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llama.cpp/ggml-cuda.cu

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#include "ggml-cuda.h"
#include "ggml.h"
#include "ggml-backend-impl.h"
#include "ggml-cuda/common.cuh"
#include "ggml-cuda/acc.cuh"
#include "ggml-cuda/alibi.cuh"
#include "ggml-cuda/arange.cuh"
#include "ggml-cuda/argsort.cuh"
#include "ggml-cuda/binbcast.cuh"
#include "ggml-cuda/clamp.cuh"
#include "ggml-cuda/concat.cuh"
#include "ggml-cuda/convert.cuh"
#include "ggml-cuda/cpy.cuh"
#include "ggml-cuda/diagmask.cuh"
#include "ggml-cuda/dmmv.cuh"
#include "ggml-cuda/getrows.cuh"
#include "ggml-cuda/im2col.cuh"
#include "ggml-cuda/mmq.cuh"
#include "ggml-cuda/mmvq.cuh"
#include "ggml-cuda/norm.cuh"
#include "ggml-cuda/pad.cuh"
#include "ggml-cuda/pool2d.cuh"
#include "ggml-cuda/quantize.cuh"
#include "ggml-cuda/rope.cuh"
#include "ggml-cuda/scale.cuh"
#include "ggml-cuda/softmax.cuh"
#include "ggml-cuda/sumrows.cuh"
#include "ggml-cuda/tsembd.cuh"
#include "ggml-cuda/unary.cuh"
#include "ggml-cuda/upscale.cuh"
#include <algorithm>
#include <array>
#include <atomic>
#include <cinttypes>
#include <cstddef>
#include <cstdint>
#include <float.h>
#include <limits>
#include <map>
#include <memory>
#include <mutex>
#include <stdint.h>
#include <stdio.h>
#include <string>
#include <vector>
static_assert(sizeof(half) == sizeof(ggml_fp16_t), "wrong fp16 size");
[[noreturn]]
void ggml_cuda_error(const char * stmt, const char * func, const char * file, int line, const char * msg) {
int id = -1; // in case cudaGetDevice fails
cudaGetDevice(&id);
fprintf(stderr, "CUDA error: %s\n", msg);
fprintf(stderr, " current device: %d, in function %s at %s:%d\n", id, func, file, line);
fprintf(stderr, " %s\n", stmt);
// abort with GGML_ASSERT to get a stack trace
GGML_ASSERT(!"CUDA error");
}
// this is faster on Windows
// probably because the Windows CUDA libraries forget to make this check before invoking the drivers
void ggml_cuda_set_device(int device) {
int current_device;
CUDA_CHECK(cudaGetDevice(&current_device));
if (device == current_device) {
return;
}
CUDA_CHECK(cudaSetDevice(device));
}
int ggml_cuda_get_device() {
int id;
CUDA_CHECK(cudaGetDevice(&id));
return id;
}
static ggml_cuda_device_info ggml_cuda_init() {
#ifdef __HIP_PLATFORM_AMD__
// Workaround for a rocBLAS bug when using multiple graphics cards:
// https://github.com/ROCmSoftwarePlatform/rocBLAS/issues/1346
rocblas_initialize();
CUDA_CHECK(cudaDeviceSynchronize());
#endif
ggml_cuda_device_info info = {};
cudaError_t err = cudaGetDeviceCount(&info.device_count);
if (err != cudaSuccess) {
fprintf(stderr, "%s: failed to initialize " GGML_CUDA_NAME ": %s\n", __func__, cudaGetErrorString(err));
return info;
}
GGML_ASSERT(info.device_count <= GGML_CUDA_MAX_DEVICES);
int64_t total_vram = 0;
#if defined(GGML_CUDA_FORCE_MMQ)
fprintf(stderr, "%s: GGML_CUDA_FORCE_MMQ: yes\n", __func__);
#else
fprintf(stderr, "%s: GGML_CUDA_FORCE_MMQ: no\n", __func__);
#endif
#if defined(CUDA_USE_TENSOR_CORES)
fprintf(stderr, "%s: CUDA_USE_TENSOR_CORES: yes\n", __func__);
#else
fprintf(stderr, "%s: CUDA_USE_TENSOR_CORES: no\n", __func__);
#endif
fprintf(stderr, "%s: found %d " GGML_CUDA_NAME " devices:\n", __func__, info.device_count);
for (int id = 0; id < info.device_count; ++id) {
int device_vmm = 0;
#if !defined(GGML_USE_HIPBLAS)
CUdevice device;
CU_CHECK(cuDeviceGet(&device, id));
CU_CHECK(cuDeviceGetAttribute(&device_vmm, CU_DEVICE_ATTRIBUTE_VIRTUAL_MEMORY_MANAGEMENT_SUPPORTED, device));
if (device_vmm) {
CUmemAllocationProp alloc_prop = {};
alloc_prop.type = CU_MEM_ALLOCATION_TYPE_PINNED;
alloc_prop.location.type = CU_MEM_LOCATION_TYPE_DEVICE;
alloc_prop.location.id = id;
CU_CHECK(cuMemGetAllocationGranularity(&info.devices[id].vmm_granularity, &alloc_prop, CU_MEM_ALLOC_GRANULARITY_RECOMMENDED));
}
#endif // !defined(GGML_USE_HIPBLAS)
info.devices[id].vmm = !!device_vmm;
cudaDeviceProp prop;
CUDA_CHECK(cudaGetDeviceProperties(&prop, id));
fprintf(stderr, " Device %d: %s, compute capability %d.%d, VMM: %s\n", id, prop.name, prop.major, prop.minor, device_vmm ? "yes" : "no");
info.default_tensor_split[id] = total_vram;
total_vram += prop.totalGlobalMem;
#if defined(GGML_USE_HIPBLAS) && defined(__HIP_PLATFORM_AMD__)
info.devices[id].cc = 100*prop.major + 10*prop.minor + CC_OFFSET_AMD;
#else
info.devices[id].cc = 100*prop.major + 10*prop.minor;
#endif // defined(GGML_USE_HIPBLAS) && defined(__HIP_PLATFORM_AMD__)
info.devices[id].smpb = prop.sharedMemPerBlock;
}
for (int id = 0; id < info.device_count; ++id) {
info.default_tensor_split[id] /= total_vram;
}
// configure logging to stdout
// CUBLAS_CHECK(cublasLoggerConfigure(1, 1, 0, nullptr));
return info;
}
const ggml_cuda_device_info & ggml_cuda_info() {
static ggml_cuda_device_info info = ggml_cuda_init();
return info;
}
// #define DEBUG_CUDA_MALLOC
// buffer pool for cuda (legacy)
struct ggml_cuda_pool_leg : public ggml_cuda_pool {
static const int MAX_BUFFERS = 256;
int device;
struct ggml_cuda_buffer {
void * ptr = nullptr;
size_t size = 0;
};
ggml_cuda_buffer buffer_pool[MAX_BUFFERS] = {};
size_t pool_size = 0;
explicit ggml_cuda_pool_leg(int device) :
device(device) {
}
~ggml_cuda_pool_leg() {
ggml_cuda_set_device(device);
for (int i = 0; i < MAX_BUFFERS; ++i) {
ggml_cuda_buffer & b = buffer_pool[i];
if (b.ptr != nullptr) {
CUDA_CHECK(cudaFree(b.ptr));
pool_size -= b.size;
}
}
GGML_ASSERT(pool_size == 0);
}
void * alloc(size_t size, size_t * actual_size) override {
#ifdef DEBUG_CUDA_MALLOC
int nnz = 0;
size_t max_size = 0;
#endif
size_t best_diff = 1ull << 36;
int ibest = -1;
for (int i = 0; i < MAX_BUFFERS; ++i) {
ggml_cuda_buffer& b = buffer_pool[i];
if (b.ptr != nullptr) {
#ifdef DEBUG_CUDA_MALLOC
++nnz;
if (b.size > max_size) max_size = b.size;
#endif
if (b.size >= size) {
size_t diff = b.size - size;
if (diff < best_diff) {
best_diff = diff;
ibest = i;
if (!best_diff) {
void * ptr = b.ptr;
*actual_size = b.size;
b.ptr = nullptr;
b.size = 0;
return ptr;
}
}
}
}
}
if (ibest >= 0) {
ggml_cuda_buffer& b = buffer_pool[ibest];
void * ptr = b.ptr;
*actual_size = b.size;
b.ptr = nullptr;
b.size = 0;
return ptr;
}
void * ptr;
size_t look_ahead_size = (size_t) (1.05 * size);
look_ahead_size = 256 * ((look_ahead_size + 255)/256);
ggml_cuda_set_device(device);
CUDA_CHECK(cudaMalloc((void **) &ptr, look_ahead_size));
*actual_size = look_ahead_size;
pool_size += look_ahead_size;
#ifdef DEBUG_CUDA_MALLOC
fprintf(stderr, "%s[%d]: %d buffers, max_size = %u MB, pool_size = %u MB, requested %u MB\n", __func__, device, nnz,
(uint32_t)(max_size/1024/1024), (uint32_t)(pool_size/1024/1024), (uint32_t)(size/1024/1024));
#endif
return ptr;
}
void free(void * ptr, size_t size) override {
for (int i = 0; i < MAX_BUFFERS; ++i) {
ggml_cuda_buffer& b = buffer_pool[i];
if (b.ptr == nullptr) {
b.ptr = ptr;
b.size = size;
return;
}
}
fprintf(stderr, "WARNING: cuda buffer pool full, increase MAX_CUDA_BUFFERS\n");
ggml_cuda_set_device(device);
CUDA_CHECK(cudaFree(ptr));
pool_size -= size;
}
};
// pool with virtual memory
#if !defined(GGML_USE_HIPBLAS)
struct ggml_cuda_pool_vmm : public ggml_cuda_pool {
static const size_t CUDA_POOL_VMM_MAX_SIZE = 1ull << 35; // 32 GB
int device;
CUdeviceptr pool_addr = 0;
size_t pool_used = 0;
size_t pool_size = 0;
size_t granularity;
explicit ggml_cuda_pool_vmm(int device) :
device(device),
granularity(ggml_cuda_info().devices[device].vmm_granularity) {
}
~ggml_cuda_pool_vmm() {
if (pool_addr != 0) {
CU_CHECK(cuMemUnmap(pool_addr, pool_size));
CU_CHECK(cuMemAddressFree(pool_addr, CUDA_POOL_VMM_MAX_SIZE));
}
}
void * alloc(size_t size, size_t * actual_size) override {
// round up the allocation size to the alignment to ensure that all allocations are aligned for all data types
const size_t alignment = 128;
size = alignment * ((size + alignment - 1) / alignment);
size_t avail = pool_size - pool_used;
if (size > avail) {
// round up to the next multiple of the granularity
size_t reserve_size = size - avail;
reserve_size = granularity * ((reserve_size + granularity - 1) / granularity);
GGML_ASSERT(pool_size + reserve_size <= CUDA_POOL_VMM_MAX_SIZE);
// allocate more physical memory
CUmemAllocationProp prop = {};
prop.type = CU_MEM_ALLOCATION_TYPE_PINNED;
prop.location.type = CU_MEM_LOCATION_TYPE_DEVICE;
prop.location.id = device;
CUmemGenericAllocationHandle handle;
CU_CHECK(cuMemCreate(&handle, reserve_size, &prop, 0));
// reserve virtual address space (if not already reserved)
if (pool_addr == 0) {
CU_CHECK(cuMemAddressReserve(&pool_addr, CUDA_POOL_VMM_MAX_SIZE, 0, 0, 0));
}
// map at the end of the pool
CU_CHECK(cuMemMap(pool_addr + pool_size, reserve_size, 0, handle, 0));
// the memory allocation handle is no longer needed after mapping
CU_CHECK(cuMemRelease(handle));
// set access
CUmemAccessDesc access = {};
access.location.type = CU_MEM_LOCATION_TYPE_DEVICE;
access.location.id = device;
access.flags = CU_MEM_ACCESS_FLAGS_PROT_READWRITE;
CU_CHECK(cuMemSetAccess(pool_addr + pool_size, reserve_size, &access, 1));
// add to the pool
pool_size += reserve_size;
//printf("cuda pool[%d]: size increased to %llu MB (reserved %llu MB)\n",
// device, (unsigned long long) (pool_size/1024/1024),
// (unsigned long long) (reserve_size/1024/1024));
}
GGML_ASSERT(pool_addr != 0);
void * ptr = (void *) (pool_addr + pool_used);
*actual_size = size;
pool_used += size;
#ifdef DEBUG_CUDA_MALLOC
printf("cuda pool[%d]: allocated %llu bytes at %llx\n", device, (unsigned long long) size, ptr);
#endif
return ptr;
}
void free(void * ptr, size_t size) override {
#ifdef DEBUG_CUDA_MALLOC
printf("cuda pool[%d]: freed %llu bytes at %llx\n", device, (unsigned long long) size, ptr);
#endif
pool_used -= size;
// all deallocations must be in reverse order of the allocations
GGML_ASSERT(ptr == (void *) (pool_addr + pool_used));
}
};
#endif // !defined(GGML_USE_HIPBLAS)
std::unique_ptr<ggml_cuda_pool> ggml_backend_cuda_context::new_pool_for_device(int device) {
#if !defined(GGML_USE_HIPBLAS)
if (ggml_cuda_info().devices[device].vmm) {
return std::unique_ptr<ggml_cuda_pool>(new ggml_cuda_pool_vmm(device));
}
#endif
return std::unique_ptr<ggml_cuda_pool>(new ggml_cuda_pool_leg(device));
}
// cuda buffer
struct ggml_backend_cuda_buffer_context {
int device;
void * dev_ptr = nullptr;
std::string name;
ggml_backend_cuda_buffer_context(int device, void * dev_ptr) :
device(device), dev_ptr(dev_ptr),
name(GGML_CUDA_NAME + std::to_string(device)) {
}
~ggml_backend_cuda_buffer_context() {
CUDA_CHECK(cudaFree(dev_ptr));
}
};
GGML_CALL static const char * ggml_backend_cuda_buffer_get_name(ggml_backend_buffer_t buffer) {
ggml_backend_cuda_buffer_context * ctx = (ggml_backend_cuda_buffer_context *)buffer->context;
return ctx->name.c_str();
}
GGML_CALL static bool ggml_backend_buffer_is_cuda(ggml_backend_buffer_t buffer) {
return buffer->iface.get_name == ggml_backend_cuda_buffer_get_name;
}
GGML_CALL static void ggml_backend_cuda_buffer_free_buffer(ggml_backend_buffer_t buffer) {
ggml_backend_cuda_buffer_context * ctx = (ggml_backend_cuda_buffer_context *)buffer->context;
delete ctx;
}
GGML_CALL static void * ggml_backend_cuda_buffer_get_base(ggml_backend_buffer_t buffer) {
ggml_backend_cuda_buffer_context * ctx = (ggml_backend_cuda_buffer_context *)buffer->context;
return ctx->dev_ptr;
}
GGML_CALL static void ggml_backend_cuda_buffer_init_tensor(ggml_backend_buffer_t buffer, ggml_tensor * tensor) {
ggml_backend_cuda_buffer_context * ctx = (ggml_backend_cuda_buffer_context *)buffer->context;
if (tensor->view_src != NULL) {
assert(tensor->view_src->buffer->buft == buffer->buft);
return;
}
if (ggml_is_quantized(tensor->type)) {
// initialize padding to 0 to avoid possible NaN values
size_t original_size = ggml_nbytes(tensor);
size_t padded_size = ggml_backend_buft_get_alloc_size(buffer->buft, tensor);
if (padded_size > original_size && tensor->view_src == nullptr) {
ggml_cuda_set_device(ctx->device);
CUDA_CHECK(cudaMemset((char *)tensor->data + original_size, 0, padded_size - original_size));
}
}
}
GGML_CALL static void ggml_backend_cuda_buffer_set_tensor(ggml_backend_buffer_t buffer, ggml_tensor * tensor, const void * data, size_t offset, size_t size) {
ggml_backend_cuda_buffer_context * ctx = (ggml_backend_cuda_buffer_context *)buffer->context;
ggml_cuda_set_device(ctx->device);
CUDA_CHECK(cudaMemcpyAsync((char *)tensor->data + offset, data, size, cudaMemcpyHostToDevice, cudaStreamPerThread));
CUDA_CHECK(cudaStreamSynchronize(cudaStreamPerThread));
}
GGML_CALL static void ggml_backend_cuda_buffer_get_tensor(ggml_backend_buffer_t buffer, const ggml_tensor * tensor, void * data, size_t offset, size_t size) {
ggml_backend_cuda_buffer_context * ctx = (ggml_backend_cuda_buffer_context *)buffer->context;
ggml_cuda_set_device(ctx->device);
CUDA_CHECK(cudaMemcpyAsync(data, (const char *)tensor->data + offset, size, cudaMemcpyDeviceToHost, cudaStreamPerThread));
CUDA_CHECK(cudaStreamSynchronize(cudaStreamPerThread));
}
GGML_CALL static bool ggml_backend_cuda_buffer_cpy_tensor(ggml_backend_buffer_t buffer, const ggml_tensor * src, ggml_tensor * dst) {
if (ggml_backend_buffer_is_cuda(src->buffer)) {
ggml_backend_cuda_buffer_context * src_ctx = (ggml_backend_cuda_buffer_context *)src->buffer->context;
ggml_backend_cuda_buffer_context * dst_ctx = (ggml_backend_cuda_buffer_context *)dst->buffer->context;
if (src_ctx->device == dst_ctx->device) {
CUDA_CHECK(cudaMemcpyAsync(dst->data, src->data, ggml_nbytes(src), cudaMemcpyDeviceToDevice, cudaStreamPerThread));
} else {
#ifdef GGML_CUDA_NO_PEER_COPY
return false;
#else
CUDA_CHECK(cudaMemcpyPeerAsync(dst->data, dst_ctx->device, src->data, src_ctx->device, ggml_nbytes(src), cudaStreamPerThread));
#endif
}
CUDA_CHECK(cudaStreamSynchronize(cudaStreamPerThread));
return true;
}
return false;
GGML_UNUSED(buffer);
}
GGML_CALL static void ggml_backend_cuda_buffer_clear(ggml_backend_buffer_t buffer, uint8_t value) {
ggml_backend_cuda_buffer_context * ctx = (ggml_backend_cuda_buffer_context *)buffer->context;
ggml_cuda_set_device(ctx->device);
CUDA_CHECK(cudaDeviceSynchronize());
CUDA_CHECK(cudaMemset(ctx->dev_ptr, value, buffer->size));
CUDA_CHECK(cudaDeviceSynchronize());
}
static ggml_backend_buffer_i ggml_backend_cuda_buffer_interface = {
/* .get_name = */ ggml_backend_cuda_buffer_get_name,
/* .free_buffer = */ ggml_backend_cuda_buffer_free_buffer,
/* .get_base = */ ggml_backend_cuda_buffer_get_base,
/* .init_tensor = */ ggml_backend_cuda_buffer_init_tensor,
/* .set_tensor = */ ggml_backend_cuda_buffer_set_tensor,
/* .get_tensor = */ ggml_backend_cuda_buffer_get_tensor,
/* .cpy_tensor = */ ggml_backend_cuda_buffer_cpy_tensor,
/* .clear = */ ggml_backend_cuda_buffer_clear,
/* .reset = */ NULL,
};
// cuda buffer type
struct ggml_backend_cuda_buffer_type_context {
int device;
std::string name;
};
GGML_CALL static const char * ggml_backend_cuda_buffer_type_name(ggml_backend_buffer_type_t buft) {
ggml_backend_cuda_buffer_type_context * ctx = (ggml_backend_cuda_buffer_type_context *)buft->context;
return ctx->name.c_str();
}
GGML_CALL static ggml_backend_buffer_t ggml_backend_cuda_buffer_type_alloc_buffer(ggml_backend_buffer_type_t buft, size_t size) {
ggml_backend_cuda_buffer_type_context * buft_ctx = (ggml_backend_cuda_buffer_type_context *)buft->context;
ggml_cuda_set_device(buft_ctx->device);
size = std::max(size, (size_t)1); // cudaMalloc returns null for size 0
void * dev_ptr;
cudaError_t err = cudaMalloc(&dev_ptr, size);
if (err != cudaSuccess) {
fprintf(stderr, "%s: allocating %.2f MiB on device %d: cudaMalloc failed: %s\n", __func__, size/1024.0/1024.0, buft_ctx->device, cudaGetErrorString(err));
return nullptr;
}
ggml_backend_cuda_buffer_context * ctx = new ggml_backend_cuda_buffer_context(buft_ctx->device, dev_ptr);
return ggml_backend_buffer_init(buft, ggml_backend_cuda_buffer_interface, ctx, size);
}
GGML_CALL static size_t ggml_backend_cuda_buffer_type_get_alignment(ggml_backend_buffer_type_t buft) {
return 128;
GGML_UNUSED(buft);
}
GGML_CALL static size_t ggml_backend_cuda_buffer_type_get_alloc_size(ggml_backend_buffer_type_t buft, const ggml_tensor * tensor) {
size_t size = ggml_nbytes(tensor);
int64_t ne0 = tensor->ne[0];
if (ggml_is_quantized(tensor->type)) {
if (ne0 % MATRIX_ROW_PADDING != 0) {
size += ggml_row_size(tensor->type, MATRIX_ROW_PADDING - ne0 % MATRIX_ROW_PADDING);
}
}
return size;
GGML_UNUSED(buft);
}
GGML_CALL static bool ggml_backend_cuda_buffer_type_supports_backend(ggml_backend_buffer_type_t buft, ggml_backend_t backend) {
if (!ggml_backend_is_cuda(backend)) {
return false;
}
ggml_backend_cuda_buffer_type_context * buft_ctx = (ggml_backend_cuda_buffer_type_context *)buft->context;
ggml_backend_cuda_context * cuda_ctx = (ggml_backend_cuda_context *)backend->context;
return buft_ctx->device == cuda_ctx->device;
}
static ggml_backend_buffer_type_i ggml_backend_cuda_buffer_type_interface = {
/* .get_name = */ ggml_backend_cuda_buffer_type_name,
/* .alloc_buffer = */ ggml_backend_cuda_buffer_type_alloc_buffer,
/* .get_alignment = */ ggml_backend_cuda_buffer_type_get_alignment,
/* .get_max_size = */ NULL, // defaults to SIZE_MAX
/* .get_alloc_size = */ ggml_backend_cuda_buffer_type_get_alloc_size,
/* .supports_backend = */ ggml_backend_cuda_buffer_type_supports_backend,
/* .is_host = */ NULL,
};
GGML_CALL ggml_backend_buffer_type_t ggml_backend_cuda_buffer_type(int device) {
static std::mutex mutex;
std::lock_guard<std::mutex> lock(mutex);
if (device >= ggml_backend_cuda_get_device_count()) {
return nullptr;
}
static ggml_backend_buffer_type ggml_backend_cuda_buffer_types[GGML_CUDA_MAX_DEVICES];
static bool ggml_backend_cuda_buffer_type_initialized = false;
if (!ggml_backend_cuda_buffer_type_initialized) {
for (int i = 0; i < GGML_CUDA_MAX_DEVICES; i++) {
ggml_backend_cuda_buffer_types[i] = {
/* .iface = */ ggml_backend_cuda_buffer_type_interface,
/* .context = */ new ggml_backend_cuda_buffer_type_context{i, GGML_CUDA_NAME + std::to_string(i)},
};
}
ggml_backend_cuda_buffer_type_initialized = true;
}
return &ggml_backend_cuda_buffer_types[device];
}
// cuda split buffer
static int64_t get_row_rounding(ggml_type type, const std::array<float, GGML_CUDA_MAX_DEVICES> & tensor_split) {
int64_t min_compute_capability = INT_MAX;
int64_t max_compute_capability = INT_MIN;
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
if (tensor_split[id] < (id + 1 < ggml_backend_cuda_get_device_count() ? tensor_split[id + 1] : 1.0f)) {
if (min_compute_capability > ggml_cuda_info().devices[id].cc) {
min_compute_capability = ggml_cuda_info().devices[id].cc;
}
if (max_compute_capability < ggml_cuda_info().devices[id].cc) {
max_compute_capability = ggml_cuda_info().devices[id].cc;
}
}
}
#if defined(GGML_USE_HIPBLAS) && defined(__HIP_PLATFORM_AMD__)
switch(type) {
case GGML_TYPE_Q4_0:
case GGML_TYPE_Q4_1:
case GGML_TYPE_Q5_0:
case GGML_TYPE_Q5_1:
case GGML_TYPE_Q8_0:
return max_compute_capability >= CC_RDNA2 ? 128 : 64;
case GGML_TYPE_F16:
case GGML_TYPE_F32:
return 1;
case GGML_TYPE_Q2_K:
return max_compute_capability >= CC_RDNA2 ? 128 : 32;
case GGML_TYPE_Q3_K:
return min_compute_capability < CC_RDNA2 ? 128 : 64;
case GGML_TYPE_Q4_K:
case GGML_TYPE_Q5_K:
case GGML_TYPE_Q6_K:
case GGML_TYPE_IQ2_XXS:
case GGML_TYPE_IQ2_XS:
case GGML_TYPE_IQ2_S:
case GGML_TYPE_IQ3_XXS:
case GGML_TYPE_IQ1_S:
case GGML_TYPE_IQ1_M:
case GGML_TYPE_IQ4_NL:
case GGML_TYPE_IQ4_XS:
case GGML_TYPE_IQ3_S:
return max_compute_capability >= CC_RDNA2 ? 128 : 64;
default:
GGML_ASSERT(false);
}
#else
switch(type) {
case GGML_TYPE_Q4_0:
case GGML_TYPE_Q4_1:
return max_compute_capability >= CC_VOLTA ? 128 : 64;
case GGML_TYPE_Q5_0:
case GGML_TYPE_Q5_1:
case GGML_TYPE_Q8_0:
return 64;
case GGML_TYPE_F16:
case GGML_TYPE_F32:
return 1;
case GGML_TYPE_Q2_K:
case GGML_TYPE_Q3_K:
case GGML_TYPE_Q4_K:
case GGML_TYPE_Q5_K:
case GGML_TYPE_IQ2_XXS:
case GGML_TYPE_IQ2_XS:
case GGML_TYPE_IQ2_S:
case GGML_TYPE_IQ3_XXS:
case GGML_TYPE_IQ1_S:
case GGML_TYPE_IQ1_M:
case GGML_TYPE_IQ4_NL:
case GGML_TYPE_IQ4_XS:
case GGML_TYPE_IQ3_S:
return max_compute_capability >= CC_VOLTA ? 128 : 64;
case GGML_TYPE_Q6_K:
return 64;
default:
GGML_ASSERT(false);
}
#endif // defined(GGML_USE_HIPBLAS) && defined(__HIP_PLATFORM_AMD__)
}
static void get_row_split(int64_t * row_low, int64_t * row_high, const ggml_tensor * tensor, const std::array<float, GGML_CUDA_MAX_DEVICES> & tensor_split, int id) {
const int64_t nrows = ggml_nrows(tensor);
const int64_t rounding = get_row_rounding(tensor->type, tensor_split);
*row_low = id == 0 ? 0 : nrows*tensor_split[id];
*row_low -= *row_low % rounding;
if (id == ggml_backend_cuda_get_device_count() - 1) {
*row_high = nrows;
} else {
*row_high = nrows*tensor_split[id + 1];
*row_high -= *row_high % rounding;
}
}
static size_t ggml_nbytes_split(const struct ggml_tensor * tensor, int nrows_split) {
static_assert(GGML_MAX_DIMS == 4, "GGML_MAX_DIMS is not 4 - update this function");
return nrows_split*ggml_row_size(tensor->type, tensor->ne[0]);
}
struct ggml_backend_cuda_split_buffer_type_context {
std::array<float, GGML_CUDA_MAX_DEVICES> tensor_split;
};
struct ggml_backend_cuda_split_buffer_context {
~ggml_backend_cuda_split_buffer_context() {
for (ggml_tensor_extra_gpu * extra : tensor_extras) {
for (int id = 0; id < GGML_CUDA_MAX_DEVICES; ++id) {
for (int64_t is = 0; is < GGML_CUDA_MAX_STREAMS; ++is) {
if (extra->events[id][is] != nullptr) {
CUDA_CHECK(cudaEventDestroy(extra->events[id][is]));
}
}
if (extra->data_device[id] != nullptr) {
CUDA_CHECK(cudaFree(extra->data_device[id]));
}
}
delete extra;
}
}
std::vector<ggml_tensor_extra_gpu *> tensor_extras;
};
GGML_CALL static const char * ggml_backend_cuda_split_buffer_get_name(ggml_backend_buffer_t buffer) {
return GGML_CUDA_NAME "_Split";
GGML_UNUSED(buffer);
}
static bool ggml_backend_buffer_is_cuda_split(ggml_backend_buffer_t buffer) {
return buffer->iface.get_name == ggml_backend_cuda_split_buffer_get_name;
GGML_UNUSED(ggml_backend_buffer_is_cuda_split); // only used in debug builds currently, avoid unused function warning in release builds
}
GGML_CALL static void ggml_backend_cuda_split_buffer_free_buffer(ggml_backend_buffer_t buffer) {
ggml_backend_cuda_split_buffer_context * ctx = (ggml_backend_cuda_split_buffer_context *)buffer->context;
delete ctx;
}
GGML_CALL static void * ggml_backend_cuda_split_buffer_get_base(ggml_backend_buffer_t buffer) {
// the pointers are stored in the tensor extras, this is just a dummy address and never dereferenced
return (void *)0x1000;
GGML_UNUSED(buffer);
}
GGML_CALL static void ggml_backend_cuda_split_buffer_init_tensor(ggml_backend_buffer_t buffer, ggml_tensor * tensor) {
GGML_ASSERT(tensor->view_src == nullptr); // views of split tensors are not supported
ggml_backend_cuda_split_buffer_context * ctx = (ggml_backend_cuda_split_buffer_context *)buffer->context;
ggml_backend_cuda_split_buffer_type_context * buft_ctx = (ggml_backend_cuda_split_buffer_type_context *)buffer->buft->context;
const int64_t ne0 = tensor->ne[0];
ggml_tensor_extra_gpu * extra = new ggml_tensor_extra_gpu{};
ctx->tensor_extras.push_back(extra);
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
int64_t row_low, row_high;
get_row_split(&row_low, &row_high, tensor, buft_ctx->tensor_split, id);
int64_t nrows_split = row_high - row_low;
if (nrows_split == 0) {
continue;
}
size_t size = ggml_nbytes_split(tensor, nrows_split);
const size_t original_size = size;
// pad last row to a multiple of 512 elements to avoid out-of-bounds memory accesses
if (ne0 % MATRIX_ROW_PADDING != 0) {
size += ggml_row_size(tensor->type, MATRIX_ROW_PADDING - ne0 % MATRIX_ROW_PADDING);
}
// FIXME: do not crash if cudaMalloc fails
// currently, init_tensor cannot fail, it needs to be fixed in ggml-backend first
ggml_cuda_set_device(id);
char * buf;
CUDA_CHECK(cudaMalloc(&buf, size));
// set padding to 0 to avoid possible NaN values
if (size > original_size) {
CUDA_CHECK(cudaMemset(buf + original_size, 0, size - original_size));
}
extra->data_device[id] = buf;
for (int64_t is = 0; is < GGML_CUDA_MAX_STREAMS; ++is) {
CUDA_CHECK(cudaEventCreateWithFlags(&extra->events[id][is], cudaEventDisableTiming));
}
}
tensor->extra = extra;
}
GGML_CALL static void ggml_backend_cuda_split_buffer_set_tensor(ggml_backend_buffer_t buffer, ggml_tensor * tensor, const void * data, size_t offset, size_t size) {
// split tensors must always be set in their entirety at once
GGML_ASSERT(offset == 0);
GGML_ASSERT(size == ggml_nbytes(tensor));
ggml_backend_cuda_split_buffer_type_context * buft_ctx = (ggml_backend_cuda_split_buffer_type_context *)buffer->buft->context;
const int64_t ne0 = tensor->ne[0];
const size_t nb1 = tensor->nb[1];
ggml_tensor_extra_gpu * extra = (ggml_tensor_extra_gpu *)tensor->extra;
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
int64_t row_low, row_high;
get_row_split(&row_low, &row_high, tensor, buft_ctx->tensor_split, id);
int64_t nrows_split = row_high - row_low;
if (nrows_split == 0) {
continue;
}
const size_t offset_split = row_low*nb1;
size_t size = ggml_nbytes_split(tensor, nrows_split);
const size_t original_size = size;
// pad last row to a multiple of 512 elements to avoid out-of-bounds memory accesses
if (ne0 % MATRIX_ROW_PADDING != 0) {
size += ggml_row_size(tensor->type, MATRIX_ROW_PADDING - ne0 % MATRIX_ROW_PADDING);
}
const char * buf_host = (const char *)data + offset_split;
CUDA_CHECK(cudaMemcpyAsync(extra->data_device[id], buf_host, original_size, cudaMemcpyHostToDevice, cudaStreamPerThread));
}
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
CUDA_CHECK(cudaStreamSynchronize(cudaStreamPerThread));
}
}
GGML_CALL static void ggml_backend_cuda_split_buffer_get_tensor(ggml_backend_buffer_t buffer, const ggml_tensor * tensor, void * data, size_t offset, size_t size) {
// split tensors must always be set in their entirety at once
GGML_ASSERT(offset == 0);
GGML_ASSERT(size == ggml_nbytes(tensor));
ggml_backend_cuda_split_buffer_type_context * buft_ctx = (ggml_backend_cuda_split_buffer_type_context *)buffer->buft->context;
const int64_t ne0 = tensor->ne[0];
const size_t nb1 = tensor->nb[1];
ggml_tensor_extra_gpu * extra = (ggml_tensor_extra_gpu *)tensor->extra;
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
int64_t row_low, row_high;
get_row_split(&row_low, &row_high, tensor, buft_ctx->tensor_split, id);
int64_t nrows_split = row_high - row_low;
if (nrows_split == 0) {
continue;
}
const size_t offset_split = row_low*nb1;
size_t size = ggml_nbytes_split(tensor, nrows_split);
const size_t original_size = size;
// pad last row to a multiple of 512 elements to avoid out-of-bounds memory accesses
if (ne0 % MATRIX_ROW_PADDING != 0) {
size += ggml_row_size(tensor->type, MATRIX_ROW_PADDING - ne0 % MATRIX_ROW_PADDING);
}
char * buf_host = (char *)data + offset_split;
CUDA_CHECK(cudaMemcpyAsync(buf_host, extra->data_device[id], original_size, cudaMemcpyDeviceToHost, cudaStreamPerThread));
}
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
CUDA_CHECK(cudaStreamSynchronize(cudaStreamPerThread));
}
}
GGML_CALL static void ggml_backend_cuda_split_buffer_clear(ggml_backend_buffer_t buffer, uint8_t value) {
GGML_UNUSED(buffer);
GGML_UNUSED(value);
}
static struct ggml_backend_buffer_i ggml_backend_cuda_split_buffer_interface = {
/* .get_name = */ ggml_backend_cuda_split_buffer_get_name,
/* .free_buffer = */ ggml_backend_cuda_split_buffer_free_buffer,
/* .get_base = */ ggml_backend_cuda_split_buffer_get_base,
/* .init_tensor = */ ggml_backend_cuda_split_buffer_init_tensor,
/* .set_tensor = */ ggml_backend_cuda_split_buffer_set_tensor,
/* .get_tensor = */ ggml_backend_cuda_split_buffer_get_tensor,
/* .cpy_tensor = */ NULL,
/* .clear = */ ggml_backend_cuda_split_buffer_clear,
/* .reset = */ NULL,
};
// cuda split buffer type
GGML_CALL static const char * ggml_backend_cuda_split_buffer_type_name(ggml_backend_buffer_type_t buft) {
return GGML_CUDA_NAME "_Split";
GGML_UNUSED(buft);
}
GGML_CALL static ggml_backend_buffer_t ggml_backend_cuda_split_buffer_type_alloc_buffer(ggml_backend_buffer_type_t buft, size_t size) {
// since we don't know the exact split after rounding, we cannot allocate the device buffers at this point
// instead, we allocate them for each tensor separately in init_tensor
// however, the size still represents the maximum cumulative size of all the device buffers after the tensors are allocated,
// as returned by get_alloc_size. this limit is enforced during tensor allocation by ggml-alloc, so it must be correct.
ggml_backend_cuda_split_buffer_context * ctx = new ggml_backend_cuda_split_buffer_context();
return ggml_backend_buffer_init(buft, ggml_backend_cuda_split_buffer_interface, ctx, size);
}
GGML_CALL static size_t ggml_backend_cuda_split_buffer_type_get_alignment(ggml_backend_buffer_type_t buft) {
return 128;
GGML_UNUSED(buft);
}
GGML_CALL static size_t ggml_backend_cuda_split_buffer_type_get_alloc_size(ggml_backend_buffer_type_t buft, const ggml_tensor * tensor) {
ggml_backend_cuda_split_buffer_type_context * ctx = (ggml_backend_cuda_split_buffer_type_context *)buft->context;
size_t total_size = 0;
const int64_t ne0 = tensor->ne[0];
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
int64_t row_low, row_high;
get_row_split(&row_low, &row_high, tensor, ctx->tensor_split, id);
int64_t nrows_split = row_high - row_low;
if (nrows_split == 0) {
continue;
}
total_size += ggml_nbytes_split(tensor, nrows_split);
// pad last row to a multiple of 512 elements to avoid out-of-bounds memory accesses
if (ne0 % MATRIX_ROW_PADDING != 0) {
total_size += ggml_row_size(tensor->type, MATRIX_ROW_PADDING - ne0 % MATRIX_ROW_PADDING);
}
}
return total_size;
}
GGML_CALL static bool ggml_backend_cuda_split_buffer_type_supports_backend(ggml_backend_buffer_type_t buft, ggml_backend_t backend) {
return ggml_backend_is_cuda(backend);
GGML_UNUSED(buft);
}
GGML_CALL static bool ggml_backend_cuda_split_buffer_type_is_host(ggml_backend_buffer_type_t buft) {
return false;
GGML_UNUSED(buft);
}
static ggml_backend_buffer_type_i ggml_backend_cuda_split_buffer_type_interface = {
/* .get_name = */ ggml_backend_cuda_split_buffer_type_name,
/* .alloc_buffer = */ ggml_backend_cuda_split_buffer_type_alloc_buffer,
/* .get_alignment = */ ggml_backend_cuda_split_buffer_type_get_alignment,
/* .get_max_size = */ NULL, // defaults to SIZE_MAX
/* .get_alloc_size = */ ggml_backend_cuda_split_buffer_type_get_alloc_size,
/* .supports_backend = */ ggml_backend_cuda_split_buffer_type_supports_backend,
/* .is_host = */ ggml_backend_cuda_split_buffer_type_is_host,
};
GGML_CALL ggml_backend_buffer_type_t ggml_backend_cuda_split_buffer_type(const float * tensor_split) {
static std::mutex mutex;
std::lock_guard<std::mutex> lock(mutex);
static std::map<std::array<float, GGML_CUDA_MAX_DEVICES>, struct ggml_backend_buffer_type> buft_map;
std::array<float, GGML_CUDA_MAX_DEVICES> tensor_split_arr = {};
bool all_zero = tensor_split == nullptr || std::all_of(tensor_split, tensor_split + GGML_CUDA_MAX_DEVICES, [](float x) { return x == 0.0f; });
if (all_zero) {
tensor_split_arr = ggml_cuda_info().default_tensor_split;
} else {
float split_sum = 0.0f;
for (int i = 0; i < ggml_backend_cuda_get_device_count(); ++i) {
tensor_split_arr[i] = split_sum;
split_sum += tensor_split[i];
}
for (int i = 0; i < ggml_backend_cuda_get_device_count(); ++i) {
tensor_split_arr[i] /= split_sum;
}
}
auto it = buft_map.find(tensor_split_arr);
if (it != buft_map.end()) {
return &it->second;
}
struct ggml_backend_buffer_type buft {
/* .iface = */ ggml_backend_cuda_split_buffer_type_interface,
/* .context = */ new ggml_backend_cuda_split_buffer_type_context{tensor_split_arr},
};
auto result = buft_map.emplace(tensor_split_arr, buft);
return &result.first->second;
}
// host buffer type
GGML_CALL static const char * ggml_backend_cuda_host_buffer_type_name(ggml_backend_buffer_type_t buft) {
return GGML_CUDA_NAME "_Host";
GGML_UNUSED(buft);
}
GGML_CALL static const char * ggml_backend_cuda_host_buffer_name(ggml_backend_buffer_t buffer) {
return GGML_CUDA_NAME "_Host";
GGML_UNUSED(buffer);
}
GGML_CALL static void ggml_backend_cuda_host_buffer_free_buffer(ggml_backend_buffer_t buffer) {
CUDA_CHECK(cudaFreeHost(buffer->context));
}
static void * ggml_cuda_host_malloc(size_t size) {
if (getenv("GGML_CUDA_NO_PINNED") != nullptr) {
return nullptr;
}
void * ptr = nullptr;
cudaError_t err = cudaMallocHost((void **) &ptr, size);
if (err != cudaSuccess) {
// clear the error
cudaGetLastError();
fprintf(stderr, "%s: warning: failed to allocate %.2f MiB of pinned memory: %s\n", __func__,
size/1024.0/1024.0, cudaGetErrorString(err));
return nullptr;
}
return ptr;
}
GGML_CALL static ggml_backend_buffer_t ggml_backend_cuda_host_buffer_type_alloc_buffer(ggml_backend_buffer_type_t buft, size_t size) {
void * ptr = ggml_cuda_host_malloc(size);
if (ptr == nullptr) {
// fallback to cpu buffer
return ggml_backend_buft_alloc_buffer(ggml_backend_cpu_buffer_type(), size);
}
ggml_backend_buffer_t buffer = ggml_backend_cpu_buffer_from_ptr(ptr, size);
buffer->buft = buft;
buffer->iface.get_name = ggml_backend_cuda_host_buffer_name;
buffer->iface.free_buffer = ggml_backend_cuda_host_buffer_free_buffer;
return buffer;
}
GGML_CALL ggml_backend_buffer_type_t ggml_backend_cuda_host_buffer_type() {
static struct ggml_backend_buffer_type ggml_backend_cuda_buffer_type_host = {
/* .iface = */ {
/* .get_name = */ ggml_backend_cuda_host_buffer_type_name,
/* .alloc_buffer = */ ggml_backend_cuda_host_buffer_type_alloc_buffer,
/* .get_alignment = */ ggml_backend_cpu_buffer_type()->iface.get_alignment,
/* .get_max_size = */ NULL, // defaults to SIZE_MAX
/* .get_alloc_size = */ ggml_backend_cpu_buffer_type()->iface.get_alloc_size,
/* .supports_backend = */ ggml_backend_cpu_buffer_type()->iface.supports_backend,
/* .is_host = */ ggml_backend_cpu_buffer_type()->iface.is_host,
},
/* .context = */ nullptr,
};
return &ggml_backend_cuda_buffer_type_host;
}
//static bool ggml_backend_buffer_is_cuda_host(ggml_backend_buffer_t buffer) {
// return buffer->buft->iface.get_name == ggml_backend_cuda_host_buffer_type_name;
//}
/// kernels
typedef void (*ggml_cuda_op_mul_mat_t)(
ggml_backend_cuda_context & ctx,
const ggml_tensor * src0, const ggml_tensor * src1, ggml_tensor * dst, const char * src0_dd_i, const float * src1_ddf_i,
const char * src1_ddq_i, float * dst_dd_i, const int64_t row_low, const int64_t row_high, const int64_t src1_ncols,
const int64_t src1_padded_row_size, cudaStream_t stream);
#ifndef GGML_CUDA_PEER_MAX_BATCH_SIZE
#define GGML_CUDA_PEER_MAX_BATCH_SIZE 128
#endif // GGML_CUDA_PEER_MAX_BATCH_SIZE
#define MUL_MAT_SRC1_COL_STRIDE 128
static __global__ void mul_mat_p021_f16_f32(
const void * __restrict__ vx, const float * __restrict__ y, float * __restrict__ dst,
const int ncols_x, const int nrows_x, const int nchannels_x, const int nchannels_y) {
const half * x = (const half *) vx;
const int row_x = blockDim.y*blockIdx.y + threadIdx.y;
const int channel = blockDim.z*blockIdx.z + threadIdx.z;
const int channel_x = channel / (nchannels_y / nchannels_x);
const int nrows_y = ncols_x;
const int nrows_dst = nrows_x;
const int row_dst = row_x;
float tmp = 0.0f;
for (int col_x0 = 0; col_x0 < ncols_x; col_x0 += blockDim.x) {
const int col_x = col_x0 + threadIdx.x;
if (col_x >= ncols_x) {
break;
}
// x is transposed and permuted
const int ix = row_x*nchannels_x*ncols_x + channel_x*ncols_x + col_x;
const float xi = __half2float(x[ix]);
const int row_y = col_x;
// y is not transposed but permuted
const int iy = channel*nrows_y + row_y;
tmp += xi * y[iy];
}
// dst is not transposed and not permuted
const int idst = channel*nrows_dst + row_dst;
// sum up partial sums and write back result
tmp = warp_reduce_sum(tmp);
if (threadIdx.x == 0) {
dst[idst] = tmp;
}
}
static __global__ void mul_mat_vec_nc_f16_f32( // nc == non-contiguous
const void * __restrict__ vx, const float * __restrict__ y, float * __restrict__ dst, const int ncols_x, const int nrows_x,
const int row_stride_x, const int channel_stride_x, const int channel_x_divisor) {
const half * x = (const half *) vx;
const int row_x = blockDim.y*blockIdx.y + threadIdx.y;
const int channel = blockDim.z*blockIdx.z + threadIdx.z;
const int channel_x = channel / channel_x_divisor;
const int nrows_y = ncols_x;
const int nrows_dst = nrows_x;
const int row_dst = row_x;
const int idst = channel*nrows_dst + row_dst;
float tmp = 0.0f;
for (int col_x0 = 0; col_x0 < ncols_x; col_x0 += blockDim.x) {
const int col_x = col_x0 + threadIdx.x;
if (col_x >= ncols_x) {
break;
}
const int row_y = col_x;
const int ix = channel_x*channel_stride_x + row_x*row_stride_x + col_x;
const int iy = channel*nrows_y + row_y;
const float xi = __half2float(x[ix]);
tmp += xi * y[iy];
}
// sum up partial sums and write back result
tmp = warp_reduce_sum(tmp);
if (threadIdx.x == 0) {
dst[idst] = tmp;
}
}
static void ggml_mul_mat_p021_f16_f32_cuda(
const void * vx, const float * y, float * dst, const int ncols_x, const int nrows_x,
const int nchannels_x, const int nchannels_y, cudaStream_t stream) {
const dim3 block_nums(1, nrows_x, nchannels_y);
const dim3 block_dims(WARP_SIZE, 1, 1);
mul_mat_p021_f16_f32<<<block_nums, block_dims, 0, stream>>>(vx, y, dst, ncols_x, nrows_x, nchannels_x, nchannels_y);
}
static void ggml_mul_mat_vec_nc_f16_f32_cuda(
const void * vx, const float * y, float * dst, const int ncols_x, const int nrows_x, const int row_stride_x,
const int nchannels_x, const int nchannels_y, const int channel_stride_x, cudaStream_t stream) {
const dim3 block_nums(1, nrows_x, nchannels_y);
const dim3 block_dims(WARP_SIZE, 1, 1);
mul_mat_vec_nc_f16_f32<<<block_nums, block_dims, 0, stream>>>
(vx, y, dst, ncols_x, nrows_x, row_stride_x, channel_stride_x, nchannels_y/nchannels_x);
}
static cudaError_t ggml_cuda_cpy_tensor_2d(
void * dst, const struct ggml_tensor * src, int64_t i3, int64_t i2, int64_t i1_low, int64_t i1_high, cudaStream_t stream) {
GGML_ASSERT(ggml_backend_buffer_is_cuda(src->buffer));
char * src_ptr = (char *) src->data;
char * dst_ptr = (char *) dst;
const int64_t ne0 = src->ne[0];
const int64_t nb0 = src->nb[0];
const int64_t nb1 = src->nb[1];
const int64_t nb2 = src->nb[2];
const int64_t nb3 = src->nb[3];
const enum ggml_type type = src->type;
const int64_t ts = ggml_type_size(type);
const int64_t bs = ggml_blck_size(type);
int64_t i1_diff = i1_high - i1_low;
const char * x = src_ptr + i1_low*nb1 + i2*nb2 + i3*nb3;
if (nb0 == ts && nb1 == ts*ne0/bs) {
return cudaMemcpyAsync(dst_ptr, x, i1_diff*nb1, cudaMemcpyDeviceToDevice, stream);
} else if (nb0 == ts) {
return cudaMemcpy2DAsync(dst_ptr, ts*ne0/bs, x, nb1, ts*ne0/bs, i1_diff, cudaMemcpyDeviceToDevice, stream);
} else {
for (int64_t i1 = 0; i1 < i1_diff; i1++) {
const void * rx = (const void *) ((const char *) x + i1*nb1);
void * rd = (void *) (dst_ptr + i1*ts*ne0/bs);
// pretend the row is a matrix with cols=1
cudaError_t r = cudaMemcpy2DAsync(rd, ts/bs, rx, nb0, ts/bs, ne0, cudaMemcpyDeviceToDevice, stream);
if (r != cudaSuccess) {
return r;
}
}
return cudaSuccess;
}
}
static void ggml_cuda_op_mul_mat_cublas(
ggml_backend_cuda_context & ctx,
const ggml_tensor * src0, const ggml_tensor * src1, ggml_tensor * dst, const char * src0_dd_i, const float * src1_ddf_i,
const char * src1_ddq_i, float * dst_dd_i, const int64_t row_low, const int64_t row_high, const int64_t src1_ncols,
const int64_t src1_padded_row_size, cudaStream_t stream) {
GGML_ASSERT(src0_dd_i != nullptr);
GGML_ASSERT(src1_ddf_i != nullptr);
GGML_ASSERT(dst_dd_i != nullptr);
const int64_t ne00 = src0->ne[0];
const int64_t ne10 = src1->ne[0];
const int64_t ne0 = dst->ne[0];
const int64_t row_diff = row_high - row_low;
int id = ggml_cuda_get_device();
// the main device has a larger memory buffer to hold the results from all GPUs
// ldc == nrows of the matrix that cuBLAS writes into
int64_t ldc = id == ctx.device ? ne0 : row_diff;
const int compute_capability = ggml_cuda_info().devices[id].cc;
if (compute_capability >= CC_VOLTA && (src0->type == GGML_TYPE_F16 || ggml_is_quantized(src0->type)) && ggml_is_contiguous(src0) && row_diff == src0->ne[1] && dst->op_params[0] == GGML_PREC_DEFAULT) {
// convert src0 and src1 to fp16, multiply as fp16, convert dst to fp32
ggml_cuda_pool_alloc<half> src0_as_f16(ctx.pool(id));
if (src0->type != GGML_TYPE_F16) {
const to_fp16_cuda_t to_fp16_cuda = ggml_get_to_fp16_cuda(src0->type);
GGML_ASSERT(to_fp16_cuda != nullptr);
size_t ne = row_diff*ne00;
src0_as_f16.alloc(ne);
to_fp16_cuda(src0_dd_i, src0_as_f16.get(), ne, stream);
}
const half * src0_ptr = src0->type == GGML_TYPE_F16 ? (const half *) src0_dd_i : src0_as_f16.get();
ggml_cuda_pool_alloc<half> src1_as_f16(ctx.pool(id));
if (src1->type != GGML_TYPE_F16) {
const to_fp16_cuda_t to_fp16_cuda = ggml_get_to_fp16_cuda(src1->type);
GGML_ASSERT(to_fp16_cuda != nullptr);
size_t ne = src1_ncols*ne10;
src1_as_f16.alloc(ne);
to_fp16_cuda(src1_ddf_i, src1_as_f16.get(), ne, stream);
}
const half * src1_ptr = src1->type == GGML_TYPE_F16 ? (const half *) src1_ddf_i : src1_as_f16.get();
ggml_cuda_pool_alloc<half> dst_f16(ctx.pool(id), row_diff*src1_ncols);
const half alpha_f16 = 1.0f;
const half beta_f16 = 0.0f;
CUBLAS_CHECK(cublasSetStream(ctx.cublas_handle(id), stream));
CUBLAS_CHECK(
cublasGemmEx(ctx.cublas_handle(id), CUBLAS_OP_T, CUBLAS_OP_N,
row_diff, src1_ncols, ne10,
&alpha_f16, src0_ptr, CUDA_R_16F, ne00,
src1_ptr, CUDA_R_16F, ne10,
&beta_f16, dst_f16.get(), CUDA_R_16F, ldc,
CUBLAS_COMPUTE_16F,
CUBLAS_GEMM_DEFAULT_TENSOR_OP));
const to_fp32_cuda_t to_fp32_cuda = ggml_get_to_fp32_cuda(GGML_TYPE_F16);
to_fp32_cuda(dst_f16.get(), dst_dd_i, row_diff*src1_ncols, stream);
} else {
ggml_cuda_pool_alloc<float> src0_ddq_as_f32(ctx.pool(id));
ggml_cuda_pool_alloc<float> src1_ddq_as_f32(ctx.pool(id));
if (src0->type != GGML_TYPE_F32) {
const to_fp32_cuda_t to_fp32_cuda = ggml_get_to_fp32_cuda(src0->type);
GGML_ASSERT(to_fp32_cuda != nullptr);
src0_ddq_as_f32.alloc(row_diff*ne00);
to_fp32_cuda(src0_dd_i, src0_ddq_as_f32.get(), row_diff*ne00, stream);
}
if (src1->type != GGML_TYPE_F32) {
const to_fp32_cuda_t to_fp32_cuda = ggml_get_to_fp32_cuda(src1->type);
GGML_ASSERT(to_fp32_cuda != nullptr);
src1_ddq_as_f32.alloc(src1_ncols*ne10);
to_fp32_cuda(src1_ddf_i, src1_ddq_as_f32.get(), src1_ncols*ne10, stream);
}
const float * src0_ddf_i = src0->type == GGML_TYPE_F32 ? (const float *) src0_dd_i : src0_ddq_as_f32.get();
const float * src1_ddf1_i = src1->type == GGML_TYPE_F32 ? (const float *) src1_ddf_i : src1_ddq_as_f32.get();
const float alpha = 1.0f;
const float beta = 0.0f;
CUBLAS_CHECK(cublasSetStream(ctx.cublas_handle(id), stream));
CUBLAS_CHECK(
cublasSgemm(ctx.cublas_handle(id), CUBLAS_OP_T, CUBLAS_OP_N,
row_diff, src1_ncols, ne10,
&alpha, src0_ddf_i, ne00,
src1_ddf1_i, ne10,
&beta, dst_dd_i, ldc));
}
GGML_UNUSED(dst);
GGML_UNUSED(src1_ddq_i);
GGML_UNUSED(src1_padded_row_size);
}
static void ggml_cuda_set_peer_access(const int n_tokens, int main_device) {
static bool peer_access_enabled = false;
const bool enable_peer_access = n_tokens <= GGML_CUDA_PEER_MAX_BATCH_SIZE;
if (peer_access_enabled == enable_peer_access) {
return;
}
#ifdef NDEBUG
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
ggml_cuda_set_device(id);
CUDA_CHECK(cudaDeviceSynchronize());
}
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
ggml_cuda_set_device(id);
for (int id_other = 0; id_other < ggml_backend_cuda_get_device_count(); ++id_other) {
if (id == id_other) {
continue;
}
if (id != main_device && id_other != main_device) {
continue;
}
int can_access_peer;
CUDA_CHECK(cudaDeviceCanAccessPeer(&can_access_peer, id, id_other));
if (can_access_peer) {
if (enable_peer_access) {
cudaError_t err = cudaDeviceEnablePeerAccess(id_other, 0);
if (err != cudaErrorPeerAccessAlreadyEnabled) {
CUDA_CHECK(err);
}
} else {
cudaError_t err = cudaDeviceDisablePeerAccess(id_other);
if (err != cudaErrorPeerAccessNotEnabled) {
CUDA_CHECK(err);
}
}
}
}
}
ggml_cuda_set_device(main_device);
#endif // NDEBUG
peer_access_enabled = enable_peer_access;
GGML_UNUSED(main_device);
}
static void ggml_cuda_op_mul_mat(
ggml_backend_cuda_context & ctx,
const ggml_tensor * src0, const ggml_tensor * src1, ggml_tensor * dst, ggml_cuda_op_mul_mat_t op,
const bool convert_src1_to_q8_1) {
const int64_t ne00 = src0->ne[0];
const int64_t ne01 = src0->ne[1];
const int64_t ne02 = src0->ne[2];
const int64_t ne03 = src0->ne[3];
const int64_t ne10 = src1->ne[0];
const int64_t ne11 = src1->ne[1];
const int64_t ne12 = src1->ne[2];
const int64_t ne13 = src1->ne[3];
const int64_t nrows1 = ggml_nrows(src1);
GGML_ASSERT(ne03 == ne13);
const int64_t ne0 = dst->ne[0];
const int64_t ne1 = dst->ne[1];
const int64_t nb2 = dst->nb[2];
const int64_t nb3 = dst->nb[3];
GGML_ASSERT(ggml_backend_buffer_is_cuda(dst->buffer));
GGML_ASSERT(ggml_backend_buffer_is_cuda(src1->buffer));
ggml_backend_cuda_buffer_context * src1_ctx = (ggml_backend_cuda_buffer_context *) src1->buffer->context;
ggml_backend_cuda_buffer_context * dst_ctx = (ggml_backend_cuda_buffer_context *) dst->buffer->context;
GGML_ASSERT(src1->type == GGML_TYPE_F32 || (src1->ne[2] == 1 && src1->ne[3] == 1));
GGML_ASSERT(ne12 >= ne02 && ne12 % ne02 == 0);
const int64_t i02_divisor = ne12 / ne02;
const size_t src0_ts = ggml_type_size(src0->type);
const size_t src0_bs = ggml_blck_size(src0->type);
const size_t q8_1_ts = sizeof(block_q8_1);
const size_t q8_1_bs = QK8_1;
const bool src0_is_contiguous = ggml_is_contiguous(src0);
const bool src1_is_contiguous = ggml_is_contiguous(src1);
const int64_t src1_padded_col_size = GGML_PAD(ne10, MATRIX_ROW_PADDING);
const bool split = ggml_backend_buffer_is_cuda_split(src0->buffer);
GGML_ASSERT(!(split && ne02 > 1));
GGML_ASSERT(!(split && ne03 > 1));
GGML_ASSERT(!(split && ne02 < ne12));
ggml_tensor_extra_gpu * src0_extra = split ? (ggml_tensor_extra_gpu *) src0->extra : nullptr;
std::array<float, GGML_CUDA_MAX_DEVICES> tensor_split;
if (split) {
ggml_backend_cuda_split_buffer_type_context * buft_ctx = (ggml_backend_cuda_split_buffer_type_context *) src0->buffer->buft->context;
tensor_split = buft_ctx->tensor_split;
}
struct dev_data {
ggml_cuda_pool_alloc<char> src0_dd_alloc;
ggml_cuda_pool_alloc<float> src1_ddf_alloc;
ggml_cuda_pool_alloc<char> src1_ddq_alloc;
ggml_cuda_pool_alloc<float> dst_dd_alloc;
char * src0_dd = nullptr;
float * src1_ddf = nullptr; // float
char * src1_ddq = nullptr; // q8_1
float * dst_dd = nullptr;
int64_t row_low;
int64_t row_high;
};
dev_data dev[GGML_CUDA_MAX_DEVICES];
int used_devices = 0;
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
// by default, use all rows
dev[id].row_low = 0;
dev[id].row_high = ne01;
// for multi GPU, get the row boundaries from tensor split
// and round to mul_mat_q tile sizes
if (split) {
const int64_t rounding = get_row_rounding(src0->type, tensor_split);
if (id != 0) {
dev[id].row_low = ne01*tensor_split[id];
if (dev[id].row_low < ne01) {
dev[id].row_low -= dev[id].row_low % rounding;
}
}
if (id != ggml_backend_cuda_get_device_count() - 1) {
dev[id].row_high = ne01*tensor_split[id + 1];
if (dev[id].row_high < ne01) {
dev[id].row_high -= dev[id].row_high % rounding;
}
}
}
}
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
if ((!split && id != ctx.device) || dev[id].row_low == dev[id].row_high) {
continue;
}
used_devices++;
const bool src1_on_device = id == src1_ctx->device;
const bool dst_on_device = id == dst_ctx->device;
ggml_cuda_set_device(id);
cudaStream_t stream = ctx.stream(id, 0);
if (src0_is_contiguous) {
dev[id].src0_dd = split ? (char *) src0_extra->data_device[id] : (char *) src0->data;
} else {
dev[id].src0_dd = dev[id].src0_dd_alloc.alloc(ctx.pool(id), ggml_nbytes(src0));
}
if (src1_on_device && src1_is_contiguous) {
dev[id].src1_ddf = (float *) src1->data;
} else {
dev[id].src1_ddf = dev[id].src1_ddf_alloc.alloc(ctx.pool(id), ggml_nelements(src1));
}
if (convert_src1_to_q8_1) {
dev[id].src1_ddq = dev[id].src1_ddq_alloc.alloc(ctx.pool(id), nrows1*src1_padded_col_size*q8_1_ts/q8_1_bs);
if (src1_on_device && src1_is_contiguous) {
quantize_row_q8_1_cuda(dev[id].src1_ddf, dev[id].src1_ddq, ne10, nrows1, src1_padded_col_size, stream);
CUDA_CHECK(cudaGetLastError());
}
}
if (dst_on_device) {
dev[id].dst_dd = (float *) dst->data;
} else {
const size_t size_dst_ddf = split ? (dev[id].row_high - dev[id].row_low)*ne1 : ggml_nelements(dst);
dev[id].dst_dd = dev[id].dst_dd_alloc.alloc(ctx.pool(id), size_dst_ddf);
}
}
// if multiple devices are used they need to wait for the main device
// here an event is recorded that signals that the main device has finished calculating the input data
if (split && used_devices > 1) {
ggml_cuda_set_device(ctx.device);
CUDA_CHECK(cudaEventRecord(src0_extra->events[ctx.device][0], ctx.stream()));
}
const int64_t src1_col_stride = split && used_devices > 1 ? MUL_MAT_SRC1_COL_STRIDE : ne11;
for (int64_t src1_col_0 = 0; src1_col_0 < ne11; src1_col_0 += src1_col_stride) {
const int64_t is = split ? (src1_col_0/src1_col_stride) % GGML_CUDA_MAX_STREAMS : 0;
const int64_t src1_ncols = src1_col_0 + src1_col_stride > ne11 ? ne11 - src1_col_0 : src1_col_stride;
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
if ((!split && id != ctx.device) || dev[id].row_low == dev[id].row_high) {
continue;
}
const bool src1_on_device = id == src1_ctx->device;
const bool dst_on_device = id == dst_ctx->device;
const int64_t row_diff = dev[id].row_high - dev[id].row_low;
ggml_cuda_set_device(id);
cudaStream_t stream = ctx.stream(id, is);
// wait for main GPU data if necessary
if (split && (id != ctx.device || is != 0)) {
CUDA_CHECK(cudaStreamWaitEvent(stream, src0_extra->events[ctx.device][0], 0));
}
for (int64_t i0 = 0; i0 < ne13*ne12; ++i0) {
const int64_t i03 = i0 / ne12;
const int64_t i02 = i0 % ne12;
const size_t src1_ddq_i_offset = (i0*ne11 + src1_col_0) * src1_padded_col_size*q8_1_ts/q8_1_bs;
// for split tensors the data begins at i0 == i0_offset_low
char * src0_dd_i = dev[id].src0_dd + (i0/i02_divisor) * (ne01*ne00*src0_ts)/src0_bs;
float * src1_ddf_i = dev[id].src1_ddf + (i0*ne11 + src1_col_0) * ne10;
char * src1_ddq_i = dev[id].src1_ddq + src1_ddq_i_offset;
float * dst_dd_i = dev[id].dst_dd + (i0*ne1 + src1_col_0) * (dst_on_device ? ne0 : row_diff);
// the main device memory buffer can be on VRAM scratch, with space for all partial results
// in that case an offset on dst_ddf_i is needed
if (id == ctx.device) {
dst_dd_i += dev[id].row_low; // offset is 0 if no tensor split
}
// copy src0, src1 to device if necessary
if (src1_is_contiguous) {
if (id != ctx.device) {
if (convert_src1_to_q8_1) {
char * src1_ddq_i_source = dev[ctx.device].src1_ddq + src1_ddq_i_offset;
CUDA_CHECK(cudaMemcpyPeerAsync(src1_ddq_i, id, src1_ddq_i_source, ctx.device,
src1_ncols*src1_padded_col_size*q8_1_ts/q8_1_bs, stream));
} else {
float * src1_ddf_i_source = (float *) src1->data;
src1_ddf_i_source += (i0*ne11 + src1_col_0) * ne10;
CUDA_CHECK(cudaMemcpyPeerAsync(src1_ddf_i, id, src1_ddf_i_source, ctx.device,
src1_ncols*ne10*sizeof(float), stream));
}
}
} else if (src1_on_device && !src1_is_contiguous) {
CUDA_CHECK(ggml_cuda_cpy_tensor_2d(
src1_ddf_i, src1, i03, i02, src1_col_0, src1_col_0+src1_ncols, stream));
} else {
GGML_ASSERT(false);
}
if (convert_src1_to_q8_1 && !src1_is_contiguous) {
quantize_row_q8_1_cuda(src1_ddf_i, src1_ddq_i, ne10, src1_ncols, src1_padded_col_size, stream);
CUDA_CHECK(cudaGetLastError());
}
if (src1_col_0 == 0 && !src0_is_contiguous && i02 % i02_divisor == 0) {
CUDA_CHECK(ggml_cuda_cpy_tensor_2d(src0_dd_i, src0, i03, i02/i02_divisor, dev[id].row_low, dev[id].row_high, stream));
}
// do the computation
op(ctx, src0, src1, dst, src0_dd_i, src1_ddf_i, src1_ddq_i, dst_dd_i,
dev[id].row_low, dev[id].row_high, src1_ncols, src1_padded_col_size, stream);
CUDA_CHECK(cudaGetLastError());
// copy dst to host or other device if necessary
if (!dst_on_device) {
void * dst_off_device = dst->data;
if (split) {
// src0 = weight matrix is saved as a transposed matrix for better memory layout.
// dst is NOT transposed.
// The outputs of matrix matrix multiplications can therefore NOT simply be concatenated for >1 GPU.
// Instead they need to be copied to the correct slice in ne0 = dst row index.
// If dst is a vector with ne0 == 1 then you don't have to do this but it still produces correct results.
float * dhf_dst_i = (float *) ((char *) dst_off_device + i02*nb2 + i03*nb3);
GGML_ASSERT(dst->nb[1] == ne0*sizeof(float));
dhf_dst_i += src1_col_0*ne0 + dev[id].row_low;
#if !defined(GGML_USE_HIPBLAS)
// cudaMemcpy2DAsync may fail with copies between vmm pools of different devices
cudaMemcpy3DPeerParms p = {};
p.dstDevice = ctx.device;
p.dstPtr = make_cudaPitchedPtr(dhf_dst_i, ne0*sizeof(float), row_diff, src1_ncols);
p.srcDevice = id;
p.srcPtr = make_cudaPitchedPtr(dst_dd_i, row_diff*sizeof(float), row_diff, src1_ncols);
p.extent = make_cudaExtent(row_diff*sizeof(float), src1_ncols, 1);
CUDA_CHECK(cudaMemcpy3DPeerAsync(&p, stream));
#else
// HIP does not support cudaMemcpy3DPeerAsync or vmm pools
CUDA_CHECK(cudaMemcpy2DAsync(dhf_dst_i, ne0*sizeof(float),
dst_dd_i, row_diff*sizeof(float),
row_diff*sizeof(float), src1_ncols,
cudaMemcpyDeviceToDevice, stream));
#endif
} else {
float * dhf_dst_i = (float *) ((char *) dst_off_device + i02*nb2 + i03*nb3);
GGML_ASSERT(dst->nb[1] == ne0*sizeof(float));
dhf_dst_i += src1_col_0*ne0;
CUDA_CHECK(cudaMemcpyAsync(dhf_dst_i, dst_dd_i, src1_ncols*ne0*sizeof(float), cudaMemcpyDeviceToDevice, stream));
}
}
// add event for the main device to wait on until other device is done
if (split && (id != ctx.device || is != 0)) {
CUDA_CHECK(cudaEventRecord(src0_extra->events[id][is], stream));
}
}
}
}
// main device waits for all other devices to be finished
if (split && ggml_backend_cuda_get_device_count() > 1) {
int64_t is_max = (ne11 + MUL_MAT_SRC1_COL_STRIDE - 1) / MUL_MAT_SRC1_COL_STRIDE;
is_max = is_max <= GGML_CUDA_MAX_STREAMS ? is_max : GGML_CUDA_MAX_STREAMS;
ggml_cuda_set_device(ctx.device);
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
if (dev[id].row_low == dev[id].row_high) {
continue;
}
for (int64_t is = 0; is < is_max; ++is) {
CUDA_CHECK(cudaStreamWaitEvent(ctx.stream(), src0_extra->events[id][is], 0));
}
}
}
}
static void ggml_cuda_mul_mat_vec_p021(ggml_backend_cuda_context & ctx, const ggml_tensor * src0, const ggml_tensor * src1, ggml_tensor * dst){
GGML_ASSERT(ggml_is_permuted(src0) && ggml_is_permuted(src1));
GGML_ASSERT(ggml_backend_buffer_is_cuda(src0->buffer));
GGML_ASSERT(src0->nb[0] <= src0->nb[1] && src0->nb[2] <= src0->nb[3]); // 0213 permutation
GGML_ASSERT(src1->nb[0] <= src1->nb[1] && src1->nb[2] <= src1->nb[3]); // 0213 permutation
GGML_ASSERT(src0->type == GGML_TYPE_F16);
GGML_ASSERT(src1->type == GGML_TYPE_F32);
const int64_t ne00 = src0->ne[0];
const int64_t ne01 = src0->ne[1];
const int64_t ne02 = src0->ne[2];
const int64_t ne12 = src1->ne[2];
cudaStream_t main_stream = ctx.stream();
void * src0_ddq = src0->data;
float * src1_ddf = (float *) src1->data;
float * dst_ddf = (float *) dst->data;
ggml_mul_mat_p021_f16_f32_cuda(src0_ddq, src1_ddf, dst_ddf, ne00, ne01, ne02, ne12, main_stream);
}
static void ggml_cuda_mul_mat_vec_nc(ggml_backend_cuda_context & ctx, const ggml_tensor * src0, const ggml_tensor * src1, ggml_tensor * dst){
GGML_ASSERT(!ggml_is_transposed(src0));
GGML_ASSERT(!ggml_is_transposed(src1));
GGML_ASSERT(!ggml_is_permuted(src0));
GGML_ASSERT(ggml_backend_buffer_is_cuda(src0->buffer));
GGML_ASSERT(src0->type == GGML_TYPE_F16);
GGML_ASSERT(src1->type == GGML_TYPE_F32);
const int64_t ne00 = src0->ne[0];
const int64_t ne01 = src0->ne[1];
const int64_t ne02 = src0->ne[2];
const int64_t nb01 = src0->nb[1];
const int64_t nb02 = src0->nb[2];
const int64_t ne12 = src1->ne[2];
cudaStream_t main_stream = ctx.stream();
void * src0_ddq = src0->data;
float * src1_ddf = (float *) src1->data;
float * dst_ddf = (float *) dst->data;
const int64_t row_stride_x = nb01 / sizeof(half);
const int64_t channel_stride_x = nb02 / sizeof(half);
ggml_mul_mat_vec_nc_f16_f32_cuda(src0_ddq, src1_ddf, dst_ddf, ne00, ne01, row_stride_x, ne02, ne12, channel_stride_x, main_stream);
}
static __global__ void k_compute_batched_ptrs(
const half * src0_as_f16, const half * src1_as_f16, char * dst,
const void ** ptrs_src, void ** ptrs_dst,
int64_t ne12, int64_t ne13,
int64_t ne23,
size_t nb02, size_t nb03,
size_t nb12, size_t nb13,
size_t nbd2, size_t nbd3,
int64_t r2, int64_t r3) {
int64_t i13 = blockIdx.x * blockDim.x + threadIdx.x;
int64_t i12 = blockIdx.y * blockDim.y + threadIdx.y;
if (i13 >= ne13 || i12 >= ne12) {
return;
}
int64_t i03 = i13 / r3;
int64_t i02 = i12 / r2;
ptrs_src[0*ne23 + i12 + i13*ne12] = (const char *) src0_as_f16 + i02*nb02 + i03*nb03;
ptrs_src[1*ne23 + i12 + i13*ne12] = (const char *) src1_as_f16 + i12*nb12 + i13*nb13;
ptrs_dst[0*ne23 + i12 + i13*ne12] = ( char *) dst + i12*nbd2 + i13*nbd3;
}
static void ggml_cuda_mul_mat_batched_cublas(ggml_backend_cuda_context & ctx, const ggml_tensor * src0, const ggml_tensor * src1, ggml_tensor * dst) {
GGML_ASSERT(!ggml_is_transposed(src0));
GGML_ASSERT(!ggml_is_transposed(src1));
GGML_ASSERT(ggml_backend_buffer_is_cuda(src0->buffer));
GGML_ASSERT(src0->type == GGML_TYPE_F16);
GGML_TENSOR_BINARY_OP_LOCALS
const int64_t ne_dst = ggml_nelements(dst);
cudaStream_t main_stream = ctx.stream();
CUBLAS_CHECK(cublasSetStream(ctx.cublas_handle(), main_stream));
void * src0_ddq = src0->data;
half * src0_f16 = (half *) src0_ddq;
float * src1_ddf = (float *) src1->data;
float * dst_ddf = (float *) dst->data;
// convert src1 to fp16
ggml_cuda_pool_alloc<half> src1_f16_alloc(ctx.pool());
if (src1->type != GGML_TYPE_F16) {
const to_fp16_cuda_t to_fp16_cuda = ggml_get_to_fp16_cuda(src1->type);
const int64_t ne_src1 = ggml_nelements(src1);
src1_f16_alloc.alloc(ne_src1);
GGML_ASSERT(to_fp16_cuda != nullptr);
to_fp16_cuda(src1_ddf, src1_f16_alloc.get(), ne_src1, main_stream);
}
half * src1_f16 = src1->type == GGML_TYPE_F16 ? (half *) src1_ddf : src1_f16_alloc.get();
ggml_cuda_pool_alloc<half> dst_f16(ctx.pool());
char * dst_t;
cublasComputeType_t cu_compute_type = CUBLAS_COMPUTE_16F;
cudaDataType_t cu_data_type = CUDA_R_16F;
// dst strides
size_t nbd2 = dst->nb[2];
size_t nbd3 = dst->nb[3];
const half alpha_f16 = 1.0f;
const half beta_f16 = 0.0f;
const float alpha_f32 = 1.0f;
const float beta_f32 = 0.0f;
const void * alpha = &alpha_f16;
const void * beta = &beta_f16;
if (dst->op_params[0] == GGML_PREC_DEFAULT) {
dst_t = (char *) dst_f16.alloc(ne_dst);
nbd2 /= sizeof(float) / sizeof(half);
nbd3 /= sizeof(float) / sizeof(half);
} else {
dst_t = (char *) dst_ddf;
cu_compute_type = CUBLAS_COMPUTE_32F;
cu_data_type = CUDA_R_32F;
alpha = &alpha_f32;
beta = &beta_f32;
}
GGML_ASSERT(ne12 % ne02 == 0);
GGML_ASSERT(ne13 % ne03 == 0);
// broadcast factors
const int64_t r2 = ne12/ne02;
const int64_t r3 = ne13/ne03;
#if 0
// use cublasGemmEx
{
for (int i13 = 0; i13 < ne13; ++i13) {
for (int i12 = 0; i12 < ne12; ++i12) {
int i03 = i13 / r3;
int i02 = i12 / r2;
CUBLAS_CHECK(
cublasGemmEx(g_cublas_handles[g_main_device], CUBLAS_OP_T, CUBLAS_OP_N,
ne01, ne11, ne10,
alpha, (const char *) src0_as_f16 + i02*src0->nb[2] + i03*src0->nb[3] , CUDA_R_16F, nb01/sizeof(half),
(const char *) src1_as_f16 + i12*src1->nb[2]/2 + i13*src1->nb[3]/2, CUDA_R_16F, nb11/sizeof(float),
beta, ( char *) dst_t + i12*nbd2 + i13*nbd3, cu_data_type, ne01,
cu_compute_type,
CUBLAS_GEMM_DEFAULT_TENSOR_OP));
}
}
}
#else
if (r2 == 1 && r3 == 1 && src0->nb[2]*src0->ne[2] == src0->nb[3] && src1->nb[2]*src1->ne[2] == src1->nb[3]) {
// there is no broadcast and src0, src1 are contiguous across dims 2, 3
// use cublasGemmStridedBatchedEx
CUBLAS_CHECK(
cublasGemmStridedBatchedEx(ctx.cublas_handle(), CUBLAS_OP_T, CUBLAS_OP_N,
ne01, ne11, ne10,
alpha, (const char *) src0_f16, CUDA_R_16F, nb01/nb00, nb02/nb00, // strideA
(const char *) src1_f16, CUDA_R_16F, nb11/nb10, nb12/nb10, // strideB
beta, ( char *) dst_t, cu_data_type, ne01, nb2/nb0, // strideC
ne12*ne13,
cu_compute_type,
CUBLAS_GEMM_DEFAULT_TENSOR_OP));
} else {
// use cublasGemmBatchedEx
const int ne23 = ne12*ne13;
ggml_cuda_pool_alloc<const void *> ptrs_src(ctx.pool(), 2*ne23);
ggml_cuda_pool_alloc< void *> ptrs_dst(ctx.pool(), 1*ne23);
dim3 block_dims(ne13, ne12);
k_compute_batched_ptrs<<<1, block_dims, 0, main_stream>>>(
src0_f16, src1_f16, dst_t,
ptrs_src.get(), ptrs_dst.get(),
ne12, ne13,
ne23,
nb02, nb03,
src1->type == GGML_TYPE_F16 ? nb12 : nb12/2,
src1->type == GGML_TYPE_F16 ? nb13 : nb13/2,
nbd2, nbd3,
r2, r3);
CUDA_CHECK(cudaGetLastError());
CUBLAS_CHECK(
cublasGemmBatchedEx(ctx.cublas_handle(), CUBLAS_OP_T, CUBLAS_OP_N,
ne01, ne11, ne10,
alpha, (const void **) (ptrs_src.get() + 0*ne23), CUDA_R_16F, nb01/nb00,
(const void **) (ptrs_src.get() + 1*ne23), CUDA_R_16F, nb11/nb10,
beta, ( void **) (ptrs_dst.get() + 0*ne23), cu_data_type, ne01,
ne23,
cu_compute_type,
CUBLAS_GEMM_DEFAULT_TENSOR_OP));
}
#endif
if (dst->op_params[0] == GGML_PREC_DEFAULT) {
const to_fp32_cuda_t to_fp32_cuda = ggml_get_to_fp32_cuda(GGML_TYPE_F16);
to_fp32_cuda(dst_f16.get(), dst_ddf, ne_dst, main_stream);
}
}
static void ggml_cuda_mul_mat(ggml_backend_cuda_context & ctx, const ggml_tensor * src0, const ggml_tensor * src1, ggml_tensor * dst) {
const bool split = ggml_backend_buffer_is_cuda_split(src0->buffer);
int64_t min_compute_capability = INT_MAX;
bool any_pascal_with_slow_fp16 = false;
if (split) {
ggml_backend_cuda_split_buffer_type_context * buft_ctx = (ggml_backend_cuda_split_buffer_type_context *) src0->buffer->buft->context;
auto & tensor_split = buft_ctx->tensor_split;
for (int id = 0; id < ggml_backend_cuda_get_device_count(); ++id) {
// skip devices that are not going to do any work:
if (tensor_split[id] >= (id + 1 < ggml_backend_cuda_get_device_count() ? tensor_split[id + 1] : 1.0f)) {
continue;
}
if (min_compute_capability > ggml_cuda_info().devices[id].cc) {
min_compute_capability = ggml_cuda_info().devices[id].cc;
}
if (ggml_cuda_info().devices[id].cc == 610) {
any_pascal_with_slow_fp16 = true;
}
}
} else {
min_compute_capability = ggml_cuda_info().devices[ctx.device].cc;
any_pascal_with_slow_fp16 = ggml_cuda_info().devices[ctx.device].cc == 610;
}
// check data types and tensor shapes for custom matrix multiplication kernels:
bool use_dequantize_mul_mat_vec = (ggml_is_quantized(src0->type) || src0->type == GGML_TYPE_F16)
&& src1->type == GGML_TYPE_F32 && dst->type == GGML_TYPE_F32
&& src0->ne[0] % GGML_CUDA_DMMV_X == 0 && src1->ne[1] == 1;
bool use_mul_mat_vec_q = ggml_is_quantized(src0->type)
&& src1->type == GGML_TYPE_F32 && dst->type == GGML_TYPE_F32
&& src1->ne[1] <= MMVQ_MAX_BATCH_SIZE;
bool use_mul_mat_q = ggml_cuda_supports_mmq(src0->type)
&& src1->type == GGML_TYPE_F32 && dst->type == GGML_TYPE_F32;
#if defined(GGML_USE_HIPBLAS) && defined(__HIP_PLATFORM_AMD__)
const bool fp16_performance_good = min_compute_capability >= CC_RDNA1;
#ifdef CUDA_USE_TENSOR_CORES
use_mul_mat_q = use_mul_mat_q && min_compute_capability < CC_RDNA3;
#endif // CUDA_USE_TENSOR_CORES
#else
// fp16 performance is good on Volta or newer and on P100 (compute capability 6.0)
const bool fp16_performance_good = min_compute_capability >= CC_PASCAL && !any_pascal_with_slow_fp16;
// mmvq and mmq need the __dp4a instruction which on NVIDIA is only available for CC >= 6.1
use_mul_mat_vec_q = use_mul_mat_vec_q && min_compute_capability >= MIN_CC_DP4A;
use_mul_mat_q = use_mul_mat_q && min_compute_capability >= MIN_CC_DP4A;
#ifdef CUDA_USE_TENSOR_CORES
// when tensor cores are available, use them for large batch size
// ref: https://github.com/ggerganov/llama.cpp/pull/3776
use_mul_mat_q = use_mul_mat_q && (!fp16_performance_good || src1->ne[1] <= MMQ_MAX_BATCH_SIZE);
#endif // CUDA_USE_TENSOR_CORES
#endif // defined(GGML_USE_HIPBLAS) && defined(__HIP_PLATFORM_AMD__)
// if mmvq is available it's a better choice than dmmv:
#ifndef GGML_CUDA_FORCE_DMMV
use_dequantize_mul_mat_vec = use_dequantize_mul_mat_vec && !use_mul_mat_vec_q;
#endif // GGML_CUDA_FORCE_DMMV
// debug helpers
//printf("src0: %8d %8d %8d %8d\n", src0->ne[0], src0->ne[1], src0->ne[2], src0->ne[3]);
//printf(" %8d %8d %8d %8d\n", src0->nb[0], src0->nb[1], src0->nb[2], src0->nb[3]);
//printf("src1: %8d %8d %8d %8d\n", src1->ne[0], src1->ne[1], src1->ne[2], src1->ne[3]);
//printf(" %8d %8d %8d %8d\n", src1->nb[0], src1->nb[1], src1->nb[2], src1->nb[3]);
//printf("src0 is contiguous %d, transposed %d, type = %s, name = %s\n", ggml_is_contiguous(src0), ggml_is_transposed(src0), ggml_type_name(src0->type), src0->name);
//printf("src1 is contiguous %d, transposed %d, type = %s, name = %s\n", ggml_is_contiguous(src1), ggml_is_transposed(src1), ggml_type_name(src1->type), src1->name);
if (!split && !fp16_performance_good && src0->type == GGML_TYPE_F16 && ggml_is_permuted(src0) && ggml_is_permuted(src1) && src1->ne[1] == 1) {
// KQ single-batch
ggml_cuda_mul_mat_vec_p021(ctx, src0, src1, dst);
} else if (!split && !fp16_performance_good && src0->type == GGML_TYPE_F16 && !ggml_is_contiguous(src0) && !ggml_is_transposed(src1) && src1->ne[1] == 1) {
// KQV single-batch
ggml_cuda_mul_mat_vec_nc(ctx, src0, src1, dst);
} else if (!split && src0->type == GGML_TYPE_F16 && (src1->type == GGML_TYPE_F16 || fp16_performance_good) && !ggml_is_transposed(src0) && !ggml_is_transposed(src1) && src1->ne[2]*src1->ne[3] > 1) {
// KQ + KQV multi-batch
ggml_cuda_mul_mat_batched_cublas(ctx, src0, src1, dst);
} else if (use_dequantize_mul_mat_vec) {
ggml_cuda_op_mul_mat(ctx, src0, src1, dst, ggml_cuda_op_dequantize_mul_mat_vec, false);
} else if (use_mul_mat_vec_q) {
ggml_cuda_op_mul_mat(ctx, src0, src1, dst, ggml_cuda_op_mul_mat_vec_q, true);
} else if (use_mul_mat_q) {
ggml_cuda_op_mul_mat(ctx, src0, src1, dst, ggml_cuda_op_mul_mat_q, true);
} else {
ggml_cuda_op_mul_mat(ctx, src0, src1, dst, ggml_cuda_op_mul_mat_cublas, false);
}
}
struct mmid_row_mapping {
int32_t i1;
int32_t i2;
};
static __global__ void k_copy_src1_to_contiguous(const char * __restrict__ src1_original, char * __restrict__ src1_contiguous,
int * __restrict__ cur_src1_row, mmid_row_mapping * __restrict__ row_mapping,
const char * __restrict ids, int64_t i02, size_t ids_nb1, size_t ids_nb0,
int64_t ne11, int64_t ne10,
size_t nb11, size_t nb12) {
int32_t iid1 = blockIdx.x;
int32_t id = blockIdx.y;
const int32_t row_id_i = *(const int32_t *) (ids + iid1*ids_nb1 + id*ids_nb0);
if (row_id_i != i02) {
return;
}
const int64_t i11 = id % ne11;
const int64_t i12 = iid1;
__shared__ int src1_row;
if (threadIdx.x == 0) {
src1_row = atomicAdd(cur_src1_row, 1);
row_mapping[src1_row] = {id, iid1};
}
__syncthreads();
const float * src1_row_original = (const float *)(src1_original + i11*nb11 + i12*nb12);
float * src1_row_contiguous = (float *)(src1_contiguous + src1_row*nb11);
for (int i = threadIdx.x; i < ne10; i += blockDim.x) {
src1_row_contiguous[i] = src1_row_original[i];
}
}
static __global__ void k_copy_dst_from_contiguous(char * __restrict__ dst_original, const char * __restrict__ dst_contiguous,
const mmid_row_mapping * __restrict__ row_mapping,
int64_t ne0,
size_t nb1, size_t nb2) {
int32_t i = blockIdx.x;
const int32_t i1 = row_mapping[i].i1;
const int32_t i2 = row_mapping[i].i2;
const float * dst_row_contiguous = (const float *)(dst_contiguous + i*nb1);
float * dst_row_original = (float *)(dst_original + i1*nb1 + i2*nb2);
for (int j = threadIdx.x; j < ne0; j += blockDim.x) {
dst_row_original[j] = dst_row_contiguous[j];
}
}
static void ggml_cuda_mul_mat_id(ggml_backend_cuda_context & ctx, ggml_tensor * dst) {
const ggml_tensor * src0 = dst->src[0];
const ggml_tensor * src1 = dst->src[1];
const ggml_tensor * ids = dst->src[2];
GGML_TENSOR_BINARY_OP_LOCALS
GGML_ASSERT(!ggml_backend_buffer_is_cuda_split(src0->buffer) && "mul_mat_id does not support split buffers");
cudaStream_t stream = ctx.stream();
const int64_t n_as = ne02;
const int64_t n_ids = ids->ne[0];
std::vector<char> ids_host(ggml_nbytes(ids));
const char * ids_dev = (const char *) ids->data;
CUDA_CHECK(cudaMemcpyAsync(ids_host.data(), ids_dev, ggml_nbytes(ids), cudaMemcpyDeviceToHost, stream));
CUDA_CHECK(cudaStreamSynchronize(stream));
ggml_tensor src0_row = *src0;
ggml_tensor src1_row = *src1;
ggml_tensor dst_row = *dst;
char * src0_original = (char *) src0->data;
char * src1_original = (char *) src1->data;
char * dst_original = (char *) dst->data;
src0_row.ne[2] = 1;
src0_row.ne[3] = 1;
src0_row.nb[3] = nb02;
src1_row.ne[1] = 1;
src1_row.ne[2] = 1;
src1_row.ne[3] = 1;
src1_row.nb[2] = nb11;
src1_row.nb[3] = nb11;
dst_row.ne[1] = 1;
dst_row.ne[2] = 1;
dst_row.ne[3] = 1;
dst_row.nb[2] = nb1;
dst_row.nb[3] = nb1;
if (ne12 == 1) {
for (int64_t iid1 = 0; iid1 < ids->ne[1]; iid1++) {
for (int64_t id = 0; id < n_ids; id++) {
const int32_t i02 = *(const int32_t *) (ids_host.data() + iid1*ids->nb[1] + id*ids->nb[0]);
GGML_ASSERT(i02 >= 0 && i02 < n_as);
const int64_t i11 = id % ne11;
const int64_t i12 = iid1;
const int64_t i1 = id;
const int64_t i2 = i12;
src0_row.data = src0_original + i02*nb02;
src1_row.data = src1_original + i11*nb11 + i12*nb12;
dst_row.data = dst_original + i1*nb1 + i2*nb2;
ggml_cuda_mul_mat(ctx, &src0_row, &src1_row, &dst_row);
}
}
} else {
ggml_cuda_pool_alloc<char> src1_contiguous(ctx.pool(), sizeof(float)*ggml_nelements(src1));
ggml_cuda_pool_alloc<char> dst_contiguous(ctx.pool(), sizeof(float)*ggml_nelements(dst));
src1_row.data = src1_contiguous.get();
dst_row.data = dst_contiguous.get();
for (int64_t i02 = 0; i02 < n_as; i02++) {
int64_t num_src1_rows = 0;
for (int64_t iid1 = 0; iid1 < ids->ne[1]; iid1++) {
for (int64_t id = 0; id < n_ids; id++) {
const int32_t row_id_i = *(const int32_t *) (ids_host.data() + iid1*ids->nb[1] + id*ids->nb[0]);
GGML_ASSERT(row_id_i >= 0 && row_id_i < n_as);
if (row_id_i != i02) {
continue;
}
num_src1_rows++;
}
}
if (num_src1_rows == 0) {
continue;
}
ggml_cuda_pool_alloc<int> dev_cur_src1_row(ctx.pool(), 1);
ggml_cuda_pool_alloc<mmid_row_mapping> dev_row_mapping(ctx.pool(), num_src1_rows);
CUDA_CHECK(cudaMemsetAsync(dev_cur_src1_row.get(), 0, sizeof(int), stream));
{
dim3 block_dims(std::min((unsigned int)ne10, 768u));
dim3 grid_dims(ids->ne[1], n_ids);
k_copy_src1_to_contiguous<<<grid_dims, block_dims, 0, stream>>>(
src1_original, src1_contiguous.get(),
dev_cur_src1_row.get(), dev_row_mapping.get(),
ids_dev, i02, ids->nb[1], ids->nb[0],
ne11, ne10,
nb11, nb12);
CUDA_CHECK(cudaGetLastError());
}
src0_row.data = src0_original + i02*nb02;
GGML_ASSERT(nb11 == sizeof(float)*ne10);
GGML_ASSERT(nb1 == sizeof(float)*ne0);
src1_row.ne[1] = num_src1_rows;
src1_row.nb[1] = nb11;
src1_row.nb[2] = num_src1_rows*nb11;
src1_row.nb[3] = num_src1_rows*nb11;
dst_row.ne[1] = num_src1_rows;
dst_row.nb[1] = nb1;
dst_row.nb[2] = num_src1_rows*nb1;
dst_row.nb[3] = num_src1_rows*nb1;
ggml_cuda_mul_mat(ctx, &src0_row, &src1_row, &dst_row);
{
dim3 block_dims(std::min((unsigned int)ne0, 768u));
dim3 grid_dims(num_src1_rows);
k_copy_dst_from_contiguous<<<grid_dims, block_dims, 0, stream>>>(
dst_original, dst_contiguous.get(),
dev_row_mapping.get(),
ne0,
nb1, nb2);
CUDA_CHECK(cudaGetLastError());
}
}
}
}
static bool ggml_cuda_compute_forward(ggml_backend_cuda_context & ctx, struct ggml_tensor * dst) {
// why is this here instead of mul_mat?
if (dst->src[0] != nullptr && ggml_backend_buffer_is_cuda_split(dst->src[0]->buffer)) {
ggml_cuda_set_peer_access(dst->src[1]->ne[1], ctx.device);
}
switch (dst->op) {
case GGML_OP_REPEAT:
ggml_cuda_op_repeat(ctx, dst);
break;
case GGML_OP_GET_ROWS:
ggml_cuda_op_get_rows(ctx, dst);
break;
case GGML_OP_DUP:
ggml_cuda_dup(ctx, dst);
break;
case GGML_OP_CPY:
ggml_cuda_cpy(ctx, dst->src[0], dst->src[1]);
break;
case GGML_OP_CONT:
ggml_cuda_dup(ctx, dst);
break;
case GGML_OP_ADD:
ggml_cuda_op_add(ctx, dst);
break;
case GGML_OP_ACC:
ggml_cuda_op_acc(ctx, dst);
break;
case GGML_OP_MUL:
ggml_cuda_op_mul(ctx, dst);
break;
case GGML_OP_DIV:
ggml_cuda_op_div(ctx, dst);
break;
case GGML_OP_UNARY:
switch (ggml_get_unary_op(dst)) {
case GGML_UNARY_OP_GELU:
ggml_cuda_op_gelu(ctx, dst);
break;
case GGML_UNARY_OP_SILU:
ggml_cuda_op_silu(ctx, dst);
break;
case GGML_UNARY_OP_GELU_QUICK:
ggml_cuda_op_gelu_quick(ctx, dst);
break;
case GGML_UNARY_OP_TANH:
ggml_cuda_op_tanh(ctx, dst);
break;
case GGML_UNARY_OP_RELU:
ggml_cuda_op_relu(ctx, dst);
break;
case GGML_UNARY_OP_HARDSIGMOID:
ggml_cuda_op_hardsigmoid(ctx, dst);
break;
case GGML_UNARY_OP_HARDSWISH:
ggml_cuda_op_hardswish(ctx, dst);
break;
default:
return false;
}
break;
case GGML_OP_NORM:
ggml_cuda_op_norm(ctx, dst);
break;
case GGML_OP_GROUP_NORM:
ggml_cuda_op_group_norm(ctx, dst);
break;
case GGML_OP_CONCAT:
ggml_cuda_op_concat(ctx, dst);
break;
case GGML_OP_UPSCALE:
ggml_cuda_op_upscale(ctx, dst);
break;
case GGML_OP_PAD:
ggml_cuda_op_pad(ctx, dst);
break;
case GGML_OP_ARANGE:
ggml_cuda_op_arange(ctx, dst);
break;
case GGML_OP_TIMESTEP_EMBEDDING:
ggml_cuda_op_timestep_embedding(ctx, dst);
break;
case GGML_OP_LEAKY_RELU:
ggml_cuda_op_leaky_relu(ctx, dst);
break;
case GGML_OP_RMS_NORM:
ggml_cuda_op_rms_norm(ctx, dst);
break;
case GGML_OP_MUL_MAT:
if (dst->src[0]->ne[3] != dst->src[1]->ne[3]) {
fprintf(stderr, "%s: cannot compute %s: src0->ne[3] = %" PRId64 ", src1->ne[3] = %" PRId64 " - fallback to CPU\n", __func__, dst->name, dst->src[0]->ne[3], dst->src[1]->ne[3]);
return false;
} else {
ggml_cuda_mul_mat(ctx, dst->src[0], dst->src[1], dst);
}
break;
case GGML_OP_MUL_MAT_ID:
ggml_cuda_mul_mat_id(ctx, dst);
break;
case GGML_OP_SCALE:
ggml_cuda_op_scale(ctx, dst);
break;
case GGML_OP_SQR:
ggml_cuda_op_sqr(ctx, dst);
break;
case GGML_OP_CLAMP:
ggml_cuda_op_clamp(ctx, dst);
break;
case GGML_OP_NONE:
case GGML_OP_RESHAPE:
case GGML_OP_VIEW:
case GGML_OP_PERMUTE:
case GGML_OP_TRANSPOSE:
break;
case GGML_OP_DIAG_MASK_INF:
ggml_cuda_op_diag_mask_inf(ctx, dst);
break;
case GGML_OP_SOFT_MAX:
ggml_cuda_op_soft_max(ctx, dst);
break;
case GGML_OP_ROPE:
ggml_cuda_op_rope(ctx, dst);
break;
case GGML_OP_ALIBI:
ggml_cuda_op_alibi(ctx, dst);
break;
case GGML_OP_IM2COL:
ggml_cuda_op_im2col(ctx, dst);
break;
case GGML_OP_POOL_2D:
ggml_cuda_op_pool2d(ctx, dst);
break;
case GGML_OP_SUM_ROWS:
ggml_cuda_op_sum_rows(ctx, dst);
break;
case GGML_OP_ARGSORT:
ggml_cuda_op_argsort(ctx, dst);
break;
default:
return false;
}
cudaError_t err = cudaGetLastError();
if (err != cudaSuccess) {
fprintf(stderr, "%s: %s failed\n", __func__, ggml_op_desc(dst));
CUDA_CHECK(err);
}
return true;
}
////////////////////////////////////////////////////////////////////////////////
// backend
GGML_CALL static const char * ggml_backend_cuda_name(ggml_backend_t backend) {
ggml_backend_cuda_context * cuda_ctx = (ggml_backend_cuda_context *)backend->context;
return cuda_ctx->name.c_str();
}
GGML_CALL static void ggml_backend_cuda_free(ggml_backend_t backend) {
ggml_backend_cuda_context * cuda_ctx = (ggml_backend_cuda_context *)backend->context;
delete cuda_ctx;
delete backend;
}
GGML_CALL static ggml_backend_buffer_type_t ggml_backend_cuda_get_default_buffer_type(ggml_backend_t backend) {
ggml_backend_cuda_context * cuda_ctx = (ggml_backend_cuda_context *)backend->context;
return ggml_backend_cuda_buffer_type(cuda_ctx->device);
}
GGML_CALL static void ggml_backend_cuda_set_tensor_async(ggml_backend_t backend, ggml_tensor * tensor, const void * data, size_t offset, size_t size) {
ggml_backend_cuda_context * cuda_ctx = (ggml_backend_cuda_context *)backend->context;
ggml_backend_buffer_t buf = tensor->view_src ? tensor->view_src->buffer : tensor->buffer;
GGML_ASSERT(buf->buft == ggml_backend_cuda_buffer_type(cuda_ctx->device) && "unsupported buffer type");
CUDA_CHECK(cudaMemcpyAsync((char *)tensor->data + offset, data, size, cudaMemcpyHostToDevice, cuda_ctx->stream()));
}
GGML_CALL static void ggml_backend_cuda_get_tensor_async(ggml_backend_t backend, const ggml_tensor * tensor, void * data, size_t offset, size_t size) {
ggml_backend_cuda_context * cuda_ctx = (ggml_backend_cuda_context *)backend->context;
ggml_backend_buffer_t buf = tensor->view_src ? tensor->view_src->buffer : tensor->buffer;
GGML_ASSERT(buf->buft == ggml_backend_cuda_buffer_type(cuda_ctx->device) && "unsupported buffer type");
CUDA_CHECK(cudaMemcpyAsync(data, (const char *)tensor->data + offset, size, cudaMemcpyDeviceToHost, cuda_ctx->stream()));
}
GGML_CALL static bool ggml_backend_cuda_cpy_tensor_async(ggml_backend_t backend_src, ggml_backend_t backend_dst, const ggml_tensor * src, ggml_tensor * dst) {
GGML_ASSERT(ggml_backend_is_cuda(backend_src) || ggml_backend_is_cuda(backend_dst));
ggml_backend_buffer_t buf_src = src->view_src ? src->view_src->buffer : src->buffer;
ggml_backend_buffer_t buf_dst = dst->view_src ? dst->view_src->buffer : dst->buffer;
if (!ggml_backend_buffer_is_cuda(src->buffer)) {
return false;
}
if (!ggml_backend_buffer_is_cuda(dst->buffer)) {
return false;
}
// device -> device
ggml_backend_cuda_context * cuda_ctx_src = (ggml_backend_cuda_context *)backend_src->context;
ggml_backend_cuda_context * cuda_ctx_dst = (ggml_backend_cuda_context *)backend_dst->context;
if (backend_src != backend_dst) {
ggml_backend_cuda_buffer_context * buf_ctx_src = (ggml_backend_cuda_buffer_context *)buf_src->context;
ggml_backend_cuda_buffer_context * buf_ctx_dst = (ggml_backend_cuda_buffer_context *)buf_dst->context;
GGML_ASSERT(cuda_ctx_src->device == buf_ctx_src->device);
GGML_ASSERT(cuda_ctx_dst->device == buf_ctx_dst->device);
// copy on src stream
if (cuda_ctx_src->device == cuda_ctx_dst->device) {
CUDA_CHECK(cudaMemcpyAsync(dst->data, src->data, ggml_nbytes(dst), cudaMemcpyDeviceToDevice, cuda_ctx_dst->stream()));
} else {
#ifdef GGML_CUDA_NO_PEER_COPY
return false;
#else
CUDA_CHECK(cudaMemcpyPeerAsync(dst->data, cuda_ctx_dst->device, src->data, cuda_ctx_src->device, ggml_nbytes(dst), cuda_ctx_src->stream()));
#endif
}
// record event on src stream
if (!cuda_ctx_src->copy_event) {
ggml_cuda_set_device(cuda_ctx_src->device);
CUDA_CHECK(cudaEventCreateWithFlags(&cuda_ctx_src->copy_event, cudaEventDisableTiming));
}
CUDA_CHECK(cudaEventRecord(cuda_ctx_src->copy_event, cuda_ctx_src->stream()));
// wait on dst stream for the copy to complete
CUDA_CHECK(cudaStreamWaitEvent(cuda_ctx_dst->stream(), cuda_ctx_src->copy_event, 0));
} else {
// src and dst are on the same backend
CUDA_CHECK(cudaMemcpyAsync(dst->data, src->data, ggml_nbytes(dst), cudaMemcpyDeviceToDevice, cuda_ctx_dst->stream()));
}
return true;
}
GGML_CALL static void ggml_backend_cuda_synchronize(ggml_backend_t backend) {
ggml_backend_cuda_context * cuda_ctx = (ggml_backend_cuda_context *)backend->context;
CUDA_CHECK(cudaStreamSynchronize(cuda_ctx->stream()));
GGML_UNUSED(backend);
}
struct ggml_cudaGraph {
int count=0;
cudaGraph_t graph = nullptr;
cudaGraphExec_t instance = nullptr;
size_t numNodes = 0;
int softmax_ne0 = 0;
};
GGML_CALL static enum ggml_status ggml_backend_cuda_graph_compute(ggml_backend_t backend, ggml_cgraph * cgraph) {
ggml_backend_cuda_context * cuda_ctx = (ggml_backend_cuda_context *)backend->context;
ggml_cuda_set_device(cuda_ctx->device);
// Objects required for CUDA Graph
#define MAX_NODES_IN_CUDA_GRAPH 10000
static ggml_cudaGraph cudaGraph; //TO DO move this to a suitable persistant location (and avoid use of static memory)
bool useCudaGraph = (cudaGraph.count>=2); //avoid CUDA graphs on first 2 steps due to incompatible initialisations.
char** updatedKernelArg[MAX_NODES_IN_CUDA_GRAPH];
bool cudaGraphUpdateRequired = false;
// pointer to CUDA cpy kernel, which is required to identify
// kernel parameters which need updated in the graph for each token
void* ggmlCudaCpyFn = nullptr;
if(useCudaGraph) {
if(cudaGraph.instance == nullptr) cudaGraphUpdateRequired=true;
// Loop over nodes in GGML graph to obtain info needed for CUDA graph
int k=0;
for (int i = 0; i < cgraph->n_nodes; i++) {
ggml_tensor * node = cgraph->nodes[i];
// Identify if the graph needs updated for this token due to the number of elements changing
// (identified by inspecting soft max op parameters)
if(node->op == GGML_OP_SOFT_MAX) {
if(node->src[0]->ne[0] != cudaGraph.softmax_ne0) {
cudaGraphUpdateRequired = true;
cudaGraph.softmax_ne0 = node->src[0]->ne[0];
}
}
if(node->op == GGML_OP_CPY) {
// store the copy op parameter which changes with each token.
updatedKernelArg[k++]=(char**) &(node->src[1]->data);
if(ggmlCudaCpyFn == nullptr){
// store a pointer to the copy op CUDA kernel to identify it later
ggmlCudaCpyFn = ggml_cuda_cpy_fn(node->src[0], node->src[1]);
}
}
}
}
if(useCudaGraph && cudaGraphUpdateRequired) { // Start CUDA graph capture
CUDA_CHECK(cudaStreamBeginCapture(cuda_ctx->stream(), cudaStreamCaptureModeGlobal));
}
// Only perfom the graph exection if CUDA graphs are not enebled, or we are capturing the graph.
// With use of CUDA graphs, the execution will be performed by the graph launch.
if(!useCudaGraph || cudaGraphUpdateRequired) {
//temporarily avoid indenting here to make code review easier
for (int i = 0; i < cgraph->n_nodes; i++) {
ggml_tensor * node = cgraph->nodes[i];
if (ggml_is_empty(node) || node->op == GGML_OP_RESHAPE || node->op == GGML_OP_TRANSPOSE || node->op == GGML_OP_VIEW || node->op == GGML_OP_PERMUTE || node->op == GGML_OP_NONE) {
continue;
}
#ifndef NDEBUG
assert(node->buffer->buft == ggml_backend_cuda_buffer_type(cuda_ctx->device));
for (int j = 0; j < GGML_MAX_SRC; j++) {
if (node->src[j] != nullptr) {
assert(node->src[j]->buffer->buft == ggml_backend_cuda_buffer_type(cuda_ctx->device) || ggml_backend_buffer_is_cuda_split(node->src[j]->buffer));
}
}
#endif
bool ok = ggml_cuda_compute_forward(*cuda_ctx, node);
if (!ok) {
fprintf(stderr, "%s: error: op not supported %s (%s)\n", __func__, node->name, ggml_op_name(node->op));
}
GGML_ASSERT(ok);
}
}
if(useCudaGraph && (cudaGraphUpdateRequired)) { // End CUDA graph capture
CUDA_CHECK(cudaStreamEndCapture(cuda_ctx->stream(), &cudaGraph.graph));
}
if(useCudaGraph){
if(cudaGraph.instance == nullptr) { // Create executable graph from captured graph.
CUDA_CHECK(cudaGraphInstantiate(&cudaGraph.instance, cudaGraph.graph, NULL, NULL, 0));
}
// Perform update to graph (if required for this token), and change copy parameter (required for every token)
cudaGraphNode_t nodes[MAX_NODES_IN_CUDA_GRAPH];
CUDA_KERNEL_NODE_PARAMS_v2 paramsDriver[MAX_NODES_IN_CUDA_GRAPH];
cudaKernelNodeParams paramsRuntime[MAX_NODES_IN_CUDA_GRAPH];
if(cudaGraphUpdateRequired) {
// Extract nodes from graph
if(cudaGraph.numNodes == 0) {
CUDA_CHECK(cudaGraphGetNodes(cudaGraph.graph, nullptr, &cudaGraph.numNodes));
}
CUDA_CHECK(cudaGraphGetNodes(cudaGraph.graph, nodes, &cudaGraph.numNodes));
// Loop over nodes, and extract kernel parameters fro each node
for(size_t i=0; i<cudaGraph.numNodes; i++) {
// We currently get a set of params using both driver and runtime, to work around an issue (see below)
CU_CHECK(cuGraphKernelNodeGetParams(nodes[i], &paramsDriver[i])); // Get params using driver
cudaError_t statRT = cudaGraphKernelNodeGetParams(nodes[i], &paramsRuntime[i]); // Get params using runtime
if(statRT == 98) {
// Fails due to incorrect handling by CUDA runtime of CUDA BLAS node.
// We don't need to update blas nodes, so clear error and move on.
cudaGetLastError();
}
}
}
// Update copy kernel param (required every token)
// Currently uses runtime copy of params to identify copy function node,
// and driver copy of params to perform the update
// TO DO work out how to do it only using runtime copy.
if(!cudaGraphUpdateRequired) { // on update steps, the live parameters will already be captured
int k=0;
for(size_t i=0; i<cudaGraph.numNodes; i++) {
if(paramsRuntime[i].func == ggmlCudaCpyFn) {
char** updatedKernelArgPointer = updatedKernelArg[k++];
paramsDriver[i].kernelParams[1] = updatedKernelArgPointer;
CU_CHECK(cuGraphKernelNodeSetParams(nodes[i], &paramsDriver[i]));
}
}
}
// Update graph executable
cudaGraphExecUpdateResultInfo resultInfo;
CUDA_CHECK(cudaGraphExecUpdate(cudaGraph.instance, cudaGraph.graph, &resultInfo));
// Launch graph
CUDA_CHECK(cudaGraphLaunch(cudaGraph.instance, cuda_ctx->stream()));
}
cudaGraph.count++;
return GGML_STATUS_SUCCESS;
}
GGML_CALL static bool ggml_backend_cuda_supports_op(ggml_backend_t backend, const ggml_tensor * op) {
switch (op->op) {
case GGML_OP_UNARY:
switch (ggml_get_unary_op(op)) {
case GGML_UNARY_OP_GELU:
case GGML_UNARY_OP_SILU:
case GGML_UNARY_OP_RELU:
case GGML_UNARY_OP_HARDSIGMOID:
case GGML_UNARY_OP_HARDSWISH:
case GGML_UNARY_OP_GELU_QUICK:
case GGML_UNARY_OP_TANH:
return true;
default:
return false;
}
break;
case GGML_OP_MUL_MAT:
case GGML_OP_MUL_MAT_ID:
{
struct ggml_tensor * a;
struct ggml_tensor * b;
if (op->op == GGML_OP_MUL_MAT) {
a = op->src[0];
b = op->src[1];
} else {
a = op->src[2];
b = op->src[1];
}
if (a->ne[3] != b->ne[3]) {
return false;
}
ggml_type a_type = a->type;
if (a_type == GGML_TYPE_IQ2_XXS || a_type == GGML_TYPE_IQ2_XS || a_type == GGML_TYPE_IQ3_XXS ||
a_type == GGML_TYPE_IQ1_S || a_type == GGML_TYPE_IQ4_NL || a_type == GGML_TYPE_IQ3_S ||
a_type == GGML_TYPE_IQ1_M || a_type == GGML_TYPE_IQ2_S || a_type == GGML_TYPE_IQ4_XS) {
if (b->ne[1] == 1 && ggml_nrows(b) > 1) {
return false;
}
}
return true;
} break;
case GGML_OP_GET_ROWS:
{
switch (op->src[0]->type) {
case GGML_TYPE_F16:
case GGML_TYPE_F32:
case GGML_TYPE_Q4_0:
case GGML_TYPE_Q4_1:
case GGML_TYPE_Q5_0:
case GGML_TYPE_Q5_1:
case GGML_TYPE_Q8_0:
return true;
default:
return false;
}
} break;
case GGML_OP_CPY:
{
ggml_type src0_type = op->src[0]->type;
ggml_type src1_type = op->src[1]->type;
if (src0_type == GGML_TYPE_F32 && src1_type == GGML_TYPE_F32) {
return true;
}
if (src0_type == GGML_TYPE_F32 && src1_type == GGML_TYPE_F16) {
return true;
}
if (src0_type == GGML_TYPE_F32 && src1_type == GGML_TYPE_Q8_0) {
return true;
}
if (src0_type == GGML_TYPE_F32 && src1_type == GGML_TYPE_Q4_0) {
return true;
}
if (src0_type == GGML_TYPE_F32 && src1_type == GGML_TYPE_Q4_1) {
return true;
}
if (src0_type == GGML_TYPE_F32 && src1_type == GGML_TYPE_Q5_0) {
return true;
}
if (src0_type == GGML_TYPE_F32 && src1_type == GGML_TYPE_Q5_1) {
return true;
}
if (src0_type == GGML_TYPE_F32 && src1_type == GGML_TYPE_IQ4_NL) {
return true;
}
if (src0_type == GGML_TYPE_F16 && src1_type == GGML_TYPE_F16) {
return true;
}
if (src0_type == GGML_TYPE_F16 && src1_type == GGML_TYPE_F32) {
return true;
}
return false;
} break;
case GGML_OP_DUP:
case GGML_OP_REPEAT:
case GGML_OP_CONCAT:
{
ggml_type src0_type = op->src[0]->type;
return src0_type != GGML_TYPE_I32 && src0_type != GGML_TYPE_I16;
} break;
case GGML_OP_NONE:
case GGML_OP_RESHAPE:
case GGML_OP_VIEW:
case GGML_OP_PERMUTE:
case GGML_OP_TRANSPOSE:
case GGML_OP_NORM:
case GGML_OP_ADD:
case GGML_OP_MUL:
case GGML_OP_DIV:
case GGML_OP_RMS_NORM:
case GGML_OP_SCALE:
case GGML_OP_SQR:
case GGML_OP_CLAMP:
case GGML_OP_CONT:
case GGML_OP_DIAG_MASK_INF:
case GGML_OP_SOFT_MAX:
case GGML_OP_ROPE:
case GGML_OP_ALIBI:
case GGML_OP_IM2COL:
case GGML_OP_POOL_2D:
case GGML_OP_SUM_ROWS:
case GGML_OP_ARGSORT:
case GGML_OP_ACC:
case GGML_OP_GROUP_NORM:
case GGML_OP_UPSCALE:
case GGML_OP_PAD:
case GGML_OP_ARANGE:
case GGML_OP_TIMESTEP_EMBEDDING:
case GGML_OP_LEAKY_RELU:
return true;
default:
return false;
}
GGML_UNUSED(backend);
}
GGML_CALL static bool ggml_backend_cuda_offload_op(ggml_backend_t backend, const ggml_tensor * op) {
const int min_batch_size = 32;
return (op->ne[1] >= min_batch_size && op->op != GGML_OP_GET_ROWS) ||
(op->ne[2] >= min_batch_size && op->op == GGML_OP_MUL_MAT_ID);
GGML_UNUSED(backend);
}
static ggml_backend_event_t ggml_backend_cuda_event_new(ggml_backend_t backend) {
#ifdef GGML_CUDA_NO_PEER_COPY
return nullptr;
#else
ggml_backend_cuda_context * cuda_ctx = (ggml_backend_cuda_context *)backend->context;
ggml_cuda_set_device(cuda_ctx->device);
cudaEvent_t event;
CUDA_CHECK(cudaEventCreateWithFlags(&event, cudaEventDisableTiming));
return new ggml_backend_event {
/* .backend = */ backend,
/* .context = */ event,
};
#endif
}
static void ggml_backend_cuda_event_free(ggml_backend_event_t event) {
CUDA_CHECK(cudaEventDestroy((cudaEvent_t)event->context));
delete event;
}
static void ggml_backend_cuda_event_record(ggml_backend_event_t event) {
ggml_backend_cuda_context * cuda_ctx = (ggml_backend_cuda_context *)event->backend->context;
CUDA_CHECK(cudaEventRecord((cudaEvent_t)event->context, cuda_ctx->stream()));
}
static void ggml_backend_cuda_event_wait(ggml_backend_t backend, ggml_backend_event_t event) {
ggml_backend_cuda_context * cuda_ctx = (ggml_backend_cuda_context *)backend->context;
if (ggml_backend_is_cuda(event->backend)) {
CUDA_CHECK(cudaStreamWaitEvent(cuda_ctx->stream(), (cudaEvent_t)event->context, 0));
} else {
#if 0
// untested
auto wait_fn = [](void * user_data) {
ggml_backend_event_t event = (ggml_backend_event_t)user_data;
ggml_backend_event_synchronize(event);
};
CUDA_CHECK(cudaLaunchHostFunc(cuda_ctx->stream(), wait_fn, event));
#endif
GGML_ASSERT(false);
}
}
static void ggml_backend_cuda_event_synchronize(ggml_backend_event_t event) {
CUDA_CHECK(cudaEventSynchronize((cudaEvent_t)event->context));
}
static ggml_backend_i ggml_backend_cuda_interface = {
/* .get_name = */ ggml_backend_cuda_name,
/* .free = */ ggml_backend_cuda_free,
/* .get_default_buffer_type = */ ggml_backend_cuda_get_default_buffer_type,
/* .set_tensor_async = */ ggml_backend_cuda_set_tensor_async,
/* .get_tensor_async = */ ggml_backend_cuda_get_tensor_async,
/* .cpy_tensor_async = */ ggml_backend_cuda_cpy_tensor_async,
/* .synchronize = */ ggml_backend_cuda_synchronize,
/* .graph_plan_create = */ NULL,
/* .graph_plan_free = */ NULL,
/* .graph_plan_compute = */ NULL,
/* .graph_compute = */ ggml_backend_cuda_graph_compute,
/* .supports_op = */ ggml_backend_cuda_supports_op,
/* .offload_op = */ ggml_backend_cuda_offload_op,
/* .event_new = */ ggml_backend_cuda_event_new,
/* .event_free = */ ggml_backend_cuda_event_free,
/* .event_record = */ ggml_backend_cuda_event_record,
/* .event_wait = */ ggml_backend_cuda_event_wait,
/* .event_synchronize = */ ggml_backend_cuda_event_synchronize,
};
static ggml_guid_t ggml_backend_cuda_guid() {
static ggml_guid guid = { 0x2c, 0xdd, 0xe8, 0x1c, 0x65, 0xb3, 0x65, 0x73, 0x6a, 0x12, 0x88, 0x61, 0x1c, 0xc9, 0xdc, 0x25 };
return &guid;
}
GGML_CALL ggml_backend_t ggml_backend_cuda_init(int device) {
if (device < 0 || device >= ggml_backend_cuda_get_device_count()) {
fprintf(stderr, "%s: error: invalid device %d\n", __func__, device);
return nullptr;
}
ggml_backend_cuda_context * ctx = new ggml_backend_cuda_context(device);
if (ctx == nullptr) {
fprintf(stderr, "%s: error: failed to allocate context\n", __func__);
return nullptr;
}
ggml_backend_t cuda_backend = new ggml_backend {
/* .guid = */ ggml_backend_cuda_guid(),
/* .interface = */ ggml_backend_cuda_interface,
/* .context = */ ctx
};
return cuda_backend;
}
GGML_CALL bool ggml_backend_is_cuda(ggml_backend_t backend) {
return backend != NULL && ggml_guid_matches(backend->guid, ggml_backend_cuda_guid());
}
GGML_CALL int ggml_backend_cuda_get_device_count() {
return ggml_cuda_info().device_count;
}
GGML_CALL void ggml_backend_cuda_get_device_description(int device, char * description, size_t description_size) {
cudaDeviceProp prop;
CUDA_CHECK(cudaGetDeviceProperties(&prop, device));
snprintf(description, description_size, "%s", prop.name);
}
GGML_CALL void ggml_backend_cuda_get_device_memory(int device, size_t * free, size_t * total) {
ggml_cuda_set_device(device);
CUDA_CHECK(cudaMemGetInfo(free, total));
}
GGML_CALL bool ggml_backend_cuda_register_host_buffer(void * buffer, size_t size) {
if (getenv("GGML_CUDA_REGISTER_HOST") == nullptr) {
return false;
}
#if CUDART_VERSION >= 11100
cudaError_t err = cudaHostRegister(buffer, size, cudaHostRegisterPortable | cudaHostRegisterReadOnly);
if (err != cudaSuccess) {
// clear the error
cudaGetLastError();
fprintf(stderr, "%s: warning: failed to register %.2f MiB of pinned memory: %s\n", __func__,
size/1024.0/1024.0, cudaGetErrorString(err));
return false;
}
return true;
#else
return false;
#endif
}
GGML_CALL void ggml_backend_cuda_unregister_host_buffer(void * buffer) {
if (getenv("GGML_CUDA_REGISTER_HOST") == nullptr) {
return;
}
cudaError_t err = cudaHostUnregister(buffer);
if (err != cudaSuccess) {
// clear the error
cudaGetLastError();
}
}
// backend registry
GGML_CALL static ggml_backend_t ggml_backend_reg_cuda_init(const char * params, void * user_data) {
ggml_backend_t cuda_backend = ggml_backend_cuda_init((int) (intptr_t) user_data);
return cuda_backend;
GGML_UNUSED(params);
}
extern "C" GGML_CALL int ggml_backend_cuda_reg_devices();
GGML_CALL int ggml_backend_cuda_reg_devices() {
int device_count = ggml_backend_cuda_get_device_count();
//int device_count = 1; // DEBUG: some tools require delaying CUDA initialization
for (int i = 0; i < device_count; i++) {
char name[128];
snprintf(name, sizeof(name), "%s%d", GGML_CUDA_NAME, i);
ggml_backend_register(name, ggml_backend_reg_cuda_init, ggml_backend_cuda_buffer_type(i), (void *) (intptr_t) i);
}
return device_count;
}
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