mirror of
https://github.com/ggerganov/llama.cpp.git
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opencl : fix kernels for the new formats (#1422)
* Fix OpenCL kernels for the new formats * Fix Q5_0 alignment issues.
This commit is contained in:
Henri Vasserman
GitHub
parent
fb62f92433
commit
699b1ad7fe
209
ggml-opencl.c
209
ggml-opencl.c
@ -12,109 +12,129 @@
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#define MULTILINE_QUOTE(...) #__VA_ARGS__
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const char * clblast_dequant = MULTILINE_QUOTE(
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typedef uchar uint8_t;
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typedef int int32_t;
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typedef uint uint32_t;
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constant uint QK4_0 = 32;
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struct block_q4_0
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{
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float d;
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uchar qs[16];
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uint8_t qs[QK4_0 / 2];
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};
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__kernel void dequantize_row_q4_0(__global struct block_q4_0* blocks, __global float* result) {
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const uint i = get_global_id(0) / 32;
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const uint l = get_local_id(0);
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const float d = blocks[i].d;
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const uchar vi = blocks[i].qs[l];
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const uint index = i*32 + l*2;
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result[index + 0] = ((vi & 0xf) - 8)*d;
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result[index + 1] = ((vi >> 4) - 8)*d;
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}
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constant uint QK4_1 = 32;
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struct block_q4_1
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{
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float d;
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float m;
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uchar qs[16];
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uint8_t qs[QK4_1 / 2];
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};
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__kernel void dequantize_row_q4_1(__global struct block_q4_1* blocks, __global float* result) {
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const uint i = get_global_id(0) / 32;
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const uint l = get_local_id(0);
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const float d = blocks[i].d;
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const float m = blocks[i].m;
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const uchar vi = blocks[i].qs[l];
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const uint index = i*32 + l*2;
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result[index + 0] = (vi & 0xf) * d + m;
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result[index + 1] = (vi >> 4) * d + m;
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}
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struct block_q5_0
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constant uint QK5_0 = 32;
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struct __attribute__ ((packed)) block_q5_0
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{
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float d;
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uint qh;
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uchar qs[16];
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half d;
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uint32_t qh;
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uint8_t qs[QK5_0 / 2];
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};
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__kernel void dequantize_row_q5_0(__global struct block_q5_0* blocks, __global float* result) {
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const uint i = get_global_id(0) / 32;
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const uint l = get_local_id(0);
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const float d = blocks[i].d;
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const uchar vi = blocks[i].qs[l];
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const uint l2 = l * 2;
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const uchar vh0 = ((blocks[i].qh & (1 << (l2 + 0))) >> (l2 + 0)) << 4;
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const uchar vh1 = ((blocks[i].qh & (1 << (l2 + 1))) >> (l2 + 1)) << 4;
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const uint index = i*32 + l2;
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result[index + 0] = (((vi & 0xf) | vh0) - 16)*d;
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result[index + 1] = (((vi >> 4) | vh1) - 16)*d;
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}
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constant uint QK5_1 = 32;
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struct block_q5_1
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{
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ushort d;
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ushort m;
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uint qh;
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uchar qs[16];
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half d;
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half m;
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uint32_t qh;
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uint8_t qs[QK5_1 / 2];
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};
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__kernel void dequantize_row_q5_1(__global struct block_q5_1* blocks, __global float* result) {
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const uint i = get_global_id(0) / 32;
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const uint l = get_local_id(0);
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const float d = vload_half(0, (__global half*) &blocks[i].d);
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const float m = vload_half(0, (__global half*) &blocks[i].m);
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const uchar vi = blocks[i].qs[l];
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const uint l2 = l * 2;
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const uchar vh0 = ((blocks[i].qh & (1 << (l2 + 0))) >> (l2 + 0)) << 4;
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const uchar vh1 = ((blocks[i].qh & (1 << (l2 + 1))) >> (l2 + 1)) << 4;
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const uint index = i*32 + l2;
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result[index + 0] = ((vi & 0xf) | vh0)*d + m;
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result[index + 1] = ((vi >> 4) | vh1)*d + m;
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}
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constant uint QK8_0 = 32;
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struct block_q8_0
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{
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float d;
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char qs[32];
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uint8_t qs[QK8_0];
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};
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__kernel void dequantize_row_q8_0(__global struct block_q8_0* blocks, __global float* result) {
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const uint i = get_global_id(0) / 32;
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const uint l = get_local_id(0);
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result[i*32 + l] = blocks[i].qs[l] * blocks[i].d;
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__kernel void dequantize_row_q4_0(__global struct block_q4_0* x, __global float* y) {
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constant uint qk = QK4_0;
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const uint i = get_global_id(0) / qk;
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const uint j = get_local_id(0);
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const float d = x[i].d;
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const int x0 = (x[i].qs[j] & 0xf) - 8;
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const int x1 = (x[i].qs[j] >> 4) - 8;
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y[i*qk + j + 0 ] = x0*d;
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y[i*qk + j + qk/2] = x1*d;
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}
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__kernel void dequantize_row_q4_1(__global struct block_q4_1* x, __global float* y) {
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constant uint qk = QK4_1;
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const uint i = get_global_id(0) / qk;
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const uint j = get_local_id(0);
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const float d = x[i].d;
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const float m = x[i].m;
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const int x0 = (x[i].qs[j] & 0xf);
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const int x1 = (x[i].qs[j] >> 4);
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y[i*qk + j + 0 ] = x0*d + m;
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y[i*qk + j + qk/2] = x1*d + m;
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}
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__kernel void dequantize_row_q5_0(__global struct block_q5_0* x, __global float* y) {
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constant uint qk = QK5_0;
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const uint i = get_global_id(0) / qk;
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const uint j = get_local_id(0);
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const float d = vload_half(0, (__global half*) &x[i].d);
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uint32_t qh = x[i].qh;
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const uint8_t xh_0 = ((qh >> (j + 0)) << 4) & 0x10;
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const uint8_t xh_1 = ((qh >> (j + 12)) ) & 0x10;
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const int32_t x0 = ((x[i].qs[j] & 0xf) | xh_0) - 16;
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const int32_t x1 = ((x[i].qs[j] >> 4) | xh_1) - 16;
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y[i*qk + j + 0 ] = x0*d;
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y[i*qk + j + qk/2] = x1*d;
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}
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__kernel void dequantize_row_q5_1(__global struct block_q5_1* x, __global float* y) {
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constant uint qk = QK5_1;
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const uint i = get_global_id(0) / qk;
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const uint j = get_local_id(0);
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const float d = vload_half(0, (__global half*) &x[i].d);
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const float m = vload_half(0, (__global half*) &x[i].m);
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uint32_t qh = x[i].qh;
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const uint8_t xh_0 = ((qh >> (j + 0)) << 4) & 0x10;
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const uint8_t xh_1 = ((qh >> (j + 12)) ) & 0x10;
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const int x0 = (x[i].qs[j] & 0xf) | xh_0;
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const int x1 = (x[i].qs[j] >> 4) | xh_1;
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y[i*qk + j + 0 ] = x0*d + m;
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y[i*qk + j + qk/2] = x1*d + m;
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}
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__kernel void dequantize_row_q8_0(__global struct block_q8_0* x, __global float* y) {
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constant uint qk = QK8_0;
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const uint i = get_global_id(0) / qk;
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const uint j = get_local_id(0);
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const float d = x[i].d;
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y[i*qk + j] = x[i].qs[j]*d;
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}
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);
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@ -128,20 +148,6 @@ __kernel void dequantize_row_q8_0(__global struct block_q8_0* blocks, __global f
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} \
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} while (0)
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#define QK5_0 32
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typedef struct {
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ggml_fp16_t d; // delta
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uint8_t qh[4]; // 5-th bit of quants
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uint8_t qs[QK5_0 / 2]; // nibbles / quants
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} block_q5_0;
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typedef struct {
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float d; // delta
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uint32_t qh; // 5-th bit of quants
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uint8_t qs[QK5_0 / 2]; // nibbles / quants
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} cl_block_q5_0;
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static cl_platform_id platform;
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static cl_device_id device;
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static cl_context context;
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@ -252,7 +258,6 @@ void ggml_cl_sgemm_wrapper(
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cl_kernel kernel;
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size_t global = n * k, local, size_qb;
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bool dequant;
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cl_block_q5_0* cl_host_b;
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switch (btype) {
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case GGML_TYPE_F32:
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@ -274,18 +279,7 @@ void ggml_cl_sgemm_wrapper(
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dequant = true;
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kernel = kernel_q5_0;
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local = 16;
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// For some reason OpenCL seems to be incapable of working with structs of size 22.
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// 20 and 24 bytes are fine. Workaround to do the fp16 to fp32 step on CPU...
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// TODO Find the reason, fix and remove workaround.
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const block_q5_0* b = (const block_q5_0*) host_b;
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cl_host_b = (cl_block_q5_0*) malloc(sizeof(cl_block_q5_0) * global / 32);
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for (size_t i = 0; i < global / 32; i++) {
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cl_host_b[i].d = ggml_fp16_to_fp32(b[i].d);
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memcpy(&cl_host_b[i].qh, b[i].qh, sizeof(uint32_t));
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memcpy(&cl_host_b[i].qs, b[i].qs, QK5_0 / 2);
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}
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host_b = (const float*) cl_host_b;
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size_qb = global * (sizeof(float) + sizeof(uint32_t) + local) / 32;
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size_qb = global * (sizeof(ggml_fp16_t) + sizeof(uint32_t) + local) / 32;
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break;
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case GGML_TYPE_Q5_1:
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dequant = true;
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@ -364,7 +358,4 @@ void ggml_cl_sgemm_wrapper(
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clWaitForEvents(1, &ev_c);
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clReleaseEvent(ev_sgemm);
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clReleaseEvent(ev_c);
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if (btype == GGML_TYPE_Q5_0) {
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free((void*) cl_host_b);
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}
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}
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