mirror of
https://github.com/ggerganov/llama.cpp.git
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ggml : use OpenMP as a thread pool (#7606)
* ggml: Added OpenMP for multi-threads processing * ggml : Limit the number of threads used to avoid deadlock * update shared state n_threads in parallel region * clear numa affinity for main thread even with openmp * enable openmp by default * fix msvc build * disable openmp on macos * ci : disable openmp with thread sanitizer * Update ggml.c Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> --------- Co-authored-by: slaren <slarengh@gmail.com> Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
This commit is contained in:
Masaya, Kato
GitHub
parent
0b832d53ba
commit
a5735e4426
10
.github/workflows/build.yml
vendored
10
.github/workflows/build.yml
vendored
@ -294,12 +294,22 @@ jobs:
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- name: Build
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id: cmake_build
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if: ${{ matrix.sanitizer != 'THREAD' }}
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run: |
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mkdir build
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cd build
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cmake .. -DLLAMA_FATAL_WARNINGS=ON -DLLAMA_SANITIZE_${{ matrix.sanitizer }}=ON -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
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cmake --build . --config ${{ matrix.build_type }} -j $(nproc)
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- name: Build (no OpenMP)
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id: cmake_build_no_openmp
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if: ${{ matrix.sanitizer == 'THREAD' }}
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run: |
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mkdir build
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cd build
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cmake .. -DLLAMA_FATAL_WARNINGS=ON -DLLAMA_SANITIZE_${{ matrix.sanitizer }}=ON -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -DLLAMA_OPENMP=OFF
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cmake --build . --config ${{ matrix.build_type }} -j $(nproc)
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- name: Test
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id: cmake_test
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run: |
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@ -126,6 +126,7 @@ set(LLAMA_METAL_MACOSX_VERSION_MIN "" CACHE STRING
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set(LLAMA_METAL_STD "" CACHE STRING "llama: metal standard version (-std flag)")
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option(LLAMA_KOMPUTE "llama: use Kompute" OFF)
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option(LLAMA_RPC "llama: use RPC" OFF)
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option(LLAMA_OPENMP "llama: use OpenMP" ON)
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option(LLAMA_SYCL "llama: use SYCL" OFF)
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option(LLAMA_SYCL_F16 "llama: use 16 bit floats for sycl calculations" OFF)
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set(LLAMA_SYCL_TARGET "INTEL" CACHE STRING "llama: sycl target device")
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@ -296,6 +297,17 @@ if (LLAMA_METAL)
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)
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endif()
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if (LLAMA_OPENMP)
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find_package(OpenMP)
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if (OpenMP_FOUND)
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message(STATUS "OpenMP found")
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add_compile_definitions(GGML_USE_OPENMP)
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set(LLAMA_EXTRA_LIBS ${LLAMA_EXTRA_LIBS} OpenMP::OpenMP_C OpenMP::OpenMP_CXX)
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else()
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message(WARNING "OpenMP not found")
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endif()
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endif()
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if (LLAMA_BLAS)
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if (LLAMA_STATIC)
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set(BLA_STATIC ON)
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8
Makefile
8
Makefile
@ -57,6 +57,8 @@ ifeq ($(UNAME_S),Darwin)
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LLAMA_METAL := 1
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endif
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LLAMA_NO_OPENMP := 1
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ifneq ($(UNAME_P),arm)
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SYSCTL_M := $(shell sysctl -n hw.optional.arm64 2>/dev/null)
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ifeq ($(SYSCTL_M),1)
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@ -405,6 +407,12 @@ ifndef LLAMA_NO_ACCELERATE
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endif
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endif # LLAMA_NO_ACCELERATE
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ifndef LLAMA_NO_OPENMP
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MK_CPPFLAGS += -DGGML_USE_OPENMP
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MK_CFLAGS += -fopenmp
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MK_CXXFLAGS += -fopenmp
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endif # LLAMA_NO_OPENMP
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ifdef LLAMA_OPENBLAS
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MK_CPPFLAGS += -DGGML_USE_OPENBLAS $(shell pkg-config --cflags-only-I openblas)
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MK_CFLAGS += $(shell pkg-config --cflags-only-other openblas)
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111
ggml.c
111
ggml.c
@ -5,6 +5,7 @@
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#include "ggml-quants.h"
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#include "ggml.h"
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#if defined(_MSC_VER) || defined(__MINGW32__)
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#include <malloc.h> // using malloc.h with MSC/MINGW
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#elif !defined(__FreeBSD__) && !defined(__NetBSD__) && !defined(__OpenBSD__)
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@ -28,6 +29,10 @@
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#include <syscall.h>
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#endif
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#ifdef GGML_USE_OPENMP
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#include <omp.h>
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#endif
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#ifdef GGML_USE_METAL
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#include <unistd.h>
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#endif
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@ -1756,7 +1761,7 @@ struct ggml_compute_state_shared {
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int64_t perf_node_start_cycles;
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int64_t perf_node_start_time_us;
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const int n_threads;
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int n_threads;
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// synchronization primitives
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atomic_int n_active; // num active threads
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@ -19670,6 +19675,59 @@ struct ggml_cplan ggml_graph_plan(const struct ggml_cgraph * cgraph, int n_threa
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return cplan;
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}
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static enum ggml_status ggml_graph_compute_parallel(struct ggml_compute_state * workers, int n_threads) {
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enum ggml_status compute_status = GGML_STATUS_SUCCESS;
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#ifdef GGML_USE_OPENMP
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if (n_threads > 1) {
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#pragma omp parallel num_threads(n_threads)
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{
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#pragma omp single
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{
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// update the number of threads from the actual number of threads that we got from OpenMP
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n_threads = omp_get_num_threads();
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workers[0].shared->n_threads = n_threads;
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workers[0].shared->n_active = n_threads;
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}
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ggml_graph_compute_thread(&workers[omp_get_thread_num()]);
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}
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} else {
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ggml_graph_compute_thread(&workers[0]);
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}
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#else
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// create thread pool
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if (n_threads > 1) {
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for (int j = 1; j < n_threads; ++j) {
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const int rc = ggml_thread_create(&workers[j].thrd, NULL, ggml_graph_compute_thread, &workers[j]);
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GGML_ASSERT(rc == 0);
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UNUSED(rc);
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}
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}
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// this is a work thread too
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ggml_graph_compute_thread(&workers[0]);
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// join or kill thread pool
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if (n_threads > 1) {
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for (int j = 1; j < n_threads; j++) {
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const int rc = ggml_thread_join(workers[j].thrd, NULL);
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GGML_ASSERT(rc == 0);
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UNUSED(rc);
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}
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}
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#endif
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// don't leave affinity set on the main thread
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clear_numa_thread_affinity();
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for (int j = 0; j < n_threads; j++) {
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if (workers[j].ec != GGML_STATUS_SUCCESS) {
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compute_status = workers[j].ec;
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break;
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}
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}
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return compute_status;
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}
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enum ggml_status ggml_graph_compute(struct ggml_cgraph * cgraph, struct ggml_cplan * cplan) {
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{
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GGML_ASSERT(cplan);
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@ -19680,7 +19738,11 @@ enum ggml_status ggml_graph_compute(struct ggml_cgraph * cgraph, struct ggml_cpl
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}
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}
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const int n_threads = cplan->n_threads;
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int n_threads = cplan->n_threads;
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#if defined(GGML_USE_OPENMP)
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n_threads = MIN(n_threads, omp_get_max_threads());
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#endif
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struct ggml_compute_state_shared state_shared = {
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/*.cgraph =*/ cgraph,
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@ -19696,47 +19758,20 @@ enum ggml_status ggml_graph_compute(struct ggml_cgraph * cgraph, struct ggml_cpl
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/*.current_chunk; =*/ 0,
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};
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struct ggml_compute_state * workers = alloca(sizeof(struct ggml_compute_state)*n_threads);
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// create thread pool
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if (n_threads > 1) {
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for (int j = 1; j < n_threads; ++j) {
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workers[j] = (struct ggml_compute_state) {
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.thrd = 0,
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.ith = j,
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.shared = &state_shared,
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.ec = GGML_STATUS_SUCCESS,
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};
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const int rc = ggml_thread_create(&workers[j].thrd, NULL, ggml_graph_compute_thread, &workers[j]);
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GGML_ASSERT(rc == 0);
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UNUSED(rc);
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}
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}
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workers[0].ith = 0;
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workers[0].shared = &state_shared;
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workers[0].ec = GGML_STATUS_SUCCESS;
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const int64_t perf_start_cycles = ggml_perf_cycles();
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const int64_t perf_start_time_us = ggml_perf_time_us();
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// this is a work thread too
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ggml_graph_compute_thread(&workers[0]);
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enum ggml_status compute_status = workers[0].ec;
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// don't leave affinity set on the main thread
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clear_numa_thread_affinity();
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// join or kill thread pool
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if (n_threads > 1) {
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for (int j = 1; j < n_threads; j++) {
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const int rc = ggml_thread_join(workers[j].thrd, NULL);
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GGML_ASSERT(rc == 0);
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if (workers[j].ec != GGML_STATUS_SUCCESS)
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compute_status = workers[j].ec;
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}
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for (int j = 0; j < n_threads; ++j) {
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workers[j] = (struct ggml_compute_state) {
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.thrd = 0,
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.ith = j,
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.shared = &state_shared,
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.ec = GGML_STATUS_SUCCESS,
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};
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}
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enum ggml_status compute_status = ggml_graph_compute_parallel(workers, n_threads);
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// performance stats (graph)
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{
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int64_t perf_cycles_cur = ggml_perf_cycles() - perf_start_cycles;
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