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Differential Revision: D60867909 Pull Request resolved: #774
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| Original file line number | Diff line number | Diff line change |
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| // Copyright (c) Meta Platforms, Inc. and affiliates. | ||
| // All rights reserved. | ||
| // | ||
| // This source code is licensed under the license found in the | ||
| // LICENSE file in the root directory of this source tree. | ||
|
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| #pragma once | ||
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| #ifdef TORCHAO_PARALLEL_ATEN | ||
| #pragma message("TORCHAO_PARALLEL_ATEN is set. Using ATen parallel backend.") | ||
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| // TODO(T200106949): reconcile at::parallel_for's grain_size with what is needed | ||
| // in torchao::parallel_for | ||
| #error "TORCHAO_PARALLEL_ATEN is not implemented yet" | ||
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| #else | ||
| #ifdef TORCHAO_PARALLEL_EXECUTORCH | ||
| #pragma message( \ | ||
| "TORCHAO_PARALLEL_EXECUTORCH is set. Using ExecuTorch parallel backend.") | ||
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| #error "TORCHAO_PARALLEL_EXECUTORCH is not implemented yet" | ||
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| #else | ||
| #ifdef TORCHAO_PARALLEL_PTHREADPOOL | ||
| #pragma message( \ | ||
| "TORCHAO_PARALLEL_PTHREADPOOL is set. Using pthreadpool parallel backend.") | ||
| #include <torchao/experimental/kernels/cpu/parallel-pthreadpool-impl.h> | ||
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| #else | ||
| #ifdef TORCHAO_PARALLEL_OMP | ||
| #pragma message("TORCHAO_PARALLEL_OMP is set. Using OMP parallel backend.") | ||
| #include <torchao/experimental/kernels/cpu/parallel-omp-impl.h> | ||
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| #else | ||
| #if defined TORCHAO_PARALLEL_SINGLE_THREADED | ||
| #pragma message( \ | ||
| "TORCHAO_PARALLEL_SINGLE_THREADED is set. Using single-threaded parallel backend.") | ||
| #include <torchao/experimental/kernels/cpu/parallel-single_threaded-impl.h> | ||
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| #else | ||
| #if defined TORCHAO_PARALLEL_TEST_DUMMY | ||
| #pragma message( \ | ||
| "TORCHAO_PARALLEL_TEST_DUMMY is set. Using test dummy parallel backend.") | ||
| #include <torchao/experimental/kernels/cpu/parallel-test_dummy-impl.h> | ||
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| #else | ||
| #error \ | ||
| "Set parallel backend by defining one of the following: \ | ||
| TORCHAO_PARALLEL_ATEN, \ | ||
| TORCHAO_PARALLEL_EXECUTORCH, \ | ||
| TORCHAO_PARALLEL_PTHREADPOOL, \ | ||
| TORCHAO_PARALLEL_OMP, \ | ||
| TORCHAO_PARALLEL_SINGLE_THREADED, \ | ||
| TORCHAO_PARALLEL_TEST_DUMMY" | ||
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| #endif // TORCHAO_PARALLEL_TEST_DUMMY | ||
| #endif // TORCHAO_PARALLEL_SINGLE_THREADED | ||
| #endif // TORCHAO_PARALLEL_OMP | ||
| #endif // TORCHAO_PARALLEL_PTHREADPOOL | ||
| #endif // TORCHAO_PARALLEL_EXECUTORCH | ||
| #endif // TORCHAO_PARALLEL_ATEN |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| // Copyright (c) Meta Platforms, Inc. and affiliates. | ||
| // All rights reserved. | ||
| // | ||
| // This source code is licensed under the license found in the | ||
| // LICENSE file in the root directory of this source tree. | ||
|
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| #pragma once | ||
| #include <omp.h> | ||
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| template <typename F> | ||
| void torchao::parallel_for( | ||
| const int64_t begin, | ||
| const int64_t end, | ||
| const int64_t grain_size, | ||
| const F& f) { | ||
| #pragma omp parallel | ||
| { | ||
| #pragma omp for | ||
| for (int i = begin; i < end; i += grain_size) { | ||
| f(i, i + grain_size); | ||
| } | ||
| } | ||
| } | ||
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| void torchao::set_num_threads(int num_threads) { | ||
| omp_set_num_threads(num_threads); | ||
| } | ||
| int torchao::get_num_threads() { | ||
| // omp_get_num_threads returns the number of threads | ||
| // in the current code section, which will be 1 in the routines | ||
| // that select tiling params | ||
| return omp_get_max_threads(); | ||
| } |
83 changes: 83 additions & 0 deletions
83
torchao/experimental/kernels/cpu/parallel-pthreadpool-impl.h
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| // Copyright (c) Meta Platforms, Inc. and affiliates. | ||
| // All rights reserved. | ||
| // | ||
| // This source code is licensed under the license found in the | ||
| // LICENSE file in the root directory of this source tree. | ||
|
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| #pragma once | ||
| #include <pthreadpool.h> | ||
| #include <stdexcept> | ||
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| namespace torchao::parallel::internal { | ||
| class Threadpool { | ||
| private: | ||
| pthreadpool_t pthreadpool_{nullptr}; | ||
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| public: | ||
| Threadpool(size_t num_threads = 0) { | ||
| pthreadpool_ = pthreadpool_create(num_threads); | ||
| if (pthreadpool_ == nullptr) { | ||
| throw std::runtime_error("Failed to create pthreadpool."); | ||
| } | ||
| } | ||
| ~Threadpool() { | ||
| pthreadpool_destroy(pthreadpool_); | ||
| pthreadpool_ = nullptr; | ||
| } | ||
| pthreadpool_t get() { | ||
| return pthreadpool_; | ||
| } | ||
| size_t get_num_threads() { | ||
| if (pthreadpool_ == nullptr) { | ||
| return 0; | ||
| } | ||
| return pthreadpool_get_threads_count(pthreadpool_); | ||
| } | ||
| void set_num_threads(size_t num_threads) { | ||
| if (num_threads == get_num_threads()) { | ||
| return; | ||
| } | ||
| pthreadpool_destroy(pthreadpool_); | ||
| pthreadpool_ = pthreadpool_create(num_threads); | ||
| } | ||
| }; | ||
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| template <typename F> | ||
| struct Context { | ||
| const F& f; | ||
| int grain_size; | ||
| Context(const F& f, int grain_size) : f{f}, grain_size{grain_size} {} | ||
| }; | ||
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| template <typename F> | ||
| static void task(Context<F>* context, size_t grain_idx) { | ||
| int i = grain_idx * context->grain_size; | ||
| context->f(i, i + context->grain_size); | ||
| } | ||
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| static Threadpool threadpool; | ||
| } // namespace torchao::parallel::internal | ||
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| int torchao::get_num_threads() { | ||
| return torchao::parallel::internal::threadpool.get_num_threads(); | ||
| } | ||
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| void torchao::set_num_threads(int num_threads) { | ||
| torchao::parallel::internal::threadpool.set_num_threads(num_threads); | ||
| } | ||
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| template <typename F> | ||
| void torchao::parallel_for( | ||
| const int64_t begin, | ||
| const int64_t end, | ||
| const int64_t grain_size, | ||
| const F& f) { | ||
| int grain_idx_end = end / grain_size; | ||
| auto context = torchao::parallel::internal::Context<F>(f, grain_size); | ||
| pthreadpool_parallelize_1d( | ||
| torchao::parallel::internal::threadpool.get(), | ||
| (pthreadpool_task_1d_t)torchao::parallel::internal::task<F>, | ||
| (void**)&context, | ||
| grain_idx_end, | ||
| 0 /* flags */); | ||
| } |
23 changes: 23 additions & 0 deletions
23
torchao/experimental/kernels/cpu/parallel-single_threaded-impl.h
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| // Copyright (c) Meta Platforms, Inc. and affiliates. | ||
| // All rights reserved. | ||
| // | ||
| // This source code is licensed under the license found in the | ||
| // LICENSE file in the root directory of this source tree. | ||
|
|
||
| #pragma once | ||
|
|
||
| template <typename F> | ||
| void torchao::parallel_for( | ||
| const int64_t begin, | ||
| const int64_t end, | ||
| const int64_t grain_size, | ||
| const F& f) { | ||
| for (int i = begin; i < end; i += grain_size) { | ||
| f(i, i + grain_size); | ||
| } | ||
| } | ||
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| void torchao::set_num_threads(int num_threads) {} | ||
| int torchao::get_num_threads() { | ||
| return 1; | ||
| } |
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