wehub-resource-sync
71 lines
2.6 KiB
C++
71 lines
2.6 KiB
C++
/* Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#pragma once
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#include <mutex> // NOLINT
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#include "flashattn/include/flash_attn.h"
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#include "paddle/phi/backends/dynload/dynamic_loader.h"
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#include "paddle/phi/common/port.h"
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namespace phi {
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namespace dynload {
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extern std::once_flag flashattn_dso_flag;
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extern void* flashattn_dso_handle;
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#define DYNAMIC_LOAD_FLASHATTN_WRAP(__name) \
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struct DynLoad__##__name { \
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template <typename... Args> \
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auto operator()(Args... args) -> DECLARE_TYPE(__name, args...) { \
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using flashattnFunc = decltype(&::__name); \
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std::call_once(flashattn_dso_flag, []() { \
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flashattn_dso_handle = phi::dynload::GetFlashAttnDsoHandle(); \
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}); \
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static void* p_##__name = dlsym(flashattn_dso_handle, #__name); \
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return reinterpret_cast<flashattnFunc>(p_##__name)(args...); \
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} \
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}; \
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extern DynLoad__##__name __name
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#define DECLARE_DYNAMIC_LOAD_FLASHATTN_WRAP(__name) \
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DYNAMIC_LOAD_FLASHATTN_WRAP(__name)
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#ifdef PADDLE_WITH_HIP
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#define FLASHATTN_ROUTINE_EACH(__macro) \
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__macro(flash_attn_fwd); \
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__macro(flash_attn_varlen_fwd); \
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__macro(flash_attn_bwd); \
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__macro(flash_attn_varlen_bwd); \
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__macro(flash_attn_error);
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#else
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#define FLASHATTN_ROUTINE_EACH(__macro) \
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__macro(flash_attn_fwd); \
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__macro(flash_attn_varlen_fwd); \
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__macro(flash_attn_bwd); \
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__macro(flash_attn_varlen_bwd); \
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__macro(calc_reduced_attn_scores); \
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__macro(flash_attn_fwd_with_bias_and_mask); \
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__macro(flash_attn_bwd_with_bias_and_mask); \
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__macro(flash_attn_error);
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#endif
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FLASHATTN_ROUTINE_EACH(DECLARE_DYNAMIC_LOAD_FLASHATTN_WRAP);
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#undef DYNAMIC_LOAD_FLASHATTN_WRAP
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} // namespace dynload
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} // namespace phi
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