wehub-resource-sync
111 lines
3.3 KiB
C++
111 lines
3.3 KiB
C++
/* Copyright (c) 2022 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 <string>
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#include <vector>
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#include "paddle/phi/kernels/funcs/math_function.h"
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namespace phi {
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#define CUDA_NUM_THREADS 1024
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inline static int64_t PADDLE_GET_BLOCKS(const int64_t N) {
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return (N + CUDA_NUM_THREADS - 1) / CUDA_NUM_THREADS;
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}
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template <typename T>
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struct PReluChannelFirstWiseCUDAFunctor {
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const T* x_;
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const T* alpha_;
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size_t channel_num_;
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size_t plane_size_;
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int64_t numel_;
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HOSTDEVICE inline PReluChannelFirstWiseCUDAFunctor(const T* x,
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const T* alpha,
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int64_t numel,
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size_t channel_num,
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size_t plane_size)
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: x_(x),
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alpha_(alpha),
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numel_(numel),
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channel_num_(channel_num),
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plane_size_(plane_size) {}
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HOSTDEVICE inline T operator()(const int64_t n) const {
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T zero = static_cast<T>(0);
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size_t temp = n / plane_size_;
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size_t channel_index = temp % channel_num_;
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T scale = alpha_[channel_index];
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T x = x_[n];
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return (x > zero) ? x : scale * x;
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}
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};
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template <typename T>
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struct PReluChannelLastWiseCUDAFunctor {
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const T* x_;
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const T* alpha_;
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size_t channel_num_;
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HOSTDEVICE inline PReluChannelLastWiseCUDAFunctor(const T* x,
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const T* alpha,
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size_t channel_num)
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: x_(x), alpha_(alpha), channel_num_(channel_num) {}
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HOSTDEVICE inline T operator()(const int64_t n) const {
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T zero = static_cast<T>(0);
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size_t channel_index = n % channel_num_;
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T scale = alpha_[channel_index];
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T x = x_[n];
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return (x > zero) ? x : scale * x;
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}
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};
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template <typename T>
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struct PreluElementWiseDirectCUDAFunctor {
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const T* x_;
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const T* alpha_;
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size_t spatial_size_;
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HOSTDEVICE inline PreluElementWiseDirectCUDAFunctor(const T* x,
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const T* alpha,
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size_t spatial_size)
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: x_(x), alpha_(alpha), spatial_size_(spatial_size) {}
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HOSTDEVICE inline T operator()(const int64_t n) const {
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T zero = static_cast<T>(0);
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size_t element_index = n % spatial_size_;
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T scale = alpha_[element_index];
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T x = x_[n];
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return (x > zero) ? x : scale * x;
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}
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};
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template <typename T>
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struct PreluScalarDirectCUDAFunctor {
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const T* scalar_;
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HOSTDEVICE inline PreluScalarDirectCUDAFunctor(const T* scalar)
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: scalar_(scalar) {}
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HOSTDEVICE inline T operator()(const T x) const {
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T zero = static_cast<T>(0);
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return (x > zero) ? x : scalar_[0] * x;
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}
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};
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} // namespace phi
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