wehub-resource-sync
314 lines
12 KiB
C++
314 lines
12 KiB
C++
/* Copyright (c) 2016 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 <type_traits>
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#include "paddle/common/hostdevice.h"
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#include "paddle/phi/kernels/funcs/detail/activation_functions.h"
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// TODO(guosheng): refine code style in gru_kernel
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namespace phi {
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namespace funcs {
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namespace detail {
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namespace forward {
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template <typename T>
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class gru_resetOutput {
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public:
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HOSTDEVICE void operator()(T *value_update_gate,
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T *value_reset_gate,
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T *prev_out,
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T *value_reset_output,
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ActivationType act_gate,
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T *value_reset_bias = nullptr,
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bool old_version = true) {
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*value_update_gate = activation(*value_update_gate, act_gate);
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*value_reset_gate = activation(*value_reset_gate, act_gate);
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if (old_version) {
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*value_reset_output = (*prev_out) * (*value_reset_gate);
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} else {
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*value_reset_output =
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(*value_reset_output + *value_reset_bias) * (*value_reset_gate);
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}
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}
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#if !defined(__NVCC__) && !defined(__HIPCC___) // @{ Group GRU reset output
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#ifndef __AVX__
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static const bool avx = false;
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#else
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static const bool avx = true;
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HOSTDEVICE void operator()(__m256 *value_update_gate,
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__m256 *value_reset_gate,
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__m256 *prev_out,
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__m256 *value_reset_output,
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ActivationType act_gate,
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__m256 *value_reset_bias = nullptr,
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bool old_version = true) {
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*value_update_gate = activation(*value_update_gate, act_gate);
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*value_reset_gate = activation(*value_reset_gate, act_gate);
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if (old_version) {
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*value_reset_output = _mm256_mul_ps(*prev_out, *value_reset_gate);
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} else {
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*value_reset_output =
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_mm256_add_ps(*value_reset_output, *value_reset_bias);
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*value_reset_output =
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_mm256_mul_ps(*value_reset_output, *value_reset_gate);
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}
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}
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#endif
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#endif // @} End Group GRU reset output
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};
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template <typename T>
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class gru_finalOutput {
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public:
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HOSTDEVICE void operator()(T *value_update_gate,
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T *value_frame_state,
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T *prev_out,
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T *value_output,
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ActivationType act_input,
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bool origin_mode) {
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*value_frame_state = activation(*value_frame_state, act_input);
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if (origin_mode) {
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*value_output = ((*value_update_gate) * (*prev_out)) +
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*value_frame_state -
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((*value_update_gate) * (*value_frame_state));
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} else {
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*value_output = *prev_out - ((*value_update_gate) * (*prev_out)) +
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((*value_update_gate) * (*value_frame_state));
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}
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}
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#if !defined(__NVCC__) && !defined(__HIPCC___) // @{ Group GRU final output
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#ifndef __AVX__
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static const bool avx = false;
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#else
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static const bool avx = true;
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HOSTDEVICE void operator()(__m256 *value_update_gate,
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__m256 *value_frame_state,
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__m256 *prev_out,
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__m256 *value_output,
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ActivationType act_input,
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bool origin_mode) {
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*value_frame_state = activation(*value_frame_state, act_input);
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if (origin_mode) {
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*value_output = _mm256_sub_ps(
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_mm256_add_ps(_mm256_mul_ps(*value_update_gate, *prev_out),
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*value_frame_state),
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_mm256_mul_ps(*value_update_gate, *value_frame_state));
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} else {
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*value_output = _mm256_add_ps(
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_mm256_sub_ps(*prev_out,
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_mm256_mul_ps(*value_update_gate, *prev_out)),
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_mm256_mul_ps(*value_update_gate, *value_frame_state));
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}
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}
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#endif
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#endif // @} End Group GRU final output
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};
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} // namespace forward
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namespace backward {
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template <typename T>
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class gru_stateGrad {
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public:
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HOSTDEVICE void operator()(T *value_update_gate,
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T *grad_update_gate,
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T *value_frame_state,
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T *grad_frame_state,
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T *value_prev_out,
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T *grad_prev_out,
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T *grad_output,
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ActivationType act_input,
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bool origin_mode) {
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if (origin_mode) {
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*grad_update_gate =
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(*grad_output) * ((*value_prev_out) - (*value_frame_state));
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*grad_prev_out += (*grad_output * (*value_update_gate));
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*grad_frame_state = activation(
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*grad_output * (static_cast<T>(1.0) - (*value_update_gate)),
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*value_frame_state,
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act_input);
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} else {
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*grad_update_gate =
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(*grad_output) * ((*value_frame_state) - (*value_prev_out));
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*grad_prev_out +=
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(*grad_output * (static_cast<T>(1.0) - *value_update_gate));
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*grad_frame_state = activation(
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*grad_output * (*value_update_gate), *value_frame_state, act_input);
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}
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}
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#if !defined(__NVCC__) && !defined(__HIPCC___) // @{ Group GRU state grad
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#ifndef __AVX__
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static const bool avx = false;
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#else
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static const bool avx = true;
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HOSTDEVICE void operator()(__m256 *value_update_gate,
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__m256 *grad_update_gate,
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__m256 *value_frame_state,
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__m256 *grad_frame_state,
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__m256 *value_prev_out,
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__m256 *grad_prev_out,
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__m256 *grad_output,
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ActivationType act_input,
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bool origin_mode) {
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if (origin_mode) {
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*grad_update_gate = _mm256_mul_ps(
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*grad_output, _mm256_sub_ps(*value_prev_out, *value_frame_state));
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*grad_prev_out = _mm256_add_ps(
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*grad_prev_out, _mm256_mul_ps(*grad_output, *value_update_gate));
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*grad_frame_state = activation(
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_mm256_mul_ps(
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*grad_output,
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_mm256_sub_ps(_mm256_set1_ps(1.0f), *value_update_gate)),
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*value_frame_state,
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act_input);
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} else {
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*grad_update_gate = _mm256_mul_ps(
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*grad_output, _mm256_sub_ps(*value_frame_state, *value_prev_out));
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*grad_prev_out = _mm256_add_ps(
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*grad_prev_out,
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_mm256_mul_ps(
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*grad_output,
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_mm256_sub_ps(_mm256_set1_ps(1.0f), *value_update_gate)));
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*grad_frame_state =
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activation(_mm256_mul_ps(*grad_output, *value_update_gate),
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*value_frame_state,
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act_input);
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}
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}
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#endif
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#endif // @} End Group GRU state grad
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};
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template <typename T>
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class gru_resetGrad {
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public:
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HOSTDEVICE void operator()(T *value_update_gate,
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T *grad_update_gate,
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T *value_reset_gate,
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T *grad_reset_gate,
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T *value_prev_out,
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T *grad_prev_out,
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T *grad_reset_output,
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ActivationType act_gate) {
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*grad_reset_gate = (*grad_reset_output * (*value_prev_out));
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*grad_prev_out += (*grad_reset_output * (*value_reset_gate));
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*grad_update_gate =
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activation(*grad_update_gate, *value_update_gate, act_gate);
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*grad_reset_gate =
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activation(*grad_reset_gate, *value_reset_gate, act_gate);
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}
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#if !defined(__NVCC__) && !defined(__HIPCC___) // @{ Group GRU reset grad
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#ifndef __AVX__
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static const bool avx = false;
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#else
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static const bool avx = true;
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HOSTDEVICE void operator()(__m256 *value_update_gate,
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__m256 *grad_update_gate,
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__m256 *value_reset_gate,
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__m256 *grad_reset_gate,
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__m256 *value_prev_out,
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__m256 *grad_prev_out,
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__m256 *grad_reset_output,
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ActivationType act_gate) {
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*grad_reset_gate = _mm256_mul_ps(*grad_reset_output, *value_prev_out);
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*grad_prev_out = _mm256_add_ps(
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*grad_prev_out, _mm256_mul_ps(*grad_reset_output, *value_reset_gate));
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*grad_update_gate =
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activation(*grad_update_gate, *value_update_gate, act_gate);
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*grad_reset_gate =
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activation(*grad_reset_gate, *value_reset_gate, act_gate);
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}
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#endif
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#endif // @} End Group GRU reset grad
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};
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template <typename T>
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class gru {
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public:
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HOSTDEVICE void operator()(T *value_reset_gate,
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T *grad_reset_gate,
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T *value_update_gate,
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T *grad_update_gate,
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T *value_frame_state,
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T *grad_frame_state,
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T *value_prev_out,
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T *grad_prev_out,
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T *grad_output,
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T *value_reset_output,
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T *grad_reset_output,
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ActivationType act_node,
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ActivationType act_gate) {
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*grad_update_gate =
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activation((*grad_output) * ((*value_prev_out) - (*value_frame_state)),
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(*value_update_gate),
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act_gate);
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*grad_prev_out += (*grad_output * (*value_update_gate));
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*grad_frame_state =
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activation(*grad_output * (static_cast<T>(1.0) - (*value_update_gate)),
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*value_frame_state,
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act_node);
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T reset_output = (*value_reset_output) / (*value_reset_gate);
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*grad_reset_gate = activation(
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reset_output * (*grad_frame_state), *value_reset_gate, act_gate);
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*grad_reset_output = (*value_reset_gate) * (*grad_frame_state);
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}
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#if !defined(__NVCC__) && !defined(__HIPCC___) // @{ Group GRU CPU
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#ifndef __AVX__
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static const bool avx = false;
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#else
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static const bool avx = true;
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HOSTDEVICE void operator()(__m256 *value_reset_gate,
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__m256 *grad_reset_gate,
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__m256 *value_update_gate,
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__m256 *grad_update_gate,
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__m256 *value_frame_state,
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__m256 *grad_frame_state,
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__m256 *value_prev_out,
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__m256 *grad_prev_out,
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__m256 *grad_output,
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__m256 *value_reset_output,
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__m256 *grad_reset_output,
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ActivationType act_node,
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ActivationType act_gate) {
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*grad_update_gate = activation(
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_mm256_mul_ps(*grad_output,
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_mm256_sub_ps(*value_prev_out, *value_frame_state)),
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*value_update_gate,
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act_gate);
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*grad_prev_out = _mm256_add_ps(
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*grad_prev_out, _mm256_mul_ps(*grad_output, *value_update_gate));
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*grad_frame_state = activation(
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_mm256_mul_ps(*grad_output,
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_mm256_sub_ps(_mm256_set1_ps(1.0f), *value_update_gate)),
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*value_frame_state,
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act_node);
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__m256 reset_output = _mm256_div_ps(*value_reset_output, *value_reset_gate);
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*grad_reset_gate =
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activation(_mm256_mul_ps(reset_output, *grad_frame_state),
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*value_reset_gate,
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act_gate);
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*grad_reset_output = _mm256_mul_ps(*value_reset_gate, *grad_frame_state);
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}
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#endif
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#endif // @} End Group GRU CPU
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};
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} // namespace backward
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} // namespace detail
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} // namespace funcs
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} // namespace phi
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