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167 lines
6.2 KiB
167 lines
6.2 KiB
/* 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/fluid/operators/math/detail/activation_functions.h"
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#include "paddle/fluid/platform/hostdevice.h"
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// TODO(guosheng): refine code style in gru_kernel
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namespace paddle {
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namespace operators {
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namespace math {
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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, T *value_reset_gate,
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T *prev_out, T *value_reset_output,
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ActivationType act_gate) {
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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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*value_reset_output = (*prev_out) * (*value_reset_gate);
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}
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#ifndef __NVCC__
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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, __m256 *prev_out,
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__m256 *value_reset_output,
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ActivationType act_gate) {
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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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*value_reset_output = _mm256_mul_ps(*prev_out, *value_reset_gate);
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}
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#endif
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#endif
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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, T *value_frame_state,
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T *prev_out, T *value_output,
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ActivationType act_input) {
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*value_frame_state = activation(*value_frame_state, act_input);
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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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#ifndef __NVCC__
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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, __m256 *prev_out,
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__m256 *value_output, ActivationType act_input) {
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*value_frame_state = activation(*value_frame_state, act_input);
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*value_output = _mm256_add_ps(
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_mm256_sub_ps(*prev_out, _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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#endif
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#endif
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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, T *grad_update_gate,
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T *value_frame_state, T *grad_frame_state,
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T *value_prev_out, T *grad_prev_out,
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T *grad_output, ActivationType act_input) {
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*grad_update_gate = (*grad_output * (*value_frame_state));
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*grad_update_gate -= (*grad_output * (*value_prev_out));
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*grad_prev_out -= (*grad_output * (*value_update_gate));
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*grad_prev_out += *grad_output;
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*grad_frame_state = activation(*grad_output * (*value_update_gate),
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*value_frame_state, act_input);
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}
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#ifndef __NVCC__
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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, __m256 *value_prev_out,
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__m256 *grad_prev_out, __m256 *grad_output,
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ActivationType act_input) {
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*grad_update_gate = _mm256_mul_ps(*grad_output, *value_frame_state);
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*grad_update_gate = _mm256_sub_ps(
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*grad_update_gate, _mm256_mul_ps(*grad_output, *value_prev_out));
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*grad_prev_out = _mm256_add_ps(
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_mm256_sub_ps(*grad_prev_out,
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_mm256_mul_ps(*grad_output, *value_update_gate)),
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*grad_output);
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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, act_input);
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}
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#endif
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#endif
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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, T *grad_update_gate,
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T *value_reset_gate, T *grad_reset_gate,
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T *value_prev_out, T *grad_prev_out,
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T *grad_reset_output, 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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#ifndef __NVCC__
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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, __m256 *value_reset_gate,
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__m256 *grad_reset_gate, __m256 *value_prev_out,
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__m256 *grad_prev_out, __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
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};
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} // namespace backward
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} // namespace detail
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} // namespace math
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} // namespace operators
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} // namespace paddle
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