[Speed]implement cudnn sequence softmax cudnn (#8978)
* "add softmax cudnn functor support" * "add testing" * "refine cmakelist" * "sequence softmax forward speed up" * "add softmax grad" * "fix sequence softmax test" * "add double precision' * "fix softmax test" * "add softmax cudnn support" * "fix softmax cudnn test" * "add softmax to nn.py" * "fix compile bug" * "refine cmakelist" * "fix ci" * "fix based on comment" * "fix based on comments" * "fix ci"shanyi15-patch-2
dzhwinter
7 years ago
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GitHub
parent
9b9f3f09b3
commit
128adf53cb
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/* 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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#include "paddle/fluid/framework/op_registry.h"
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#include "paddle/fluid/operators/math/math_function.h"
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#include "paddle/fluid/operators/math/softmax.h"
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namespace paddle {
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namespace operators {
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using Tensor = framework::Tensor;
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using LoDTensor = framework::LoDTensor;
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template <typename T>
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class SequenceSoftmaxCUDNNKernel : public framework::OpKernel<T> {
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public:
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void Compute(const framework::ExecutionContext& ctx) const override {
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auto* x = ctx.Input<LoDTensor>("X");
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auto* out = ctx.Output<LoDTensor>("Out");
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auto lod = x->lod();
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auto dims = x->dims();
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const size_t level = lod.size() - 1;
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PADDLE_ENFORCE_EQ(dims[0], static_cast<int64_t>(lod[level].back()),
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"The first dimension of Input(X) should be equal to the "
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"sum of all sequences' lengths.");
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PADDLE_ENFORCE_EQ(dims[0], x->numel(),
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"The width of each timestep in Input(X) of "
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"SequenceSoftmaxOp should be 1.");
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out->mutable_data<T>(ctx.GetPlace());
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for (int i = 0; i < static_cast<int>(lod[level].size()) - 1; ++i) {
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int start_pos = static_cast<int>(lod[level][i]);
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int end_pos = static_cast<int>(lod[level][i + 1]);
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Tensor x_i = x->Slice(start_pos, end_pos);
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Tensor out_i = out->Slice(start_pos, end_pos);
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// Reshape from (end_pos - start_pos) x 1UL to 1UL x (end_pos - start_pos)
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framework::DDim dims_i =
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// framework::make_ddim({1UL, end_pos - start_pos, 1UL, 1UL});
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framework::make_ddim({1UL, end_pos - start_pos});
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x_i.Resize(dims_i);
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out_i.Resize(dims_i);
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math::SoftmaxCUDNNFunctor<T>()(
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ctx.template device_context<platform::CUDADeviceContext>(), &x_i,
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&out_i);
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}
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}
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};
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template <typename T>
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class SequenceSoftmaxGradCUDNNKernel : public framework::OpKernel<T> {
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public:
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void Compute(const framework::ExecutionContext& ctx) const override {
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auto* out = ctx.Input<LoDTensor>("Out");
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auto* out_grad = ctx.Input<LoDTensor>(framework::GradVarName("Out"));
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auto* x = ctx.Input<LoDTensor>("X");
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auto* x_grad = ctx.Output<LoDTensor>(framework::GradVarName("X"));
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auto lod = x->lod();
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const size_t level = lod.size() - 1;
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x_grad->mutable_data<T>(ctx.GetPlace());
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for (int i = 0; i < static_cast<int>(lod[level].size()) - 1; ++i) {
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int start_pos = static_cast<int>(lod[level][i]);
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int end_pos = static_cast<int>(lod[level][i + 1]);
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Tensor out_i = out->Slice(start_pos, end_pos);
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Tensor out_grad_i = out_grad->Slice(start_pos, end_pos);
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Tensor x_grad_i = x_grad->Slice(start_pos, end_pos);
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// Reshape from (end_pos - start_pos) x 1UL to 1UL x (end_pos - start_pos)
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framework::DDim dims_i = framework::make_ddim({1UL, end_pos - start_pos});
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out_i.Resize(dims_i);
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out_grad_i.Resize(dims_i);
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x_grad_i.Resize(dims_i);
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math::SoftmaxGradCUDNNFunctor<T>()(
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ctx.template device_context<platform::CUDADeviceContext>(), &out_i,
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&out_grad_i, &x_grad_i);
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}
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}
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};
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} // namespace operators
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} // namespace paddle
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namespace ops = paddle::operators;
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REGISTER_OP_KERNEL(sequence_softmax, CUDNN, ::paddle::platform::CUDAPlace,
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ops::SequenceSoftmaxCUDNNKernel<float>,
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ops::SequenceSoftmaxCUDNNKernel<double>)
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REGISTER_OP_KERNEL(sequence_softmax_grad, CUDNN, ::paddle::platform::CUDAPlace,
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ops::SequenceSoftmaxGradCUDNNKernel<float>,
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ops::SequenceSoftmaxGradCUDNNKernel<double>)
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@ -0,0 +1,62 @@
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/* Copyright (c) 2018 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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#include "paddle/fluid/operators/math/softmax.h"
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#include "paddle/fluid/framework/op_registry.h"
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namespace paddle {
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namespace operators {
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using Tensor = framework::Tensor;
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template <typename T>
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class SoftmaxCUDNNKernel : public framework::OpKernel<T> {
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public:
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void Compute(const framework::ExecutionContext& context) const override {
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auto* X = context.Input<Tensor>("X");
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auto* Out = context.Output<Tensor>("Out");
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// allocate memory on device.
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Out->mutable_data<T>(context.GetPlace());
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math::SoftmaxCUDNNFunctor<T>()(
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context.template device_context<platform::CUDADeviceContext>(), X, Out);
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}
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};
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template <typename T>
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class SoftmaxGradCUDNNKernel : public framework::OpKernel<T> {
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public:
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void Compute(const framework::ExecutionContext& context) const override {
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auto* Out = context.Input<Tensor>("Out");
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auto* dOut = context.Input<Tensor>(framework::GradVarName("Out"));
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auto* dX = context.Output<Tensor>(framework::GradVarName("X"));
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// allocate memory on device.
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dX->mutable_data<T>(context.GetPlace());
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math::SoftmaxGradCUDNNFunctor<T>()(
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context.template device_context<platform::CUDADeviceContext>(), Out,
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dOut, dX);
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}
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};
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} // namespace operators
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} // namespace paddle
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namespace ops = paddle::operators;
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REGISTER_OP_KERNEL(softmax, CUDNN, ::paddle::platform::CUDAPlace,
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ops::SoftmaxCUDNNKernel<float>);
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REGISTER_OP_KERNEL(softmax_grad, CUDNN, ::paddle::platform::CUDAPlace,
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ops::SoftmaxGradCUDNNKernel<float>);
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