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7f33ec55b2
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/9350 Re-apply #9270 Breaking this out of #8338 This takes care of the Eigen failure we saw on Mac CUDA builds when BUILD_CAFFE2 and BUILD_ATEN were removed. Fix is to isolate Eigen from headers included by cu files and processed by nvcc. This was worked on with smessmer. Reviewed By: mingzhe09088 Differential Revision: D8794431 fbshipit-source-id: de656334af46c697802073f8e8d9a6aeb9ca65a7
110 lines
2.3 KiB
C++
110 lines
2.3 KiB
C++
#include "caffe2/operators/cos_op.h"
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#include "caffe2/utils/eigen_utils.h"
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#include <algorithm>
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#include <functional>
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namespace caffe2 {
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template <>
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template <typename T>
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bool CosGradientFunctor<CPUContext>::Forward(
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const std::vector<int>& X_dims,
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const std::vector<int>& /* dY_dims */,
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const T* X,
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const T* dY,
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T* dX,
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CPUContext* /* context */) const {
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const int size = std::accumulate(
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X_dims.cbegin(), X_dims.cend(), 1, std::multiplies<int>());
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ConstEigenVectorArrayMap<T> dY_arr(dY, size);
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ConstEigenVectorArrayMap<T> X_arr(X, size);
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EigenVectorMap<T>(dX, size) = -dY_arr * X_arr.sin();
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return true;
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}
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REGISTER_CPU_OPERATOR(
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Cos,
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UnaryElementwiseOp<TensorTypes<float>, CPUContext, CosFunctor<CPUContext>>);
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REGISTER_CPU_OPERATOR(
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CosGradient,
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BinaryElementwiseOp<
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TensorTypes<float>,
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CPUContext,
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CosGradientFunctor<CPUContext>>);
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OPERATOR_SCHEMA(Cos)
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.NumInputs(1)
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.NumOutputs(1)
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.IdenticalTypeAndShape()
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.SetDoc(R"DOC(
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Calculates the cosine of the given input tensor, element-wise.
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Github Links:
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- https://github.com/pytorch/pytorch/blob/master/caffe2/operators/cos_op.cc
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<details>
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<summary> <b>Example</b> </summary>
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**Code**
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```
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workspace.ResetWorkspace()
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op = core.CreateOperator(
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"Cos",
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["X"],
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["Y"]
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)
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workspace.FeedBlob("X", np.random.rand(5).astype(np.float32))
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print("X:", workspace.FetchBlob("X"))
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workspace.RunOperatorOnce(op)
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print("Y:", workspace.FetchBlob("Y"))
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```
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**Result**
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```
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X: [0.6816719 0.76771533 0.933932 0.01404487 0.11862425]
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Y: [0.7765203 0.71949923 0.5946774 0.99990135 0.9929724 ]
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```
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</details>
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)DOC")
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.Input(0, "X", "*(type: Tensor`<float>`)* Input tensor.")
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.Output(
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0,
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"Y",
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"*(type: Tensor`<float>`)* Output tensor calculated as the cosine of the input tensor, element-wise.");
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OPERATOR_SCHEMA(CosGradient).NumInputs(2).NumOutputs(1).IdenticalTypeAndShape();
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namespace {
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class GetCosGradient : public GradientMakerBase {
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using GradientMakerBase::GradientMakerBase;
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std::vector<OperatorDef> GetGradientDefs() override {
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return SingleGradientDef(
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"CosGradient",
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"",
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std::vector<std::string>{I(0), GO(0)},
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std::vector<std::string>{GI(0)});
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}
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};
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} // namespace
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REGISTER_GRADIENT(Cos, GetCosGradient);
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} // namespace caffe2
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