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156 lines
5.3 KiB
C++
156 lines
5.3 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla
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// Public License v. 2.0. If a copy of the MPL was not distributed
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// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#define EIGEN_TEST_NO_LONGDOUBLE
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#define EIGEN_TEST_NO_COMPLEX
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#define EIGEN_TEST_FUNC cxx11_tensor_device
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#define EIGEN_DEFAULT_DENSE_INDEX_TYPE int
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#define EIGEN_USE_GPU
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#include "main.h"
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#include <unsupported/Eigen/CXX11/Tensor>
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using Eigen::Tensor;
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using Eigen::RowMajor;
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// Context for evaluation on cpu
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struct CPUContext {
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CPUContext(const Eigen::Tensor<float, 3>& in1, Eigen::Tensor<float, 3>& in2, Eigen::Tensor<float, 3>& out) : in1_(in1), in2_(in2), out_(out) { }
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const Eigen::Tensor<float, 3>& in1() const { return in1_; }
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const Eigen::Tensor<float, 3>& in2() const { return in2_; }
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Eigen::TensorDevice<Eigen::Tensor<float, 3>, Eigen::DefaultDevice> out() { return TensorDevice<Eigen::Tensor<float, 3>, Eigen::DefaultDevice>(cpu_device_, out_); }
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private:
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const Eigen::Tensor<float, 3>& in1_;
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const Eigen::Tensor<float, 3>& in2_;
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Eigen::Tensor<float, 3>& out_;
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Eigen::DefaultDevice cpu_device_;
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};
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// Context for evaluation on GPU
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struct GPUContext {
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GPUContext(const Eigen::TensorMap<Eigen::Tensor<float, 3> >& in1, Eigen::TensorMap<Eigen::Tensor<float, 3> >& in2, Eigen::TensorMap<Eigen::Tensor<float, 3> >& out) : in1_(in1), in2_(in2), out_(out), gpu_device_(&stream_) {
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cudaStreamCreate(&stream_);
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}
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~GPUContext() {
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cudaStreamDestroy(stream_);
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}
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const Eigen::TensorMap<Eigen::Tensor<float, 3> >& in1() const { return in1_; }
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const Eigen::TensorMap<Eigen::Tensor<float, 3> >& in2() const { return in2_; }
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Eigen::TensorDevice<Eigen::TensorMap<Eigen::Tensor<float, 3> >, Eigen::GpuDevice> out() { return TensorDevice<Eigen::TensorMap<Eigen::Tensor<float, 3> >, Eigen::GpuDevice>(gpu_device_, out_); }
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private:
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const Eigen::TensorMap<Eigen::Tensor<float, 3> >& in1_;
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const Eigen::TensorMap<Eigen::Tensor<float, 3> >& in2_;
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Eigen::TensorMap<Eigen::Tensor<float, 3> >& out_;
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cudaStream_t stream_;
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Eigen::GpuDevice gpu_device_;
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};
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// The actual expression to evaluate
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template <typename Context>
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static void test_contextual_eval(Context* context)
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{
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context->out() = context->in1() + context->in2() * 3.14f + context->in1().constant(2.718f);
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}
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template <typename Context>
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static void test_forced_contextual_eval(Context* context)
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{
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context->out() = (context->in1() + context->in2()).eval() * 3.14f + context->in1().constant(2.718f);
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}
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static void test_cpu() {
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Eigen::Tensor<float, 3> in1(Eigen::array<int, 3>(2,3,7));
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Eigen::Tensor<float, 3> in2(Eigen::array<int, 3>(2,3,7));
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Eigen::Tensor<float, 3> out(Eigen::array<int, 3>(2,3,7));
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in1.setRandom();
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in2.setRandom();
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CPUContext context(in1, in2, out);
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test_contextual_eval(&context);
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for (int i = 0; i < 2; ++i) {
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for (int j = 0; j < 3; ++j) {
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for (int k = 0; k < 7; ++k) {
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VERIFY_IS_APPROX(out(Eigen::array<int, 3>(i,j,k)), in1(Eigen::array<int, 3>(i,j,k)) + in2(Eigen::array<int, 3>(i,j,k)) * 3.14f + 2.718f);
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}
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}
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}
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test_forced_contextual_eval(&context);
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for (int i = 0; i < 2; ++i) {
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for (int j = 0; j < 3; ++j) {
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for (int k = 0; k < 7; ++k) {
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VERIFY_IS_APPROX(out(Eigen::array<int, 3>(i,j,k)), (in1(Eigen::array<int, 3>(i,j,k)) + in2(Eigen::array<int, 3>(i,j,k))) * 3.14f + 2.718f);
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}
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}
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}
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}
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static void test_gpu() {
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Eigen::Tensor<float, 3> in1(Eigen::array<int, 3>(2,3,7));
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Eigen::Tensor<float, 3> in2(Eigen::array<int, 3>(2,3,7));
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Eigen::Tensor<float, 3> out(Eigen::array<int, 3>(2,3,7));
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in1.setRandom();
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in2.setRandom();
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std::size_t in1_bytes = in1.size() * sizeof(float);
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std::size_t in2_bytes = in2.size() * sizeof(float);
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std::size_t out_bytes = out.size() * sizeof(float);
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float* d_in1;
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float* d_in2;
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float* d_out;
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cudaMalloc((void**)(&d_in1), in1_bytes);
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cudaMalloc((void**)(&d_in2), in2_bytes);
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cudaMalloc((void**)(&d_out), out_bytes);
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cudaMemcpy(d_in1, in1.data(), in1_bytes, cudaMemcpyHostToDevice);
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cudaMemcpy(d_in2, in2.data(), in2_bytes, cudaMemcpyHostToDevice);
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Eigen::TensorMap<Eigen::Tensor<float, 3> > gpu_in1(d_in1, Eigen::array<int, 3>(2,3,7));
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Eigen::TensorMap<Eigen::Tensor<float, 3> > gpu_in2(d_in2, Eigen::array<int, 3>(2,3,7));
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Eigen::TensorMap<Eigen::Tensor<float, 3> > gpu_out(d_out, Eigen::array<int, 3>(2,3,7));
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GPUContext context(gpu_in1, gpu_in2, gpu_out);
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test_contextual_eval(&context);
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cudaMemcpy(out.data(), d_out, out_bytes, cudaMemcpyDeviceToHost);
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for (int i = 0; i < 2; ++i) {
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for (int j = 0; j < 3; ++j) {
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for (int k = 0; k < 7; ++k) {
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VERIFY_IS_APPROX(out(Eigen::array<int, 3>(i,j,k)), in1(Eigen::array<int, 3>(i,j,k)) + in2(Eigen::array<int, 3>(i,j,k)) * 3.14f + 2.718f);
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}
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}
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}
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test_forced_contextual_eval(&context);
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cudaMemcpy(out.data(), d_out, out_bytes, cudaMemcpyDeviceToHost);
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for (int i = 0; i < 2; ++i) {
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for (int j = 0; j < 3; ++j) {
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for (int k = 0; k < 7; ++k) {
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VERIFY_IS_APPROX(out(Eigen::array<int, 3>(i,j,k)), (in1(Eigen::array<int, 3>(i,j,k)) + in2(Eigen::array<int, 3>(i,j,k))) * 3.14f + 2.718f);
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}
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}
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}
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}
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void test_cxx11_tensor_device()
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{
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CALL_SUBTEST(test_cpu());
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CALL_SUBTEST(test_gpu());
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}
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