diff options
Diffstat (limited to 'unsupported/test/cxx11_tensor_contraction.cpp')
-rw-r--r-- | unsupported/test/cxx11_tensor_contraction.cpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/unsupported/test/cxx11_tensor_contraction.cpp b/unsupported/test/cxx11_tensor_contraction.cpp index ace97057f..918c96277 100644 --- a/unsupported/test/cxx11_tensor_contraction.cpp +++ b/unsupported/test/cxx11_tensor_contraction.cpp @@ -510,6 +510,55 @@ static void test_const_inputs() VERIFY_IS_APPROX(mat3(1,1), mat1(1,0)*mat2(0,1) + mat1(1,1)*mat2(1,1) + mat1(1,2)*mat2(2,1)); } +// Apply Sqrt to all output elements. +struct SqrtOutputKernel { + template <typename Index, typename Scalar> + EIGEN_ALWAYS_INLINE void operator()( + const OutputKernel::OutputMapper<Index, Scalar>& output_mapper, + const TensorContractionParams&, Index, Index, Index num_rows, + Index num_cols) const { + for (int i = 0; i < num_rows; ++i) { + for (int j = 0; j < num_cols; ++j) { + output_mapper(i, j) = std::sqrt(output_mapper(i, j)); + } + } + } +}; + +template <int DataLayout> +static void test_large_contraction_with_output_kernel() { + Tensor<float, 4, DataLayout> t_left(30, 50, 8, 31); + Tensor<float, 5, DataLayout> t_right(8, 31, 7, 20, 10); + Tensor<float, 5, DataLayout> t_result(30, 50, 7, 20, 10); + + t_left.setRandom(); + t_right.setRandom(); + // Put trash in mat4 to verify contraction clears output memory. + t_result.setRandom(); + + // Add a little offset so that the results won't be close to zero. + t_left += t_left.constant(1.0f); + t_right += t_right.constant(1.0f); + + typedef Map<Eigen::Matrix<float, Dynamic, Dynamic, DataLayout>> MapXf; + MapXf m_left(t_left.data(), 1500, 248); + MapXf m_right(t_right.data(), 248, 1400); + Eigen::Matrix<float, Dynamic, Dynamic, DataLayout> m_result(1500, 1400); + + // this contraction should be equivalent to a single matrix multiplication + Eigen::array<DimPair, 2> dims({{DimPair(2, 0), DimPair(3, 1)}}); + + // compute results by separate methods + t_result = t_left.contract(t_right, dims, SqrtOutputKernel()); + + m_result = m_left * m_right; + + for (size_t i = 0; i < t_result.dimensions().TotalSize(); i++) { + VERIFY(&t_result.data()[i] != &m_result.data()[i]); + VERIFY_IS_APPROX(t_result.data()[i], std::sqrt(m_result.data()[i])); + } +} + void test_cxx11_tensor_contraction() { CALL_SUBTEST(test_evals<ColMajor>()); @@ -542,4 +591,6 @@ void test_cxx11_tensor_contraction() CALL_SUBTEST(test_tensor_product<RowMajor>()); CALL_SUBTEST(test_const_inputs<ColMajor>()); CALL_SUBTEST(test_const_inputs<RowMajor>()); + CALL_SUBTEST(test_large_contraction_with_output_kernel<ColMajor>()); + CALL_SUBTEST(test_large_contraction_with_output_kernel<RowMajor>()); } |