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Add unittest for
linalg::axpy (#942)
Closes #873 Closes #944 Authors: - Ben Frederickson (https://github.com/benfred) Approvers: - Corey J. Nolet (https://github.com/cjnolet) URL: #942
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| /* | ||
| * Copyright (c) 2022, NVIDIA CORPORATION. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| #include <raft/linalg/axpy.cuh> | ||
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| #include "../test_utils.h" | ||
| #include <gtest/gtest.h> | ||
| #include <raft/random/rng.cuh> | ||
| #include <raft/util/cuda_utils.cuh> | ||
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| namespace raft { | ||
| namespace linalg { | ||
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| // Reference axpy implementation. | ||
| template <typename T> | ||
| __global__ void naiveAxpy(const int n, const T alpha, const T* x, T* y, int incx, int incy) | ||
| { | ||
| int idx = threadIdx.x + blockIdx.x * blockDim.x; | ||
| if (idx < n) { y[idx * incy] += alpha * x[idx * incx]; } | ||
| } | ||
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| template <typename ElementType, | ||
| typename IndexType = std::uint32_t, | ||
| typename LayoutPolicy = layout_stride> | ||
| auto make_strided_device_vector_view(ElementType* ptr, IndexType n, IndexType stride) | ||
| { | ||
| vector_extent<IndexType> exts{n}; | ||
| std::array<IndexType, 1> strides{stride}; | ||
| auto layout = typename LayoutPolicy::mapping<vector_extent<IndexType>>{exts, strides}; | ||
| return device_vector_view<ElementType, IndexType, LayoutPolicy>{ptr, layout}; | ||
| } | ||
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| template <typename InType, typename IndexType = int, typename OutType = InType> | ||
| struct AxpyInputs { | ||
| OutType tolerance; | ||
| IndexType len; | ||
| InType alpha; | ||
| IndexType incx; | ||
| IndexType incy; | ||
| unsigned long long int seed; | ||
| }; | ||
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| template <typename T> | ||
| class AxpyTest : public ::testing::TestWithParam<AxpyInputs<T>> { | ||
| protected: | ||
| raft::handle_t handle; | ||
| AxpyInputs<T> params; | ||
| rmm::device_uvector<T> refy; | ||
| rmm::device_uvector<T> y; | ||
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| public: | ||
| AxpyTest() | ||
| : testing::TestWithParam<AxpyInputs<T>>(), | ||
| refy(0, handle.get_stream()), | ||
| y(0, handle.get_stream()) | ||
| { | ||
| handle.sync_stream(); | ||
| } | ||
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| protected: | ||
| void SetUp() override | ||
| { | ||
| params = ::testing::TestWithParam<AxpyInputs<T>>::GetParam(); | ||
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| cudaStream_t stream = handle.get_stream(); | ||
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| raft::random::RngState r(params.seed); | ||
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| int x_len = params.len * params.incx; | ||
| int y_len = params.len * params.incy; | ||
| rmm::device_uvector<T> x(x_len, stream); | ||
| y.resize(y_len, stream); | ||
| refy.resize(y_len, stream); | ||
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| uniform(handle, r, x.data(), x_len, T(-1.0), T(1.0)); | ||
| uniform(handle, r, y.data(), y_len, T(-1.0), T(1.0)); | ||
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| // Take a copy of the random generated values in y for the naive reference implementation | ||
| // this is necessary since axpy uses y for both input and output | ||
| raft::copy(refy.data(), y.data(), y_len, stream); | ||
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| int threads = 64; | ||
| int blocks = raft::ceildiv<int>(params.len, threads); | ||
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| naiveAxpy<T><<<blocks, threads, 0, stream>>>( | ||
| params.len, params.alpha, x.data(), refy.data(), params.incx, params.incy); | ||
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| if ((params.incx > 1) && (params.incy > 1)) { | ||
| axpy(handle, | ||
| make_host_scalar_view<const T>(¶ms.alpha), | ||
| make_strided_device_vector_view<const T>(x.data(), params.len, params.incx), | ||
| make_strided_device_vector_view<T>(y.data(), params.len, params.incy)); | ||
| } else if (params.incx > 1) { | ||
| axpy(handle, | ||
| make_host_scalar_view<const T>(¶ms.alpha), | ||
| make_strided_device_vector_view<const T>(x.data(), params.len, params.incx), | ||
| make_device_vector_view<T>(y.data(), params.len)); | ||
| } else if (params.incy > 1) { | ||
| axpy(handle, | ||
| make_host_scalar_view<const T>(¶ms.alpha), | ||
| make_device_vector_view<const T>(x.data(), params.len), | ||
| make_strided_device_vector_view<T>(y.data(), params.len, params.incy)); | ||
| } else { | ||
| axpy(handle, | ||
| make_host_scalar_view<const T>(¶ms.alpha), | ||
| make_device_vector_view<const T>(x.data(), params.len), | ||
| make_device_vector_view<T>(y.data(), params.len)); | ||
| } | ||
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| handle.sync_stream(); | ||
| } | ||
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| void TearDown() override {} | ||
| }; | ||
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| const std::vector<AxpyInputs<float>> inputsf = { | ||
| {0.000001f, 1024 * 1024, 2.f, 1, 1, 1234ULL}, | ||
| {0.000001f, 16 * 1024 * 1024, 128.f, 1, 1, 1234ULL}, | ||
| {0.000001f, 98689, 4.f, 1, 1, 1234ULL}, | ||
| {0.000001f, 4 * 1024 * 1024, -1, 1, 1, 1234ULL}, | ||
| {0.000001f, 1024 * 1024, 6, 4, 1, 1234ULL}, | ||
| {0.000001f, 1024 * 1024, 7, 1, 3, 1234ULL}, | ||
| {0.000001f, 1024 * 1024, 8, 4, 3, 1234ULL}, | ||
| }; | ||
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| const std::vector<AxpyInputs<double>> inputsd = { | ||
| {0.000001f, 1024 * 1024, 2.f, 1, 1, 1234ULL}, | ||
| {0.000001f, 16 * 1024 * 1024, 128.f, 1, 1, 1234ULL}, | ||
| {0.000001f, 98689, 4.f, 1, 1, 1234ULL}, | ||
| {0.000001f, 4 * 1024 * 1024, -1, 1, 1, 1234ULL}, | ||
| {0.000001f, 1024 * 1024, 6, 4, 1, 1234ULL}, | ||
| {0.000001f, 1024 * 1024, 7, 1, 3, 1234ULL}, | ||
| {0.000001f, 1024 * 1024, 8, 4, 3, 1234ULL}, | ||
| }; | ||
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| typedef AxpyTest<float> AxpyTestF; | ||
| TEST_P(AxpyTestF, Result) | ||
| { | ||
| ASSERT_TRUE(raft::devArrMatch( | ||
| refy.data(), y.data(), params.len * params.incy, raft::CompareApprox<float>(params.tolerance))); | ||
| } | ||
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| typedef AxpyTest<double> AxpyTestD; | ||
| TEST_P(AxpyTestD, Result) | ||
| { | ||
| ASSERT_TRUE(raft::devArrMatch(refy.data(), | ||
| y.data(), | ||
| params.len * params.incy, | ||
| raft::CompareApprox<double>(params.tolerance))); | ||
| } | ||
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| INSTANTIATE_TEST_SUITE_P(AxpyTests, AxpyTestF, ::testing::ValuesIn(inputsf)); | ||
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| INSTANTIATE_TEST_SUITE_P(AxpyTests, AxpyTestD, ::testing::ValuesIn(inputsd)); | ||
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| } // end namespace linalg | ||
| } // end namespace raft |