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178 lines
7.7 KiB
C++
178 lines
7.7 KiB
C++
// This test is designed to verify that the ConvBuilder can instantiate the same
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// kernel classes that are used in production code. Production code may have
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// hundreds or thousands of kernel instances, so this test uses a GTest typed
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// test suite to efficiently test a representative set of these kernel examples.
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// Each test case defines a specific convolution algorithm configuration and the
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// expected kernel type string that the builder should generate.
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#include <gtest/gtest.h>
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#include <ck_tile/builder/conv_builder.hpp>
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namespace {
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namespace ckb = ck_tile::builder;
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using P = ckb::BlockGemmPipelineVersion;
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// Defines the signature of the convolution operation to be tested.
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// This includes dimensionality, direction, data layout, and data type.
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struct ConvSignature
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{
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int spatial_dim = 2;
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ckb::ConvDirection direction = ckb::ConvDirection::BACKWARD_DATA;
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ckb::GroupConvLayout layout = ckb::GroupConvLayout::CHANNELS_LAST;
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ckb::DataType data_type = ckb::DataType::FP16;
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};
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static_assert(ckb::ConvSignatureDescriptor<ConvSignature>);
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// Defines the tunable algorithmic parameters for the convolution kernel.
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// This includes thread block configuration, tuning parameters, data transfer
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// settings, and the GEMM pipeline version.
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struct FwdConvAlgorithm
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{
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ckb::ThreadBlock thread_block;
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ckb::ConvTuningParams tuning_params;
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struct BlockTransfer
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{
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ckb::BlockATransferLengths thread_cluster_dims_a;
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ckb::BlockBTransferLengths thread_cluster_dims_b;
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ckb::BlockCTransferLengths thread_cluster_dims_c;
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} block_transfer;
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};
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static_assert(ckb::ConvAlgorithmDescriptor<FwdConvAlgorithm>);
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static_assert(ckb::SpecifiesThreadBlock<FwdConvAlgorithm>);
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static_assert(ckb::SpecifiesConvTuning<FwdConvAlgorithm>);
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static_assert(ckb::SpecifiesBlockATransfer<FwdConvAlgorithm>);
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static_assert(ckb::SpecifiesBlockBTransfer<FwdConvAlgorithm>);
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static_assert(ckb::SpecifiesBlockCTransfer<FwdConvAlgorithm>);
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// A container for a single test case, bundling a descriptive name, the
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// algorithm configuration, and the expected generated kernel type string.
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struct TestCase
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{
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std::string_view name;
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FwdConvAlgorithm algorithm;
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std::string_view expected_type;
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};
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// Helper function to set the sub_matrix size.
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constexpr ckb::ThreadBlock set_submatrix(int m, int n, int k)
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{
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return {.block_size = 256, .submatrix = {.m = m, .n = n, .k = k}};
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}
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// An array of test cases that drive the typed test suite. Each entry
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// represents a unique kernel instance to be verified.
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constexpr std::array TEST_CASES = {
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TestCase{
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.name = "ConvFwdXdlBf16CompInstances2x_0",
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.algorithm =
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{.thread_block = set_submatrix(256, 128, 64),
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.tuning_params = {.ak1 = 8, .bk1 = 8, .m_xdl_per_wave = 2, .n_xdl_per_wave = 2},
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.block_transfer = {.thread_cluster_dims_a = {.k0 = 4, .m = 16, .k1 = 1},
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.thread_cluster_dims_b = {.k0 = 4, .n = 8, .k1 = 1},
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.thread_cluster_dims_c = {.m_block = 1,
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.m_wave_per_xdl = 16,
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.n_block = 1,
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.n_wave_per_xdl = 4}}},
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.expected_type =
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"DeviceGroupedConvBwdDataMultipleD_Xdl_CShuffle_v1<256, 256, 128, 64, 8, 8, Default, "
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"16, 16, 1, 4, 8, 8, 1, 1, TransposeTransferInScalarPerVectorAligned: 1, "
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"TransposeTransferOutScalarPerVectorAligned: 1>",
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},
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};
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static constexpr int NUM_TEST_CASES = std::tuple_size_v<decltype(TEST_CASES)>;
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// Helper to generate testing::Types<TestIndex<0>, TestIndex<1>, ..., TestIndex<N-1>>.
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template <int N>
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struct TestingIndices
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{
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template <int INDEX>
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struct TestIndex
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{
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static constexpr int index = INDEX;
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};
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template <typename T, T... Indices>
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static auto GenerateTypes(std::integer_sequence<T, Indices...>)
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{
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return ::testing::Types<TestIndex<Indices>...>{};
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}
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// testing::Types sequence of TestIndex types.
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using Types = decltype(GenerateTypes(std::make_integer_sequence<int, N>{}));
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};
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// A typed test suite that will be instantiated for each type in TestingIndices::Types.
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// This creates a separate test for each entry in the TEST_CASES array, allowing
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// GTest to run and report on them individually.
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template <typename T>
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class ConvBuilderBwdInstancesTest : public ::testing::Test
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{
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protected:
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static constexpr int N = T::index;
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static constexpr const std::string_view& NAME = TEST_CASES[N].name;
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static constexpr auto& ALGORITHM = TEST_CASES[N].algorithm;
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static constexpr const std::string_view& EXPECTED_TYPE = TEST_CASES[N].expected_type;
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};
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// Custom test name generator to provide more descriptive names for each
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// typed test instance, incorporating the index and the name from the TestCase.
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struct TestNameGenerator
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{
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template <typename T>
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static std::string GetName(int index)
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{
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return std::to_string(index) + "." + std::string(TEST_CASES[index].name);
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}
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};
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TYPED_TEST_SUITE(ConvBuilderBwdInstancesTest,
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TestingIndices<NUM_TEST_CASES>::Types,
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TestNameGenerator);
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// This is the body of the typed test. It will be executed for each TestCase.
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// It verifies that the ConvBuilder, when configured with a specific algorithm,
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// generates the correct kernel type string and correctly configures the
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// underlying factory parameters.
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TYPED_TEST(ConvBuilderBwdInstancesTest, KernelParamsConfigured)
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{
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static constexpr const FwdConvAlgorithm& ALGORITHM =
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ConvBuilderBwdInstancesTest<TypeParam>::ALGORITHM;
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static constexpr const ConvSignature SIGNATURE;
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using Builder = ckb::ConvBuilder<SIGNATURE, ALGORITHM>;
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EXPECT_EQ(Builder::Instance::TypeString(),
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ConvBuilderBwdInstancesTest<TypeParam>::EXPECTED_TYPE);
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const auto& tp = ALGORITHM.tuning_params;
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EXPECT_EQ(Builder::Factory::TUNING.ak1, tp.ak1);
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EXPECT_EQ(Builder::Factory::TUNING.bk1, tp.bk1);
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const auto& tcda = ALGORITHM.block_transfer.thread_cluster_dims_a;
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EXPECT_EQ(Builder::Factory::A_BLOCK_TRANSFER.thread_cluster_dims[0], tcda.k0);
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EXPECT_EQ(Builder::Factory::A_BLOCK_TRANSFER.thread_cluster_dims[1], tcda.m);
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EXPECT_EQ(Builder::Factory::A_BLOCK_TRANSFER.thread_cluster_dims[2], tcda.k1);
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const auto& tcdb = ALGORITHM.block_transfer.thread_cluster_dims_b;
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EXPECT_EQ(Builder::Factory::B_BLOCK_TRANSFER.thread_cluster_dims[0], tcdb.k0);
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EXPECT_EQ(Builder::Factory::B_BLOCK_TRANSFER.thread_cluster_dims[1], tcdb.n);
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EXPECT_EQ(Builder::Factory::B_BLOCK_TRANSFER.thread_cluster_dims[2], tcdb.k1);
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const auto& tcdc = ALGORITHM.block_transfer.thread_cluster_dims_c;
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EXPECT_EQ(Builder::Factory::C_BLOCK_TRANSFER.thread_cluster_dims[0], tcdc.m_block);
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EXPECT_EQ(Builder::Factory::C_BLOCK_TRANSFER.thread_cluster_dims[1], tcdc.m_wave_per_xdl);
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EXPECT_EQ(Builder::Factory::C_BLOCK_TRANSFER.thread_cluster_dims[2], tcdc.n_block);
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EXPECT_EQ(Builder::Factory::C_BLOCK_TRANSFER.thread_cluster_dims[3], tcdc.n_wave_per_xdl);
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}
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// A standard GTest to ensure that all `expected_type` strings in the
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// TEST_CASES array are unique. This helps prevent copy-paste errors and
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// ensures that each test case is meaningful.
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TEST(ConvBuilderBwdInstancesTest, TypeStringsAreUnique)
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{
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std::set<std::string> strings;
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for(int i = 0; i < NUM_TEST_CASES; ++i)
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{
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const auto& [iter, inserted] = strings.insert(std::string(TEST_CASES[i].expected_type));
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EXPECT_TRUE(inserted) << "Duplicate expected_string " << *iter;
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}
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EXPECT_EQ(strings.size(), NUM_TEST_CASES)
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<< "Found fewer unique expected_strings than test cases";
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}
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} // namespace
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