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187 lines
8.7 KiB
C++
187 lines
8.7 KiB
C++
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// =================================================================================================
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// This file is part of the CLBlast project. The project is licensed under Apache Version 2.0. This
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// project loosely follows the Google C++ styleguide and uses a tab-size of two spaces and a max-
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// width of 100 characters per line.
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//
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// Author(s):
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// Cedric Nugteren <www.cedricnugteren.nl>
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//
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// This file implements a class with static methods to describe the Xomatcopy routine. Examples of
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// such 'descriptions' are how to calculate the size a of buffer or how to run the routine. These
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// static methods are used by the correctness tester and the performance tester.
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//
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// =================================================================================================
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#ifndef CLBLAST_TEST_ROUTINES_XOMATCOPY_H_
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#define CLBLAST_TEST_ROUTINES_XOMATCOPY_H_
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#include <vector>
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#include <string>
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namespace clblast {
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// =================================================================================================
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template <typename T>
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StatusCode RunReference(const Arguments<T> &args, BuffersHost<T> &buffers_host) {
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// Checking for invalid arguments
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const auto a_rotated = (args.layout == Layout::kRowMajor);
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const auto b_rotated = (args.layout == Layout::kColMajor && args.a_transpose != Transpose::kNo) ||
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(args.layout == Layout::kRowMajor && args.a_transpose == Transpose::kNo);
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const auto a_base = (a_rotated) ? args.a_ld*(args.m-1) + args.n : args.a_ld*(args.n-1) + args.m;
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const auto b_base = (b_rotated) ? args.b_ld*(args.m-1) + args.n : args.b_ld*(args.n-1) + args.m;
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if ((args.m == 0) || (args.n == 0)) { return StatusCode::kInvalidDimension; }
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if ((args.a_ld < args.m && !a_rotated) || (args.a_ld < args.n && a_rotated)) { return StatusCode::kInvalidLeadDimA; }
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if ((args.b_ld < args.m && !b_rotated) || (args.b_ld < args.n && b_rotated)) { return StatusCode::kInvalidLeadDimB; }
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if (buffers_host.a_mat.size() * sizeof(T) < (a_base + args.a_offset) * sizeof(T)) { return StatusCode::kInsufficientMemoryA; }
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if (buffers_host.b_mat.size() * sizeof(T) < (b_base + args.b_offset) * sizeof(T)) { return StatusCode::kInsufficientMemoryB; }
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// Matrix copy, scaling, and/or transpose
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for (auto id1 = size_t{0}; id1 < args.m; ++id1) {
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for (auto id2 = size_t{0}; id2 < args.n; ++id2) {
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const auto a_one = (a_rotated) ? id2 : id1;
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const auto a_two = (a_rotated) ? id1 : id2;
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const auto b_one = (b_rotated) ? id2 : id1;
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const auto b_two = (b_rotated) ? id1 : id2;
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const auto a_index = a_two * args.a_ld + a_one + args.a_offset;
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const auto b_index = b_two * args.b_ld + b_one + args.b_offset;
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buffers_host.b_mat[b_index] = args.alpha * buffers_host.a_mat[a_index];
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}
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}
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return StatusCode::kSuccess;
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}
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// Half-precision version calling the above reference implementation after conversions
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template <>
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StatusCode RunReference<half>(const Arguments<half> &args, BuffersHost<half> &buffers_host) {
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auto a_buffer2 = HalfToFloatBuffer(buffers_host.a_mat);
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auto b_buffer2 = HalfToFloatBuffer(buffers_host.b_mat);
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auto dummy = std::vector<float>(0);
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auto buffers2 = BuffersHost<float>{dummy, dummy, a_buffer2, b_buffer2, dummy, dummy, dummy};
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auto args2 = Arguments<float>();
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args2.a_size = args.a_size; args2.b_size = args.b_size;
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args2.a_ld = args.a_ld; args2.b_ld = args.b_ld; args2.m = args.m; args2.n = args.n;
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args2.a_offset = args.a_offset; args2.b_offset = args.b_offset;
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args2.layout = args.layout; args2.a_transpose = args.a_transpose;
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args2.alpha = HalfToFloat(args.alpha);
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auto status = RunReference(args2, buffers2);
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FloatToHalfBuffer(buffers_host.b_mat, b_buffer2);
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return status;
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}
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// =================================================================================================
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// See comment at top of file for a description of the class
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template <typename T>
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class TestXomatcopy {
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public:
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// The BLAS level: 4 for the extra routines
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static size_t BLASLevel() { return 4; }
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// The list of arguments relevant for this routine
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static std::vector<std::string> GetOptions() {
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return {kArgM, kArgN,
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kArgLayout, kArgATransp,
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kArgALeadDim, kArgBLeadDim,
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kArgAOffset, kArgBOffset,
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kArgAlpha};
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}
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static std::vector<std::string> BuffersIn() { return {kBufMatA, kBufMatB}; }
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static std::vector<std::string> BuffersOut() { return {kBufMatB}; }
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// Describes how to obtain the sizes of the buffers
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static size_t GetSizeA(const Arguments<T> &args) {
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const auto a_rotated = (args.layout == Layout::kRowMajor);
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const auto a_two = (a_rotated) ? args.m : args.n;
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return a_two * args.a_ld + args.a_offset;
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}
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static size_t GetSizeB(const Arguments<T> &args) {
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const auto b_rotated = (args.layout == Layout::kColMajor && args.a_transpose != Transpose::kNo) ||
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(args.layout == Layout::kRowMajor && args.a_transpose == Transpose::kNo);
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const auto b_two = (b_rotated) ? args.n : args.m;
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return b_two * args.b_ld + args.b_offset;
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}
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// Describes how to set the sizes of all the buffers
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static void SetSizes(Arguments<T> &args) {
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args.a_size = GetSizeA(args);
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args.b_size = GetSizeB(args);
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}
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// Describes what the default values of the leading dimensions of the matrices are
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static size_t DefaultLDA(const Arguments<T> &args) { return args.n; }
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static size_t DefaultLDB(const Arguments<T> &args) { return args.m; }
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static size_t DefaultLDC(const Arguments<T> &) { return 1; } // N/A for this routine
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// Describes which omatcopyose options are relevant for this routine
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using Transposes = std::vector<Transpose>;
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static Transposes GetATransposes(const Transposes &all) { return all; }
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static Transposes GetBTransposes(const Transposes &) { return {}; } // N/A for this routine
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// Describes how to prepare the input data
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static void PrepareData(const Arguments<T>&, Queue&, const int, std::vector<T>&,
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std::vector<T>&, std::vector<T>&, std::vector<T>&, std::vector<T>&,
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std::vector<T>&, std::vector<T>&) {} // N/A for this routine
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// Describes how to run the CLBlast routine
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static StatusCode RunRoutine(const Arguments<T> &args, Buffers<T> &buffers, Queue &queue) {
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auto queue_plain = queue();
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auto event = cl_event{};
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auto status = Omatcopy<T>(args.layout, args.a_transpose,
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args.m, args.n, args.alpha,
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buffers.a_mat(), args.a_offset, args.a_ld,
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buffers.b_mat(), args.b_offset, args.b_ld,
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&queue_plain, &event);
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if (status == StatusCode::kSuccess) { clWaitForEvents(1, &event); clReleaseEvent(event); }
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return status;
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}
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// Describes how to run a naive version of the routine (for correctness/performance comparison).
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// Note that a proper clBLAS or CPU BLAS comparison is not available for non-BLAS routines.
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static StatusCode RunReference1(const Arguments<T> &args, Buffers<T> &buffers, Queue &queue) {
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auto buffers_host = BuffersHost<T>();
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DeviceToHost(args, buffers, buffers_host, queue, BuffersIn());
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const auto status = RunReference(args, buffers_host);
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HostToDevice(args, buffers, buffers_host, queue, BuffersOut());
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return status;
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}
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static StatusCode RunReference2(const Arguments<T> &args, BuffersHost<T> &buffers_host, Queue&) {
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return RunReference(args, buffers_host);
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}
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// Describes how to download the results of the computation (more importantly: which buffer)
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static std::vector<T> DownloadResult(const Arguments<T> &args, Buffers<T> &buffers, Queue &queue) {
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std::vector<T> result(args.b_size, static_cast<T>(0));
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buffers.b_mat.Read(queue, args.b_size, result);
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return result;
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}
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// Describes how to compute the indices of the result buffer
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static size_t ResultID1(const Arguments<T> &args) { return args.m; }
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static size_t ResultID2(const Arguments<T> &args) { return args.n; }
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static size_t GetResultIndex(const Arguments<T> &args, const size_t id1, const size_t id2) {
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const auto b_rotated = (args.layout == Layout::kColMajor && args.a_transpose != Transpose::kNo) ||
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(args.layout == Layout::kRowMajor && args.a_transpose == Transpose::kNo);
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const auto b_one = (b_rotated) ? id2 : id1;
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const auto b_two = (b_rotated) ? id1 : id2;
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return b_two * args.b_ld + b_one + args.b_offset;
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}
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// Describes how to compute performance metrics
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static size_t GetFlops(const Arguments<T> &args) {
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return args.m*args.n;
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}
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static size_t GetBytes(const Arguments<T> &args) {
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return (2*args.m*args.n) * sizeof(T);
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}
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};
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// =================================================================================================
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} // namespace clblast
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// CLBLAST_TEST_ROUTINES_XOMATCOPY_H_
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#endif
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