From d9ea0c47c65ff41da2d213cce8b0ef434e817ec2 Mon Sep 17 00:00:00 2001 From: CNugteren Date: Thu, 2 Jul 2015 07:16:04 +0200 Subject: Added the TRMM routine, tester, and client --- src/routines/xtrmm.cc | 135 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 135 insertions(+) create mode 100644 src/routines/xtrmm.cc (limited to 'src/routines') diff --git a/src/routines/xtrmm.cc b/src/routines/xtrmm.cc new file mode 100644 index 00000000..543df844 --- /dev/null +++ b/src/routines/xtrmm.cc @@ -0,0 +1,135 @@ + +// ================================================================================================= +// This file is part of the CLBlast project. The project is licensed under Apache Version 2.0. This +// project loosely follows the Google C++ styleguide and uses a tab-size of two spaces and a max- +// width of 100 characters per line. +// +// Author(s): +// Cedric Nugteren +// +// This file implements the Xtrmm class (see the header for information about the class). +// +// ================================================================================================= + +#include "internal/routines/xtrmm.h" + +#include +#include + +namespace clblast { +// ================================================================================================= + +// Constructor: forwards to base class constructor +template +Xtrmm::Xtrmm(CommandQueue &queue, Event &event): + Xgemm(queue, event) { +} + +// ================================================================================================= + +// The main routine +template +StatusCode Xtrmm::DoTrmm(const Layout layout, const Side side, const Triangle triangle, + const Transpose a_transpose, const Diagonal diagonal, + const size_t m, const size_t n, + const T alpha, + const Buffer &a_buffer, const size_t a_offset, const size_t a_ld, + const Buffer &b_buffer, const size_t b_offset, const size_t b_ld) { + + // Makes sure all dimensions are larger than zero + if ((m == 0) || (n == 0)) { return StatusCode::kInvalidDimension; } + + // Computes the k dimension. This is based on whether or not matrix is A (on the left) + // or B (on the right) in the Xgemm routine. + auto k = (side == Side::kLeft) ? m : n; + + // Checks for validity of the triangular A matrix + auto status = TestMatrixA(k, k, a_buffer, a_offset, a_ld, sizeof(T)); + if (ErrorIn(status)) { return status; } + + // Determines which kernel to run based on the layout (the Xgemm kernel assumes column-major as + // default) and on whether we are dealing with an upper or lower triangle of the triangular matrix + bool is_upper = ((triangle == Triangle::kUpper && layout != Layout::kRowMajor) || + (triangle == Triangle::kLower && layout == Layout::kRowMajor)); + auto kernel_name = (is_upper) ? "TrmmUpperToSquared" : "TrmmLowerToSquared"; + + // Determines whether or not the triangular matrix is unit-diagonal + auto unit_diagonal = (diagonal == Diagonal::kUnit) ? true : false; + + // Temporary buffer for a copy of the triangular matrix + try { + auto temp_triangular = Buffer(context_, CL_MEM_READ_WRITE, k*k*sizeof(T)); + + // Creates a general matrix from the triangular matrix to be able to run the regular Xgemm + // routine afterwards + try { + auto& program = GetProgramFromCache(); + auto kernel = Kernel(program, kernel_name); + + // Sets the arguments for the triangular-to-squared kernel + kernel.SetArgument(0, static_cast(k)); + kernel.SetArgument(1, static_cast(a_ld)); + kernel.SetArgument(2, static_cast(a_offset)); + kernel.SetArgument(3, a_buffer()); + kernel.SetArgument(4, static_cast(k)); + kernel.SetArgument(5, static_cast(k)); + kernel.SetArgument(6, static_cast(0)); + kernel.SetArgument(7, temp_triangular()); + kernel.SetArgument(8, static_cast(unit_diagonal)); + + // Uses the common padding kernel's thread configuration. This is allowed, since the + // triangular-to-squared kernel uses the same parameters. + auto global = std::vector{Ceil(CeilDiv(k, db_["PAD_WPTX"]), db_["PAD_DIMX"]), + Ceil(CeilDiv(k, db_["PAD_WPTY"]), db_["PAD_DIMY"])}; + auto local = std::vector{db_["PAD_DIMX"], db_["PAD_DIMY"]}; + status = RunKernel(kernel, global, local); + if (ErrorIn(status)) { return status; } + + // Runs the regular Xgemm code with either "B := alpha*A*B" or ... + if (side == Side::kLeft) { + status = DoGemm(layout, a_transpose, Transpose::kNo, + m, n, k, + alpha, + temp_triangular, 0, k, + b_buffer, b_offset, b_ld, + static_cast(0.0), + b_buffer, b_offset, b_ld); + } + + // ... with "B := alpha*B*A". Note that A and B are now reversed. + else { + status = DoGemm(layout, Transpose::kNo, a_transpose, + m, n, k, + alpha, + b_buffer, b_offset, b_ld, + temp_triangular, 0, k, + static_cast(0.0), + b_buffer, b_offset, b_ld); + + // A and B are now reversed, so also reverse the error codes returned from the Xgemm routine + switch(status) { + case StatusCode::kInvalidMatrixA: status = StatusCode::kInvalidMatrixB; break; + case StatusCode::kInvalidMatrixB: status = StatusCode::kInvalidMatrixA; break; + case StatusCode::kInvalidLeadDimA: status = StatusCode::kInvalidLeadDimB; break; + case StatusCode::kInvalidLeadDimB: status = StatusCode::kInvalidLeadDimA; break; + case StatusCode::kInsufficientMemoryA: status = StatusCode::kInsufficientMemoryB; break; + case StatusCode::kInsufficientMemoryB: status = StatusCode::kInsufficientMemoryA; break; + } + } + + // Return the status of the Xgemm routine + return status; + } catch (...) { return StatusCode::kInvalidKernel; } + } catch (...) { return StatusCode::kTempBufferAllocFailure; } +} + +// ================================================================================================= + +// Compiles the templated class +template class Xtrmm; +template class Xtrmm; +template class Xtrmm; +template class Xtrmm; + +// ================================================================================================= +} // namespace clblast -- cgit v1.2.3