From 4507ba4997cd546418eae0972c018073ac7b36aa Mon Sep 17 00:00:00 2001 From: CNugteren Date: Fri, 18 Sep 2015 15:25:20 +0200 Subject: Added first version of banded matrix-vector multiplication --- src/routines/level2/xgbmv.cc | 117 +++++++++++++++++++++++++++++++++++++++++++ src/routines/level2/xgemv.cc | 6 ++- 2 files changed, 121 insertions(+), 2 deletions(-) create mode 100644 src/routines/level2/xgbmv.cc (limited to 'src/routines/level2') diff --git a/src/routines/level2/xgbmv.cc b/src/routines/level2/xgbmv.cc new file mode 100644 index 00000000..eac208b3 --- /dev/null +++ b/src/routines/level2/xgbmv.cc @@ -0,0 +1,117 @@ + +// ================================================================================================= +// 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 Xgbmv class (see the header for information about the class). +// +// ================================================================================================= + +#include "internal/routines/level2/xgbmv.h" + +#include +#include + +namespace clblast { +// ================================================================================================= + +// Constructor: forwards to base class constructor +template +Xgbmv::Xgbmv(Queue &queue, Event &event, const std::string &name): + Xgemv(queue, event, name) { +} + +// ================================================================================================= + +// The main routine +template +StatusCode Xgbmv::DoGbmv(const Layout layout, const Transpose a_transpose, + const size_t m, const size_t n, const size_t kl, const size_t ku, + const T alpha, + const Buffer &a_buffer, const size_t a_offset, const size_t a_ld, + const Buffer &x_buffer, const size_t x_offset, const size_t x_inc, + const T beta, + const Buffer &y_buffer, const size_t y_offset, const size_t y_inc) { + + // Makes sure all dimensions are larger than zero + if (n == 0 || m == 0) { return StatusCode::kInvalidDimension; } + + // + auto rotated = (layout == Layout::kRowMajor); + auto t_one = (rotated) ? n : m; + auto t_two = (rotated) ? m : n; + auto a_one = kl+ku+1; + auto a_two = (rotated) ? m : n; + + // Checks for validity of the A matrix + auto status = StatusCode::kSuccess; + if (a_ld < a_one) { return StatusCode::kInvalidLeadDimA; } + try { + auto required_size = (a_ld*a_two + a_offset)*sizeof(T); + auto buffer_size = a_buffer.GetSize(); + if (buffer_size < required_size) { return StatusCode::kInsufficientMemoryA; } + } catch (...) { return StatusCode::kInvalidMatrixA; } + + // Temporary buffer to generalize the input matrix + try { + auto t_buffer = Buffer(context_, t_one*t_two); + + // Creates a general matrix from the input to be able to run the regular Xgemv routine + try { + auto& program = GetProgramFromCache(); + auto kernel = Kernel(program, "GeneralBandedToGeneral"); + + // Sets the arguments for the matrix transform kernel + kernel.SetArgument(0, static_cast(a_one)); + kernel.SetArgument(1, static_cast(a_two)); + kernel.SetArgument(2, static_cast(a_ld)); + kernel.SetArgument(3, static_cast(a_offset)); + kernel.SetArgument(4, a_buffer()); + kernel.SetArgument(5, static_cast(t_one)); + kernel.SetArgument(6, static_cast(t_two)); + kernel.SetArgument(7, static_cast(t_one)); + kernel.SetArgument(8, static_cast(0)); + kernel.SetArgument(9, t_buffer()); + kernel.SetArgument(10, static_cast(layout)); + if (rotated) { + kernel.SetArgument(11, static_cast(ku)); + kernel.SetArgument(12, static_cast(kl)); + } + else { + kernel.SetArgument(11, static_cast(kl)); + kernel.SetArgument(12, static_cast(ku)); + } + + // Uses the common matrix-transforms thread configuration + auto global = std::vector{Ceil(CeilDiv(t_one, db_["PAD_WPTX"]), db_["PAD_DIMX"]), + Ceil(CeilDiv(t_two, 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 Xgemv code + status = DoGemv(layout, a_transpose, m, n, alpha, + t_buffer, 0, t_one, + x_buffer, x_offset, x_inc, beta, + y_buffer, y_offset, y_inc); + + // Return the status of the Xgemv routine + return status; + } catch (...) { return StatusCode::kInvalidKernel; } + } catch (...) { return StatusCode::kTempBufferAllocFailure; } +} + +// ================================================================================================= + +// Compiles the templated class +template class Xgbmv; +template class Xgbmv; +template class Xgbmv; +template class Xgbmv; + +// ================================================================================================= +} // namespace clblast diff --git a/src/routines/level2/xgemv.cc b/src/routines/level2/xgemv.cc index f95a9957..e52d2f20 100644 --- a/src/routines/level2/xgemv.cc +++ b/src/routines/level2/xgemv.cc @@ -32,8 +32,10 @@ template Xgemv::Xgemv(Queue &queue, Event &event, const std::string &name): Routine(queue, event, name, {"Pad", "Xgemv"}, precision_) { source_string_ = - #include "../../kernels/pad.opencl" // For {Herm,Symm}{Upper,Lower}ToSquared (for HEMV/SYMV) - #include "../../kernels/xgemv.opencl" + #include "../../kernels/pad.opencl" // TODO: replace + #include "../../kernels/matrix_transforms/transforms.opencl" + #include "../../kernels/matrix_transforms/gbgemt.opencl" + #include "../../kernels/level2/xgemv.opencl" ; } -- cgit v1.2.3