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author | Cedric Nugteren <web@cedricnugteren.nl> | 2016-03-28 23:00:44 +0200 |
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committer | Cedric Nugteren <web@cedricnugteren.nl> | 2016-03-28 23:00:44 +0200 |
commit | aaa687ca984b18bd1ea499c92285b490fd78e2a3 (patch) | |
tree | 3210d6aa484a866cbafc9351baf49e5f0aab4ca3 /src/routines/level1/xnrm2.cc | |
parent | 1d5a702d9d31afa320a15ed9fa79471aec314f4a (diff) |
Added preliminary support for the xNRM2 routines
Diffstat (limited to 'src/routines/level1/xnrm2.cc')
-rw-r--r-- | src/routines/level1/xnrm2.cc | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/routines/level1/xnrm2.cc b/src/routines/level1/xnrm2.cc new file mode 100644 index 00000000..064e68bf --- /dev/null +++ b/src/routines/level1/xnrm2.cc @@ -0,0 +1,107 @@ + +// ================================================================================================= +// 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 <www.cedricnugteren.nl> +// +// This file implements the Xnrm2 class (see the header for information about the class). +// +// ================================================================================================= + +#include "internal/routines/level1/xnrm2.h" + +#include <string> +#include <vector> + +namespace clblast { +// ================================================================================================= + +// Specific implementations to get the memory-type based on a template argument +template <> const Precision Xnrm2<float>::precision_ = Precision::kSingle; +template <> const Precision Xnrm2<double>::precision_ = Precision::kDouble; +template <> const Precision Xnrm2<float2>::precision_ = Precision::kComplexSingle; +template <> const Precision Xnrm2<double2>::precision_ = Precision::kComplexDouble; + +// ================================================================================================= + +// Constructor: forwards to base class constructor +template <typename T> +Xnrm2<T>::Xnrm2(Queue &queue, Event &event, const std::string &name): + Routine<T>(queue, event, name, {"Xdot"}, precision_) { + source_string_ = + #include "../../kernels/level1/xnrm2.opencl" + ; +} + +// ================================================================================================= + +// The main routine +template <typename T> +StatusCode Xnrm2<T>::DoNrm2(const size_t n, + const Buffer<T> &nrm2_buffer, const size_t nrm2_offset, + const Buffer<T> &x_buffer, const size_t x_offset, const size_t x_inc) { + + // Makes sure all dimensions are larger than zero + if (n == 0) { return StatusCode::kInvalidDimension; } + + // Tests the vectors for validity + auto status = TestVectorX(n, x_buffer, x_offset, x_inc, sizeof(T)); + if (ErrorIn(status)) { return status; } + status = TestVectorDot(1, nrm2_buffer, nrm2_offset, sizeof(T)); + if (ErrorIn(status)) { return status; } + + // Retrieves the Xnrm2 kernels from the compiled binary + try { + auto& program = GetProgramFromCache(); + auto kernel1 = Kernel(program, "Xnrm2"); + auto kernel2 = Kernel(program, "Xnrm2Epilogue"); + + // Creates the buffer for intermediate values + auto temp_size = 2*db_["WGS2"]; + auto temp_buffer = Buffer<T>(context_, temp_size); + + // Sets the kernel arguments + kernel1.SetArgument(0, static_cast<int>(n)); + kernel1.SetArgument(1, x_buffer()); + kernel1.SetArgument(2, static_cast<int>(x_offset)); + kernel1.SetArgument(3, static_cast<int>(x_inc)); + kernel1.SetArgument(4, temp_buffer()); + + // Launches the main kernel + auto global1 = std::vector<size_t>{db_["WGS1"]*temp_size}; + auto local1 = std::vector<size_t>{db_["WGS1"]}; + status = RunKernel(kernel1, global1, local1); + if (ErrorIn(status)) { return status; } + + // Sets the arguments for the epilogue kernel + kernel2.SetArgument(0, temp_buffer()); + kernel2.SetArgument(1, nrm2_buffer()); + kernel2.SetArgument(2, static_cast<int>(nrm2_offset)); + + // Launches the epilogue kernel + auto global2 = std::vector<size_t>{db_["WGS2"]}; + auto local2 = std::vector<size_t>{db_["WGS2"]}; + status = RunKernel(kernel2, global2, local2); + if (ErrorIn(status)) { return status; } + + // Waits for all kernels to finish + queue_.Finish(); + + // Succesfully finished the computation + return StatusCode::kSuccess; + } catch (...) { return StatusCode::kInvalidKernel; } +} + +// ================================================================================================= + +// Compiles the templated class +template class Xnrm2<float>; +template class Xnrm2<double>; +template class Xnrm2<float2>; +template class Xnrm2<double2>; + +// ================================================================================================= +} // namespace clblast |