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Diffstat (limited to 'src/routines/level1/xnrm2.cpp')
-rw-r--r-- | src/routines/level1/xnrm2.cpp | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/src/routines/level1/xnrm2.cpp b/src/routines/level1/xnrm2.cpp new file mode 100644 index 00000000..97615d8b --- /dev/null +++ b/src/routines/level1/xnrm2.cpp @@ -0,0 +1,102 @@ + +// ================================================================================================= +// 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 "routines/level1/xnrm2.hpp" + +#include <string> +#include <vector> + +namespace clblast { +// ================================================================================================= + +// Constructor: forwards to base class constructor +template <typename T> +Xnrm2<T>::Xnrm2(Queue &queue, EventPointer event, const std::string &name): + Routine(queue, event, name, {"Xdot"}, PrecisionValue<T>()) { + 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); + if (ErrorIn(status)) { return status; } + status = TestVectorScalar(1, nrm2_buffer, nrm2_offset); + if (ErrorIn(status)) { return status; } + + // Retrieves the Xnrm2 kernels from the compiled binary + try { + const auto program = GetProgramFromCache(context_, PrecisionValue<T>(), routine_name_); + 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()); + + // Event waiting list + auto eventWaitList = std::vector<Event>(); + + // Launches the main kernel + auto global1 = std::vector<size_t>{db_["WGS1"]*temp_size}; + auto local1 = std::vector<size_t>{db_["WGS1"]}; + auto kernelEvent = Event(); + status = RunKernel(kernel1, queue_, device_, global1, local1, kernelEvent.pointer()); + if (ErrorIn(status)) { return status; } + eventWaitList.push_back(kernelEvent); + + // 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, queue_, device_, global2, local2, event_, eventWaitList); + if (ErrorIn(status)) { return status; } + + // Succesfully finished the computation + return StatusCode::kSuccess; + } catch (...) { return StatusCode::kInvalidKernel; } +} + +// ================================================================================================= + +// Compiles the templated class +template class Xnrm2<half>; +template class Xnrm2<float>; +template class Xnrm2<double>; +template class Xnrm2<float2>; +template class Xnrm2<double2>; + +// ================================================================================================= +} // namespace clblast |