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// =================================================================================================
// 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 Xger class (see the header for information about the class).
//
// =================================================================================================
#include "internal/routines/level2/xger.h"
#include <string>
#include <vector>
namespace clblast {
// =================================================================================================
// Constructor: forwards to base class constructor
template <typename T>
Xger<T>::Xger(Queue &queue, EventPointer event, const std::string &name):
Routine(queue, event, name, {"Xger"}, PrecisionValue<T>()) {
source_string_ =
#include "../../kernels/level2/level2.opencl"
#include "../../kernels/level2/xger.opencl"
;
}
// =================================================================================================
// The main routine
template <typename T>
StatusCode Xger<T>::DoGer(const Layout layout,
const size_t m, const size_t n,
const T alpha,
const Buffer<T> &x_buffer, const size_t x_offset, const size_t x_inc,
const Buffer<T> &y_buffer, const size_t y_offset, const size_t y_inc,
const Buffer<T> &a_buffer, const size_t a_offset, const size_t a_ld) {
// Makes sure all dimensions are larger than zero
if (m == 0 || n == 0) { return StatusCode::kInvalidDimension; }
// Computes whether or not the matrix has an alternative layout (row or column-major).
const auto a_is_rowmajor = (layout == Layout::kRowMajor);
const auto a_one = (a_is_rowmajor) ? n : m;
const auto a_two = (a_is_rowmajor) ? m : n;
// Tests the matrix and the vectors for validity
auto status = TestMatrixA(a_one, a_two, a_buffer, a_offset, a_ld);
if (ErrorIn(status)) { return status; }
status = TestVectorX(m, x_buffer, x_offset, x_inc);
if (ErrorIn(status)) { return status; }
status = TestVectorY(n, y_buffer, y_offset, y_inc);
if (ErrorIn(status)) { return status; }
// Upload the scalar argument as a constant buffer to the device (needed for half-precision)
auto alpha_buffer = Buffer<T>(context_, 1);
alpha_buffer.Write(queue_, 1, &alpha);
// Retrieves the kernel from the compiled binary
try {
const auto program = GetProgramFromCache(context_, PrecisionValue<T>(), routine_name_);
auto kernel = Kernel(program, "Xger");
// Sets the kernel arguments
kernel.SetArgument(0, static_cast<int>(a_one));
kernel.SetArgument(1, static_cast<int>(a_two));
kernel.SetArgument(2, alpha_buffer());
kernel.SetArgument(3, x_buffer());
kernel.SetArgument(4, static_cast<int>(x_offset));
kernel.SetArgument(5, static_cast<int>(x_inc));
kernel.SetArgument(6, y_buffer());
kernel.SetArgument(7, static_cast<int>(y_offset));
kernel.SetArgument(8, static_cast<int>(y_inc));
kernel.SetArgument(9, a_buffer());
kernel.SetArgument(10, static_cast<int>(a_offset));
kernel.SetArgument(11, static_cast<int>(a_ld));
kernel.SetArgument(12, static_cast<int>(a_is_rowmajor));
// Launches the kernel
auto a_one_ceiled = Ceil(CeilDiv(a_one, db_["WPT"]), db_["WGS1"]);
auto a_two_ceiled = Ceil(CeilDiv(a_two, db_["WPT"]), db_["WGS2"]);
auto global = std::vector<size_t>{a_one_ceiled, a_two_ceiled};
auto local = std::vector<size_t>{db_["WGS1"], db_["WGS2"]};
status = RunKernel(kernel, queue_, device_, global, local, event_);
if (ErrorIn(status)) { return status; }
// Succesfully finished the computation
return StatusCode::kSuccess;
} catch (...) { return StatusCode::kInvalidKernel; }
}
// =================================================================================================
// Compiles the templated class
template class Xger<half>;
template class Xger<float>;
template class Xger<double>;
template class Xger<float2>;
template class Xger<double2>;
// =================================================================================================
} // namespace clblast
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