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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 uses the CLTune auto-tuner to tune the xger OpenCL kernels.
//
// =================================================================================================
#include <string>
#include <vector>
#include "utilities.hpp"
#include "tuning/tuning.hpp"
namespace clblast {
// =================================================================================================
// See comment at top of file for a description of the class
template <typename T>
class TuneXger {
public:
// The representative kernel and the source code
static std::string KernelFamily() { return "xger"; }
static std::string KernelName() { return "Xger"; }
static std::string GetSources() {
return
#include "../src/kernels/common.opencl"
#include "../src/kernels/level2/level2.opencl"
#include "../src/kernels/level2/xger.opencl"
;
}
// The list of arguments relevant for this routine
static std::vector<std::string> GetOptions() { return {kArgN, kArgM, kArgAlpha}; }
// Tests for valid arguments
static void TestValidArguments(const Arguments<T> &) { }
// Sets the default values for the arguments
static size_t DefaultM() { return 1024; }
static size_t DefaultN() { return 1024; }
static size_t DefaultK() { return 1; } // N/A for this kernel
static double DefaultFraction() { return 1.0; } // N/A for this kernel
// Describes how to obtain the sizes of the buffers
static size_t GetSizeX(const Arguments<T> &args) { return args.m; }
static size_t GetSizeY(const Arguments<T> &args) { return args.n; }
static size_t GetSizeA(const Arguments<T> &args) { return args.m * args.n; }
static size_t GetSizeB(const Arguments<T> &) { return 1; } // N/A for this kernel
static size_t GetSizeC(const Arguments<T> &) { return 1; } // N/A for this kernel
static size_t GetSizeTemp(const Arguments<T> &) { return 1; } // N/A for this kernel
// Sets the tuning parameters and their possible values
static void SetParameters(cltune::Tuner &tuner, const size_t id) {
tuner.AddParameter(id, "WGS1", {4, 8, 16, 32, 64, 128, 256, 512});
tuner.AddParameter(id, "WGS2", {1, 2, 4, 8, 16, 32, 64, 128, 256});
tuner.AddParameter(id, "WPT", {1, 2, 4});
}
// Sets the constraints and local memory size
static void SetConstraints(cltune::Tuner &, const size_t) { }
static void SetLocalMemorySize(cltune::Tuner &, const size_t, const Arguments<T> &) { }
// Sets the base thread configuration
static std::vector<size_t> GlobalSize(const Arguments<T> &args) { return {args.m, args.n}; }
static std::vector<size_t> GlobalSizeRef(const Arguments<T> &args) { return GlobalSize(args); }
static std::vector<size_t> LocalSize() { return {1, 1}; }
static std::vector<size_t> LocalSizeRef() { return {8, 8}; }
// Transforms the thread configuration based on the parameters
using TransformVector = std::vector<std::vector<std::string>>;
static TransformVector MulLocal() { return {{"WGS1", "WGS2"}}; }
static TransformVector DivLocal() { return {}; }
static TransformVector MulGlobal() { return {}; }
static TransformVector DivGlobal() { return {{"WPT", "WPT"}}; }
// Sets the kernel's arguments
static void SetArguments(cltune::Tuner &tuner, const Arguments<T> &args,
std::vector<T> &x_vec, std::vector<T> &y_vec,
std::vector<T> &a_mat, std::vector<T> &, std::vector<T> &,
std::vector<T> &) {
tuner.AddArgumentScalar(static_cast<int>(args.m));
tuner.AddArgumentScalar(static_cast<int>(args.n));
tuner.AddArgumentScalar(GetRealArg(args.alpha));
tuner.AddArgumentInput(x_vec);
tuner.AddArgumentScalar(0); // x_offset
tuner.AddArgumentScalar(1); // x_increment
tuner.AddArgumentInput(y_vec);
tuner.AddArgumentScalar(0); // y_offset
tuner.AddArgumentScalar(1); // y_increment
tuner.AddArgumentOutput(a_mat);
tuner.AddArgumentScalar(0); // a_offset
tuner.AddArgumentScalar(static_cast<int>(args.m)); // a_ld
tuner.AddArgumentScalar(0); // a_is_rowmajor
}
// Describes how to compute the performance metrics
static size_t GetMetric(const Arguments<T> &args) {
return (2*args.m*args.n + args.m + args.n) * GetBytes(args.precision);
}
static std::string PerformanceUnit() { return "GB/s"; }
};
// =================================================================================================
} // namespace clblast
// Shortcuts to the clblast namespace
using float2 = clblast::float2;
using double2 = clblast::double2;
// Main function (not within the clblast namespace)
int main(int argc, char *argv[]) {
switch(clblast::GetPrecision(argc, argv)) {
case clblast::Precision::kHalf: clblast::Tuner<clblast::TuneXger<half>, half>(argc, argv); break;
case clblast::Precision::kSingle: clblast::Tuner<clblast::TuneXger<float>, float>(argc, argv); break;
case clblast::Precision::kDouble: clblast::Tuner<clblast::TuneXger<double>, double>(argc, argv); break;
case clblast::Precision::kComplexSingle: clblast::Tuner<clblast::TuneXger<float2>, float2>(argc, argv); break;
case clblast::Precision::kComplexDouble: clblast::Tuner<clblast::TuneXger<double2>, double2>(argc, argv); break;
}
return 0;
}
// =================================================================================================
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