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Diffstat (limited to 'src/tuning/kernels/xdot.hpp')
-rw-r--r-- | src/tuning/kernels/xdot.hpp | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/src/tuning/kernels/xdot.hpp b/src/tuning/kernels/xdot.hpp new file mode 100644 index 00000000..15673c79 --- /dev/null +++ b/src/tuning/kernels/xdot.hpp @@ -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 uses the auto-tuner to tune the xdot OpenCL kernels. Note that the results are +// not verified, since the result is not final and depends on the WGS2 parameter. +// +// ================================================================================================= + +#include <string> +#include <vector> + +#include "utilities/utilities.hpp" +#include "tuning/tuning.hpp" + +namespace clblast { +// ================================================================================================= + +// Settings for this kernel (default command-line arguments) +TunerDefaults XdotGetTunerDefaults(const int) { + auto settings = TunerDefaults(); + settings.options = {kArgN}; + settings.default_n = 2*1024*1024; + return settings; +} + +// Settings for this kernel (general) +template <typename T> +TunerSettings XdotGetTunerSettings(const int V, const Arguments<T> &args) { + auto settings = TunerSettings(); + + // Identification of the kernel + settings.kernel_family = "xdot_"+std::to_string(V); + settings.kernel_name = (V==1) ? "Xdot" : "XdotEpilogue"; + settings.sources = +#include "../src/kernels/level1/xdot.opencl" + ; + + // Buffer sizes + settings.size_x = args.n; + settings.size_y = args.n; + settings.size_temp = args.n; // Worst case + + // Inputs and outputs IDs (X:0, Y:1, A:2, B:3, C:4, temp:5) + settings.inputs = {0, 1, 5}; + settings.outputs = {}; // no output checking + + // Sets the base thread configuration + settings.global_size = (V==1) ? std::vector<size_t>{2*64} : std::vector<size_t>{1}; + settings.global_size_ref = (V==1) ? std::vector<size_t>{2*64*64} : std::vector<size_t>{64}; + settings.local_size = {1}; + settings.local_size_ref = {64}; + + // Transforms the thread configuration based on the parameters + settings.mul_local = (V==1) ? TransformVector{{"WGS1"}} : TransformVector{{"WGS2"}}; + settings.mul_global = (V==1) ? TransformVector{{"WGS1"}} : TransformVector{{"WGS2"}}; + + // Sets the tuning parameters and their possible values + settings.parameters = { + {"WGS"+std::to_string(V), {32, 64, 128, 256, 512, 1024}}, + }; + + // Describes how to compute the performance metrics + settings.metric_amount = (V==1) ? (2*args.n + 1) * GetBytes(args.precision) : 1 * GetBytes(args.precision); + settings.performance_unit = (V==1) ? "GB/s" : "N/A"; + + return settings; +} + +// Tests for valid arguments +template <typename T> +void XdotTestValidArguments(const int, const Arguments<T> &) { } +std::vector<Constraint> XdotSetConstraints(const int) { return {}; } + +// Sets the kernel's arguments +template <typename T> +void XdotSetArguments(const int V, Kernel &kernel, const Arguments<T> &args, std::vector<Buffer<T>>& buffers) { + if (V == 1) { + kernel.SetArgument(0, static_cast<int>(args.n)); + kernel.SetArgument(1, buffers[0]()); // 0 == X vector + kernel.SetArgument(2, 0); + kernel.SetArgument(3, 1); + kernel.SetArgument(4, buffers[1]()); // 1 == Y vector + kernel.SetArgument(5, 0); + kernel.SetArgument(6, 1); + kernel.SetArgument(7, buffers[5]()); // 5 == temp; no output checking - size varies + kernel.SetArgument(8, static_cast<int>(false)); + } + else { + kernel.SetArgument(0, buffers[5]()); // 5 == temp + kernel.SetArgument(1, buffers[0]()); // 0 == X vector; no output checking - size varies + kernel.SetArgument(2, 0); + } +} + +// ================================================================================================= +} // namespace clblast |