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https://github.com/CNugteren/CLBlast.git
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221121b840
This replaces the old Travis CI builds with Github Actions that test on both Ubuntu and MacOS, with both Clang and GCC. The builds on macOS also run the tests and some other programs, on Ubuntu OpenCL is not working at the moment. Because these tests use new/different compilers, I fixed a few warnings and errors along the way.
81 lines
3.1 KiB
C++
81 lines
3.1 KiB
C++
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// =================================================================================================
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// This file is part of the CLBlast project. The project is licensed under Apache Version 2.0. This
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// project loosely follows the Google C++ styleguide and uses a tab-size of two spaces and a max-
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// width of 100 characters per line.
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//
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// Author(s):
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// Cedric Nugteren <www.cedricnugteren.nl>
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//
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// This file demonstrates the use of the runtime tuning API. It is a stand-alone example, but it
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// does require the Khronos C++ OpenCL API header file (downloaded by CMake).
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//
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// =================================================================================================
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#include <cstdio>
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#include <chrono>
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#include <vector>
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#define CL_USE_DEPRECATED_OPENCL_1_1_APIS // to disable deprecation warnings
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#define CL_USE_DEPRECATED_OPENCL_1_2_APIS // to disable deprecation warnings
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// Includes the C++ OpenCL API. If not yet available, it can be found here:
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// https://raw.githubusercontent.com/KhronosGroup/OpenCL-CLHPP/main/include/CL/opencl.hpp
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#define CL_HPP_TARGET_OPENCL_VERSION 120
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#define CL_HPP_MINIMUM_OPENCL_VERSION 120
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#define CL_TARGET_OPENCL_VERSION 120
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#include "opencl.hpp"
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// Includes the CLBlast library
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#include <clblast.h>
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// =================================================================================================
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int main() {
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// OpenCL platform/device settings
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const auto platform_id = 0;
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const auto device_id = 0;
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// Example arguments
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const size_t m = 128;
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const size_t n = 64;
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const auto fraction = 1.0; // between 0.0 and 1.0
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// Initializes the OpenCL platform
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auto platforms = std::vector<cl::Platform>();
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cl::Platform::get(&platforms);
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if (platforms.size() == 0 || platform_id >= platforms.size()) { return 1; }
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auto platform = platforms[platform_id];
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// Initializes the OpenCL device
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auto devices = std::vector<cl::Device>();
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platform.getDevices(CL_DEVICE_TYPE_ALL, &devices);
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if (devices.size() == 0 || device_id >= devices.size()) { return 1; }
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auto device = devices[device_id];
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// Creates the OpenCL context, queue, and an event
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auto device_as_vector = std::vector<cl::Device>{device};
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auto context = cl::Context(device_as_vector);
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auto queue = cl::CommandQueue(context, device);
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// Performs the tuning
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printf("Starting the tuning...\n");
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std::unordered_map<std::string,size_t> parameters;
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auto queue_plain = queue();
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auto status = clblast::TuneCopy<float>(&queue_plain, m, n, fraction, parameters);
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// Tuning completed. See "clblast.h" for status codes (0 -> success).
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printf("Completed TuneCopy with status %d (0 == OK), found parameters:\n", static_cast<int>(status));
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for (const auto ¶meter: parameters) {
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printf("> %s = %zu\n", parameter.first.c_str(), parameter.second);
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}
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// Set the new parameters
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status = clblast::OverrideParameters(device(), "Copy", clblast::Precision::kSingle, parameters);
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printf("Completed OverrideParameters with status %d (0 == OK)\n", static_cast<int>(status));
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return 0;
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}
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// =================================================================================================
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