81 lines
2.9 KiB
C++
81 lines
2.9 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 provides helper functions for time measurement and such.
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//
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// =================================================================================================
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#include <cstdio>
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#include <exception>
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#include "utilities/timing.hpp"
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namespace clblast {
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// =================================================================================================
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double RunKernelTimed(const size_t num_runs, Kernel &kernel, Queue &queue, const Device &device,
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std::vector<size_t> global, const std::vector<size_t> &local) {
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auto event = Event();
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if (!local.empty()) {
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// Tests for validity of the local thread sizes
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if (local.size() > device.MaxWorkItemDimensions()) {
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throw RuntimeErrorCode(StatusCode::kInvalidLocalNumDimensions);
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}
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const auto max_work_item_sizes = device.MaxWorkItemSizes();
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for (auto i=size_t{0}; i<local.size(); ++i) {
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if (local[i] > max_work_item_sizes[i]) {
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throw RuntimeErrorCode(StatusCode::kInvalidLocalThreadsDim);
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}
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}
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auto local_size = size_t{1};
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for (auto &item: local) { local_size *= item; }
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if (local_size > device.MaxWorkGroupSize()) {
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throw RuntimeErrorCode(StatusCode::kInvalidLocalThreadsTotal);
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}
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// Make sure the global thread sizes are at least equal to the local sizes
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for (auto i=size_t{0}; i<global.size(); ++i) {
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if (global[i] < local[i]) { global[i] = local[i]; }
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}
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}
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// Tests for local memory usage
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const auto local_mem_usage = kernel.LocalMemUsage(device);
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if (!device.IsLocalMemoryValid(local_mem_usage)) {
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throw RuntimeErrorCode(StatusCode::kInvalidLocalMemUsage);
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}
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// Times the kernel
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const auto run_kernel_func = [&]() {
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kernel.Launch(queue, global, local, event.pointer());
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event.WaitForCompletion();
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queue.Finish();
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};
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return TimeFunction(num_runs, run_kernel_func);
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}
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double TimeKernel(const size_t num_runs, Kernel &kernel, Queue &queue, const Device &device,
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std::vector<size_t> global, const std::vector<size_t> &local,
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const bool silent) {
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try {
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const auto time_ms = RunKernelTimed(num_runs, kernel, queue, device, global, local);
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if (!silent) { printf(" %9.2lf ms |", time_ms); }
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return time_ms;
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}
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catch (...) {
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const auto status_code = DispatchExceptionCatchAll(true);
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if (!silent) { printf(" error %-5d |", static_cast<int>(status_code)); }
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return -1.0; // invalid
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}
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}
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// =================================================================================================
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} // namespace clblast
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