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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 common routine functions (see the header for more information).
//
// =================================================================================================
#include <vector>
#include <chrono>
#include "routines/common.hpp"
namespace clblast {
// =================================================================================================
// Enqueues a kernel, waits for completion, and checks for errors
StatusCode RunKernel(Kernel &kernel, Queue &queue, const Device &device,
std::vector<size_t> global, const std::vector<size_t> &local,
EventPointer event, const std::vector<Event> &waitForEvents) {
// Tests for validity of the local thread sizes
if (local.size() > device.MaxWorkItemDimensions()) {
return StatusCode::kInvalidLocalNumDimensions;
}
const auto max_work_item_sizes = device.MaxWorkItemSizes();
for (auto i=size_t{0}; i<local.size(); ++i) {
if (local[i] > max_work_item_sizes[i]) { return StatusCode::kInvalidLocalThreadsDim; }
}
auto local_size = size_t{1};
for (auto &item: local) { local_size *= item; }
if (local_size > device.MaxWorkGroupSize()) { return StatusCode::kInvalidLocalThreadsTotal; }
// Make sure the global thread sizes are at least equal to the local sizes
for (auto i=size_t{0}; i<global.size(); ++i) {
if (global[i] < local[i]) { global[i] = local[i]; }
}
// Tests for local memory usage
const auto local_mem_usage = kernel.LocalMemUsage(device);
if (!device.IsLocalMemoryValid(local_mem_usage)) { return StatusCode::kInvalidLocalMemUsage; }
// Prints the name of the kernel to launch in case of debugging in verbose mode
#ifdef VERBOSE
queue.Finish();
printf("[DEBUG] Running kernel '%s'\n", kernel.GetFunctionName().c_str());
const auto start_time = std::chrono::steady_clock::now();
#endif
// Launches the kernel (and checks for launch errors)
try {
kernel.Launch(queue, global, local, event, waitForEvents);
} catch (...) { return StatusCode::kKernelLaunchError; }
// Prints the elapsed execution time in case of debugging in verbose mode
#ifdef VERBOSE
queue.Finish();
const auto elapsed_time = std::chrono::steady_clock::now() - start_time;
const auto timing = std::chrono::duration<double,std::milli>(elapsed_time).count();
printf("[DEBUG] Completed kernel in %.2lf ms\n", timing);
#endif
// No errors, normal termination of this function
return StatusCode::kSuccess;
}
// As above, but without an event waiting list
StatusCode RunKernel(Kernel &kernel, Queue &queue, const Device &device,
std::vector<size_t> global, const std::vector<size_t> &local,
EventPointer event) {
auto emptyWaitingList = std::vector<Event>();
return RunKernel(kernel, queue, device, global, local, event, emptyWaitingList);
}
// =================================================================================================
} // namespace clblast
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