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Since the codebase is designed around proper C++ idioms such as RAII, it makes sense to only use C++ exceptions internally instead of mixing exceptions and error codes. The exceptions are now caught at top level to preserve compatibility with the existing error code-based API. Note that we deliberately do not catch C++ runtime errors (such as `std::bad_alloc`) nor logic errors (aka failed assertions) because no actual handling can ever happen for such errors. However, in the C interface we do catch _all_ exceptions (...) and convert them into a wild-card error code.
77 lines
3 KiB
C++
77 lines
3 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 implements the common routine functions (see the header for more information).
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//
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// =================================================================================================
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#include <vector>
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#include <chrono>
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#include "routines/common.hpp"
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namespace clblast {
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// =================================================================================================
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// Enqueues a kernel, waits for completion, and checks for errors
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void RunKernel(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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EventPointer event, const std::vector<Event> &waitForEvents) {
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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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// Prints the name of the kernel to launch in case of debugging in verbose mode
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#ifdef VERBOSE
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queue.Finish();
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printf("[DEBUG] Running kernel '%s'\n", kernel.GetFunctionName().c_str());
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const auto start_time = std::chrono::steady_clock::now();
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#endif
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// Launches the kernel (and checks for launch errors)
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kernel.Launch(queue, global, local, event, waitForEvents);
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// Prints the elapsed execution time in case of debugging in verbose mode
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#ifdef VERBOSE
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queue.Finish();
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const auto elapsed_time = std::chrono::steady_clock::now() - start_time;
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const auto timing = std::chrono::duration<double,std::milli>(elapsed_time).count();
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printf("[DEBUG] Completed kernel in %.2lf ms\n", timing);
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#endif
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}
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// =================================================================================================
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} // namespace clblast
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