| /* |
| * Copyright (c) 2016-2018 ARM Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| #include "arm_compute/runtime/CL/CLScheduler.h" |
| |
| #include "arm_compute/core/CL/ICLKernel.h" |
| #include "arm_compute/runtime/CL/CLTuner.h" |
| #include "arm_compute/runtime/CL/tuners/Tuners.h" |
| |
| using namespace arm_compute; |
| |
| namespace |
| { |
| #if defined(ARM_COMPUTE_DEBUG_ENABLED) |
| void printf_callback(const char *buffer, unsigned int len, size_t complete, void *user_data) |
| { |
| printf("%.*s", len, buffer); |
| } |
| #endif /* defined(ARM_COMPUTE_DEBUG_ENABLED) */ |
| } // namespace |
| |
| std::once_flag CLScheduler::_initialize_symbols; |
| |
| CLScheduler::CLScheduler() |
| : _context(), _queue(), _target(GPUTarget::MIDGARD), _is_initialised(false), _cl_tuner(nullptr), _cl_default_static_tuner(nullptr) |
| { |
| } |
| |
| CLScheduler &CLScheduler::get() |
| { |
| std::call_once(_initialize_symbols, opencl_is_available); |
| static CLScheduler scheduler; |
| return scheduler; |
| } |
| |
| void CLScheduler::default_init(ICLTuner *cl_tuner) |
| { |
| if(!_is_initialised) |
| { |
| std::vector<cl::Platform> platforms; |
| cl::Platform::get(&platforms); |
| ARM_COMPUTE_ERROR_ON_MSG(platforms.size() == 0, "Couldn't find any OpenCL platform"); |
| cl::Platform p = platforms[0]; |
| cl::Context ctx; |
| cl::Device device; |
| std::vector<cl::Device> platform_devices; |
| p.getDevices(CL_DEVICE_TYPE_DEFAULT, &platform_devices); |
| ARM_COMPUTE_ERROR_ON_MSG(platform_devices.size() == 0, "Couldn't find any OpenCL device"); |
| device = platform_devices[0]; |
| #if defined(ARM_COMPUTE_DEBUG_ENABLED) |
| |
| // Query devices in the context for cl_arm_printf support |
| if(device_supports_extension(device, "cl_arm_printf")) |
| { |
| // Create a cl_context with a printf_callback and user specified buffer size. |
| cl_context_properties properties[] = |
| { |
| CL_CONTEXT_PLATFORM, reinterpret_cast<cl_context_properties>(p()), |
| // Enable a printf callback function for this context. |
| CL_PRINTF_CALLBACK_ARM, reinterpret_cast<cl_context_properties>(printf_callback), |
| // Request a minimum printf buffer size of 4MB for devices in the |
| // context that support this extension. |
| CL_PRINTF_BUFFERSIZE_ARM, 0x1000, |
| 0 |
| }; |
| ctx = cl::Context(device, properties); |
| } |
| else |
| #endif // defined(ARM_COMPUTE_DEBUG_ENABLED) |
| { |
| cl_context_properties properties[] = |
| { |
| CL_CONTEXT_PLATFORM, reinterpret_cast<cl_context_properties>(p()), |
| 0 |
| }; |
| ctx = cl::Context(device, properties); |
| }; |
| |
| cl::CommandQueue queue = cl::CommandQueue(ctx, device); |
| CLKernelLibrary::get().init("./cl_kernels/", ctx, device); |
| init(ctx, queue, device, cl_tuner); |
| |
| // Create a default static tuner and set if none was provided |
| _cl_default_static_tuner = tuners::TunerFactory::create_tuner(_target); |
| } |
| |
| // Set CL tuner |
| _cl_tuner = (cl_tuner == nullptr) ? _cl_default_static_tuner.get() : cl_tuner; |
| } |
| |
| void CLScheduler::enqueue(ICLKernel &kernel, bool flush) |
| { |
| ARM_COMPUTE_ERROR_ON_MSG(!_is_initialised, |
| "The CLScheduler is not initialised yet! Please call the CLScheduler::get().default_init(), \ |
| or CLScheduler::get()::init() and CLKernelLibrary::get()::init() function before running functions!"); |
| |
| // Tune the kernel if the CLTuner has been provided |
| if(_cl_tuner != nullptr) |
| { |
| // Tune the OpenCL kernel |
| _cl_tuner->tune_kernel_dynamic(kernel); |
| } |
| |
| // Run kernel |
| kernel.run(kernel.window(), _queue); |
| |
| if(flush) |
| { |
| _queue.flush(); |
| } |
| } |