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/*
* Copyright (c) 2017-2018 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.
*/
#ifndef __ARM_COMPUTE_CLTUNER_H__
#define __ARM_COMPUTE_CLTUNER_H__
#include "arm_compute/core/CL/OpenCL.h"
#include "arm_compute/runtime/CL/ICLTuner.h"
#include <unordered_map>
namespace arm_compute
{
class ICLKernel;
/** Basic implementation of the OpenCL tuner interface */
class CLTuner : public ICLTuner
{
public:
/** Constructor */
CLTuner();
/** Destructor */
~CLTuner() = default;
/** Import LWS table
*
* @param[in] lws_table The unordered_map container to import
*/
void import_lws_table(const std::unordered_map<std::string, cl::NDRange> &lws_table);
/** Export LWS table
*
* return The lws table as unordered_map container
*/
const std::unordered_map<std::string, cl::NDRange> &export_lws_table();
// Inherited methods overridden:
void tune_kernel(ICLKernel &kernel) override;
/** Set the OpenCL kernel event
*
* @note The interceptor can use this function to store the event associated to the OpenCL kernel
*
* @param[in] kernel_event The OpenCL kernel event
*/
void set_cl_kernel_event(cl_event kernel_event);
std::function<decltype(clEnqueueNDRangeKernel)> real_function;
private:
/** Find optimal LWS using brute-force approach
*
* @param[in] kernel OpenCL kernel to be tuned with LWS
*
* @return The optimal LWS to use
*/
cl::NDRange find_optimal_lws(ICLKernel &kernel);
std::unordered_map<std::string, cl::NDRange> _lws_table;
cl::CommandQueue _queue;
cl::CommandQueue _queue_profiler;
cl::Event _kernel_event;
};
/* Function to be used to intercept kernel enqueues and store their OpenCL Event */
class Interceptor
{
public:
explicit Interceptor(CLTuner &tuner);
/** clEnqueueNDRangeKernel interface
*
* @param[in] command_queue A valid command-queue. The kernel will be queued for execution on the device associated with command_queue.
* @param[in] kernel A valid kernel object. The OpenCL context associated with kernel and command_queue must be the same.
* @param[in] work_dim The number of dimensions used to specify the global work-items and work-items in the work-group. work_dim must be greater than zero and less than or equal to CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS.
* @param[in] gwo Global-Workgroup-Offset. It can be used to specify an array of work_dim unsigned values that describe the offset used to calculate the global ID of a work-item. If global_work_offset is NULL, the global IDs start at offset (0, 0, ... 0).
* @param[in] gws Global-Workgroup-Size. Points to an array of work_dim unsigned values that describe the number of global work-items in work_dim dimensions that will execute the kernel function.
* @param[in] lws Local-Workgroup-Size. Points to an array of work_dim unsigned values that describe the number of work-items that make up a work-group
* @param[in] num_events_in_wait_list Number of events in the waiting list
* @param[in] event_wait_list Event waiting list
* @param[in] event OpenCL kernel event
*
* @return the OpenCL status
*/
cl_int operator()(cl_command_queue command_queue, cl_kernel kernel, cl_uint work_dim, const size_t *gwo, const size_t *gws, const size_t *lws, cl_uint num_events_in_wait_list,
const cl_event *event_wait_list, cl_event *event);
private:
CLTuner &_tuner;
};
}
#endif /*__ARM_COMPUTE_CLTUNER_H__ */
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