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/*
* Copyright (c) 2017-2019 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
*
* @param[in] tune_new_kernels Find the optimal local workgroup size for kernels which are not present in the table ?
*
*/
CLTuner(bool tune_new_kernels = true);
/** Destructor */
~CLTuner() = default;
/** Setter for tune_new_kernels option
*
* @param[in] tune_new_kernels Find the optimal local workgroup size for kernels which are not present in the table ?
*/
void set_tune_new_kernels(bool tune_new_kernels);
/** Tune kernels that are not in the LWS table
*
* @return True if tuning of new kernels is enabled.
*/
bool tune_new_kernels() const;
/** Manually add a LWS for a kernel
*
* @param[in] kernel_id Unique identifiant of the kernel
* @param[in] optimal_lws Optimal local workgroup size to use for the given kernel
*/
void add_lws_to_table(const std::string &kernel_id, cl::NDRange optimal_lws);
/** 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);
/** Give read access to the LWS table
*
* @return The lws table as unordered_map container
*/
const std::unordered_map<std::string, cl::NDRange> &lws_table() const;
/** 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);
/** clEnqueueNDRangeKernel symbol */
std::function<decltype(clEnqueueNDRangeKernel)> real_clEnqueueNDRangeKernel;
/** Load the LWS table from file
*
* @param[in] filename Load the LWS table from this file.(Must exist)
*/
void load_from_file(const std::string &filename);
/** Save the content of the LWS table to file
*
* @param[in] filename Save the LWS table to this file. (Content will be overwritten)
*/
void save_to_file(const std::string &filename) const;
// Inherited methods overridden:
void tune_kernel_static(ICLKernel &kernel) override;
void tune_kernel_dynamic(ICLKernel &kernel) override;
/** Is the kernel_event set ?
*
* @return true if the kernel_event is set.
*/
bool kernel_event_is_set() const;
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::Event _kernel_event;
bool _tune_new_kernels;
};
} // namespace arm_compute
#endif /*__ARM_COMPUTE_CLTUNER_H__ */
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