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/*
* Copyright (c) 2020-2022 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_CLDEVICE_H
#define ARM_COMPUTE_CLDEVICE_H
#include "arm_compute/core/CL/CLHelpers.h"
#include "arm_compute/core/CL/CLTypes.h"
#include "arm_compute/core/GPUTarget.h"
#include "arm_compute/core/IDevice.h"
#include <set>
#include <sstream>
#include <string>
namespace arm_compute
{
/** OpenCL device type class
*
* Initializes and stores all the information about a cl device,
* working mainly as a cache mechanism.
* */
class CLDevice : public IDevice
{
public:
/** Default Constructor */
CLDevice() : _device(cl::Device()), _options()
{
}
/** Constructor
*
* @param[in] cl_device OpenCL device
*/
CLDevice(const cl::Device &cl_device) : _device(), _options()
{
_device = cl_device;
// Get device target
std::string device_name = _device.getInfo<CL_DEVICE_NAME>();
_options.gpu_target = get_target_from_name(device_name);
// Fill extensions
std::string extensions = _device.getInfo<CL_DEVICE_EXTENSIONS>();
std::istringstream iss(extensions);
for (std::string s; iss >> s;)
{
_options.extensions.insert(s);
}
// SW workaround for G76
if (_options.gpu_target == GPUTarget::G76)
{
_options.extensions.insert("cl_arm_integer_dot_product_int8");
}
// Get device version
_options.version = get_cl_version(_device);
// Get compute units
_options.compute_units = _device.getInfo<CL_DEVICE_MAX_COMPUTE_UNITS>();
// Get device version
_options.device_version = _device.getInfo<CL_DEVICE_VERSION>();
}
/** Returns the GPU target of the cl device
*
* @return The GPU target
*/
const GPUTarget &target() const
{
return _options.gpu_target;
}
/** Returns the number of compute units available
*
* @return Number of compute units
*/
size_t compute_units() const
{
return _options.compute_units;
}
/** Returns the underlying cl device object
*
* @return A cl device
*/
const cl::Device &cl_device() const
{
return _device;
}
/** Returns the device's CL version
*
* @return CLVersion of the device
*/
CLVersion version() const
{
return _options.version;
}
/** Returns the device version as a string
*
* @return CLVersion of the device
*/
std::string device_version() const
{
return _options.device_version;
}
// Inherrited methods
DeviceType type() const override
{
return DeviceType::CL;
}
bool supported(const std::string &extension) const override
{
return _options.extensions.count(extension) != 0;
}
/** Returns whether non-uniform workgroup is supported and the build options.
*
* If the feature is supported, the appropriate build options will be
* appended to the specified string.
*
* @return A tuple (supported, build_options) indicating whether the feature
* is supported and the corresponding build options to enable it.
*/
std::tuple<bool, std::string> is_non_uniform_workgroup_supported() const
{
if (version() == CLVersion::CL30 && get_cl_non_uniform_work_group_supported(_device))
{
return {true, " -cl-std=CL3.0 "};
}
else if (version() == CLVersion::CL20)
{
return {true, " -cl-std=CL2.0 "};
}
else if (supported("cl_arm_non_uniform_work_group_size"))
{
return {true, " -cl-arm-non-uniform-work-group-size "};
}
return {false, ""};
}
private:
cl::Device _device; /**< OpenCL device. */
struct CLDeviceOptions _options; /**< OpenCL device options */
};
} // namespace arm_compute
#endif /* ARM_COMPUTE_CLDEVICE_H */
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