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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// See LICENSE file in the project root for full license information.
//
#include "ClContextControl.hpp"
#include "armnn/Exceptions.hpp"
#ifdef ARMCOMPUTECL_ENABLED
#include <arm_compute/core/CL/CLKernelLibrary.h>
#include <arm_compute/runtime/CL/CLScheduler.h>
#endif
#include <boost/assert.hpp>
#include <boost/format.hpp>
#include <boost/log/trivial.hpp>
#include <boost/polymorphic_cast.hpp>
#include "LeakChecking.hpp"
namespace cl
{
class Context;
class CommandQueue;
class Device;
}
namespace armnn
{
ClContextControl::ClContextControl(IClTunedParameters* clTunedParameters)
: m_clTunedParameters(boost::polymorphic_downcast<ClTunedParameters*>(clTunedParameters))
{
#ifdef ARMCOMPUTECL_ENABLED
try
{
std::vector<cl::Platform> platforms;
cl::Platform::get(&platforms);
// Select default platform as the first element
cl::Platform::setDefault(platforms[0]);
std::vector<cl::Device> devices;
platforms[0].getDevices(CL_DEVICE_TYPE_GPU, &devices);
// Select default device as the first element
cl::Device::setDefault(devices[0]);
}
catch (const cl::Error& clError)
{
throw ClRuntimeUnavailableException(boost::str(boost::format(
"Could not initialize the CL runtime. Error description: %1%. CL error code: %2%"
) % clError.what() % clError.err()));
}
// Remove the use of global CL context
cl::Context::setDefault(cl::Context{});
BOOST_ASSERT(cl::Context::getDefault()() == NULL);
// Remove the use of global CL command queue
cl::CommandQueue::setDefault(cl::CommandQueue{});
BOOST_ASSERT(cl::CommandQueue::getDefault()() == NULL);
// always load the OpenCL runtime
LoadOpenClRuntime();
#endif
}
ClContextControl::~ClContextControl()
{
#ifdef ARMCOMPUTECL_ENABLED
// load the OpencCL runtime without the tuned parameters to free the memory for them
try
{
UnloadOpenClRuntime();
}
catch (const cl::Error& clError)
{
// this should not happen, it is ignored if it does
// Coverity fix: BOOST_LOG_TRIVIAL (previously used here to report the error) may throw an
// exception of type std::length_error.
// Using stderr instead in this context as there is no point in nesting try-catch blocks here.
std::cerr << "A CL error occurred unloading the runtime tuner parameters: "
<< clError.what() << ". CL error code is: " << clError.err() << std::endl;
}
#endif
}
void ClContextControl::LoadOpenClRuntime()
{
DoLoadOpenClRuntime(true);
}
void ClContextControl::UnloadOpenClRuntime()
{
DoLoadOpenClRuntime(false);
}
void ClContextControl::DoLoadOpenClRuntime(bool useTunedParameters)
{
#ifdef ARMCOMPUTECL_ENABLED
cl::Device device = cl::Device::getDefault();
cl::Context context;
cl::CommandQueue commandQueue;
if (arm_compute::CLScheduler::get().context()() != NULL)
{
// wait for all queued CL requests to finish before reinitialising it
arm_compute::CLScheduler::get().sync();
}
try
{
arm_compute::CLKernelLibrary::get().clear_programs_cache();
// initialise the scheduler with a dummy context to release the LLVM data (which only happens when there are no
// context references); it is initialised again, with a proper context, later.
arm_compute::CLScheduler::get().init(context, commandQueue, device);
arm_compute::CLKernelLibrary::get().init(".", context, device);
{
//
// Here we replace the context with a new one which in
// the memory leak checks shows as an extra allocation but
// because of the scope of the leak check it doesn't count
// the disposal of the original object. On the other hand it
// does count the creation of this context which it flags
// as a memory leak. By adding the following line we prevent
// this to happen.
//
ARMNN_DISABLE_LEAK_CHECKING_IN_SCOPE();
context = cl::Context(device);
}
bool enableProfiling = false;
#if ARMNN_PROFILING_ENABLED
enableProfiling = true;
#endif
if (useTunedParameters &&
m_clTunedParameters && m_clTunedParameters->m_Mode == IClTunedParameters::Mode::UpdateTunedParameters)
{
enableProfiling = true; // Needed for the CLTuner to work.
}
if (enableProfiling)
{
// Create a new queue with profiling enabled
commandQueue = cl::CommandQueue(context, device, CL_QUEUE_PROFILING_ENABLE);
}
else
{
// Use default queue
commandQueue = cl::CommandQueue(context, device);
}
}
catch (const cl::Error& clError)
{
throw ClRuntimeUnavailableException(boost::str(boost::format(
"Could not initialize the CL runtime. Error description: %1%. CL error code: %2%"
) % clError.what() % clError.err()));
}
// Note the first argument (path to cl source code) will be ignored as they should be embedded in the armcompute.
arm_compute::CLKernelLibrary::get().init(".", context, device);
arm_compute::ICLTuner* tuner = nullptr;
if (useTunedParameters && m_clTunedParameters)
{
tuner = &m_clTunedParameters->m_Tuner;
}
arm_compute::CLScheduler::get().init(context, commandQueue, device, tuner);
#endif
}
void ClContextControl::ClearClCache()
{
DoLoadOpenClRuntime(true);
}
armnn::IClTunedParameters* IClTunedParameters::CreateRaw(armnn::IClTunedParameters::Mode mode)
{
return new ClTunedParameters(mode);
}
armnn::IClTunedParametersPtr IClTunedParameters::Create(armnn::IClTunedParameters::Mode mode)
{
return IClTunedParametersPtr(CreateRaw(mode), &IClTunedParameters::Destroy);
}
void IClTunedParameters::Destroy(IClTunedParameters* params)
{
delete params;
}
ClTunedParameters::ClTunedParameters(armnn::IClTunedParameters::Mode mode)
: m_Mode(mode)
#ifdef ARMCOMPUTECL_ENABLED
, m_Tuner(mode == ClTunedParameters::Mode::UpdateTunedParameters)
#endif
{
}
void ClTunedParameters::Load(const char* filename)
{
#ifdef ARMCOMPUTECL_ENABLED
try
{
m_Tuner.load_from_file(filename);
}
catch (const std::exception& e)
{
throw armnn::Exception(std::string("Failed to load tuned parameters file '") + filename + "': " +
e.what());
}
#endif
}
void ClTunedParameters::Save(const char* filename) const
{
#ifdef ARMCOMPUTECL_ENABLED
try
{
m_Tuner.save_to_file(filename);
}
catch (const std::exception& e)
{
throw armnn::Exception(std::string("Failed to save tuned parameters file to '") + filename + "': " +
e.what());
}
#endif
}
} // namespace armnn
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