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/* ************************************************************************
* Copyright 2013 Advanced Micro Devices, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ************************************************************************/
// clfft.opencl.cpp : Provides functions to set up openCL
//
#include "stdafx.h"
#include <stdexcept>
#include <iomanip>
#include <sstream>
#include <cstring>
#include <vector>
#include "clFFT.h"
#include "openCL.misc.h"
void prettyPrintPlatformInfo( const cl_platform_id& pId )
{
size_t platformProfileSize = 0;
OPENCL_V_THROW( ::clGetPlatformInfo( pId, CL_PLATFORM_PROFILE, 0, NULL, &platformProfileSize ),
"Getting CL_PLATFORM_PROFILE Platform Info string size ( ::clGetPlatformInfo() )" );
std::vector< char > szPlatformProfile( platformProfileSize );
OPENCL_V_THROW( ::clGetPlatformInfo( pId, CL_PLATFORM_PROFILE, platformProfileSize, &szPlatformProfile[ 0 ], NULL),
"Getting CL_PLATFORM_PROFILE Platform Info string ( ::clGetPlatformInfo() )" );
size_t platformVersionSize = 0;
OPENCL_V_THROW( ::clGetPlatformInfo( pId, CL_PLATFORM_VERSION, 0, NULL, &platformVersionSize ),
"Getting CL_PLATFORM_VERSION Platform Info string size ( ::clGetPlatformInfo() )" );
std::vector< char > szPlatformVersion( platformVersionSize );
OPENCL_V_THROW( ::clGetPlatformInfo( pId, CL_PLATFORM_VERSION, platformVersionSize, &szPlatformVersion[ 0 ], NULL),
"Getting CL_PLATFORM_VERSION Platform Info string ( ::clGetPlatformInfo() )" );
size_t platformNameSize = 0;
OPENCL_V_THROW( ::clGetPlatformInfo( pId, CL_PLATFORM_NAME, 0, NULL, &platformNameSize ),
"Getting CL_PLATFORM_NAME Platform Info string size ( ::clGetPlatformInfo() )" );
std::vector< char > szPlatformName( platformNameSize );
OPENCL_V_THROW( ::clGetPlatformInfo( pId, CL_PLATFORM_NAME, platformNameSize, &szPlatformName[ 0 ], NULL),
"Getting CL_PLATFORM_NAME Platform Info string ( ::clGetPlatformInfo() )" );
size_t vendorStringSize = 0;
OPENCL_V_THROW( ::clGetPlatformInfo( pId, CL_PLATFORM_VENDOR, 0, NULL, &vendorStringSize ),
"Getting CL_PLATFORM_VENDOR Platform Info string size ( ::clGetPlatformInfo() )" );
std::vector< char > szPlatformVendor( vendorStringSize );
OPENCL_V_THROW( ::clGetPlatformInfo( pId, CL_PLATFORM_VENDOR, vendorStringSize, &szPlatformVendor[ 0 ], NULL),
"Getting CL_PLATFORM_VENDOR Platform Info string ( ::clGetPlatformInfo() )" );
size_t platformExtensionsSize = 0;
OPENCL_V_THROW( ::clGetPlatformInfo( pId, CL_PLATFORM_EXTENSIONS, 0, NULL, &platformExtensionsSize ),
"Getting CL_PLATFORM_EXTENSIONS Platform Info string size ( ::clGetPlatformInfo() )" );
std::vector< char > szPlatformExtensions( platformExtensionsSize );
OPENCL_V_THROW( ::clGetPlatformInfo( pId, CL_PLATFORM_EXTENSIONS, platformExtensionsSize, &szPlatformExtensions[ 0 ], NULL),
"Getting CL_PLATFORM_EXTENSIONS Platform Info string ( ::clGetPlatformInfo() )" );
const int indent = countOf( " CL_PLATFORM_EXTENSIONS: " );
std::cout << std::left << std::setw( indent ) << " CL_PLATFORM_PROFILE: " << &szPlatformProfile[ 0 ] << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_PLATFORM_VERSION: " << &szPlatformVersion[ 0 ] << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_PLATFORM_NAME: " << &szPlatformName[ 0 ] << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_PLATFORM_VENDOR: " << &szPlatformVendor[ 0 ] << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_PLATFORM_EXTENSIONS: " << &szPlatformExtensions[ 0 ] << std::endl;
std::cout << std::right << std::endl;
}
void prettyPrintDeviceInfo( const cl_device_id& dId )
{
size_t deviceNameSize = 0;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_NAME, 0, NULL, &deviceNameSize ),
"Getting CL_DEVICE_NAME Platform Info string size ( ::clGetDeviceInfo() )" );
std::vector< char > szDeviceName( deviceNameSize );
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_NAME, deviceNameSize, &szDeviceName[ 0 ], NULL ),
"Getting CL_DEVICE_NAME Platform Info string ( ::clGetDeviceInfo() )" );
size_t deviceVersionSize = 0;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_VERSION, 0, NULL, &deviceVersionSize ),
"Getting CL_DEVICE_VERSION Platform Info string size ( ::clGetDeviceInfo() )" );
std::vector< char > szDeviceVersion( deviceVersionSize );
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_VERSION, deviceVersionSize, &szDeviceVersion[ 0 ], NULL ),
"Getting CL_DEVICE_VERSION Platform Info string ( ::clGetDeviceInfo() )" );
size_t driverVersionSize = 0;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DRIVER_VERSION, 0, NULL, &driverVersionSize ),
"Getting CL_DRIVER_VERSION Platform Info string size ( ::clGetDeviceInfo() )" );
std::vector< char > szDriverVersion( driverVersionSize );
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DRIVER_VERSION, driverVersionSize, &szDriverVersion[ 0 ], NULL ),
"Getting CL_DRIVER_VERSION Platform Info string ( ::clGetDeviceInfo() )" );
size_t openCLVersionSize = 0;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_OPENCL_C_VERSION, 0, NULL, &openCLVersionSize ),
"Getting CL_DEVICE_OPENCL_C_VERSION Platform Info string size ( ::clGetDeviceInfo() )" );
std::vector< char > szOpenCLVersion( openCLVersionSize );
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_OPENCL_C_VERSION, openCLVersionSize, &szOpenCLVersion[ 0 ], NULL ),
"Getting CL_DEVICE_OPENCL_C_VERSION Platform Info string ( ::clGetDeviceInfo() )" );
cl_device_type devType = CL_DEVICE_TYPE_DEFAULT;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_TYPE, sizeof( cl_device_type ), &devType, NULL ),
"Getting CL_DEVICE_TYPE device info ( ::clGetDeviceInfo() )" );
cl_uint devAddrBits = 0;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_ADDRESS_BITS, sizeof( cl_uint ), &devAddrBits, NULL ),
"Getting CL_DEVICE_ADDRESS_BITS device info ( ::clGetDeviceInfo() )" );
cl_uint maxClockFreq = 0;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_MAX_CLOCK_FREQUENCY, sizeof( cl_uint ), &maxClockFreq, NULL ),
"Getting CL_DEVICE_MAX_CLOCK_FREQUENCY device info ( ::clGetDeviceInfo() )" );
cl_bool devAvailable = CL_FALSE;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_AVAILABLE, sizeof( cl_bool ), &devAvailable, NULL ),
"Getting CL_DEVICE_AVAILABLE device info ( ::clGetDeviceInfo() )" );
cl_bool devCompAvailable = CL_FALSE;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_COMPILER_AVAILABLE, sizeof( cl_bool ), &devCompAvailable, NULL ),
"Getting CL_DEVICE_COMPILER_AVAILABLE device info ( ::clGetDeviceInfo() )" );
size_t devMaxWorkGroup = 0;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_MAX_WORK_GROUP_SIZE, sizeof( size_t ), &devMaxWorkGroup, NULL ),
"Getting CL_DEVICE_MAX_WORK_GROUP_SIZE device info ( ::clGetDeviceInfo() )" );
cl_uint devMaxWorkItemDim = CL_FALSE;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS, sizeof( cl_uint ), &devMaxWorkItemDim, NULL ),
"Getting CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS device info ( ::clGetDeviceInfo() )" );
std::vector< size_t > devMaxWorkItemSizes( devMaxWorkItemDim );
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_MAX_WORK_ITEM_SIZES, sizeof( size_t )*devMaxWorkItemSizes.size( ), &devMaxWorkItemSizes[0], NULL),
"Getting CL_DEVICE_MAX_WORK_ITEM_SIZES device info ( ::clGetDeviceInfo() )" );
cl_bool deviceHostUnified = 0;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_HOST_UNIFIED_MEMORY, sizeof( cl_bool ), &deviceHostUnified, NULL ),
"Getting CL_DEVICE_HOST_UNIFIED_MEMORY Platform Info string ( ::clGetDeviceInfo() )" );
cl_ulong devMaxConstantBuffer = 0;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE, sizeof( cl_ulong ), &devMaxConstantBuffer, NULL ),
"Getting CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE device info ( ::clGetDeviceInfo() )" );
cl_ulong devLocalMemSize = 0;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_LOCAL_MEM_SIZE, sizeof( cl_ulong ), &devLocalMemSize, NULL ),
"Getting CL_DEVICE_LOCAL_MEM_SIZE device info ( ::clGetDeviceInfo() )" );
cl_ulong deviceGlobalMemSize = 0;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_GLOBAL_MEM_SIZE, sizeof( cl_ulong ), &deviceGlobalMemSize, NULL ),
"Getting CL_DEVICE_GLOBAL_MEM_SIZE device info ( ::clGetDeviceInfo() )" );
cl_ulong deviceMaxMemAllocSize = 0;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_MAX_MEM_ALLOC_SIZE, sizeof( cl_ulong ), &deviceMaxMemAllocSize, NULL ),
"Getting CL_DEVICE_MAX_MEM_ALLOC_SIZE device info ( ::clGetDeviceInfo() )" );
size_t deviceExtSize = 0;
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_EXTENSIONS, 0, NULL, &deviceExtSize ),
"Getting CL_DEVICE_EXTENSIONS Platform Info string size ( ::clGetDeviceInfo() )" );
std::vector< char > szDeviceExt( deviceExtSize );
OPENCL_V_THROW( ::clGetDeviceInfo( dId, CL_DEVICE_EXTENSIONS, deviceExtSize, &szDeviceExt[ 0 ], NULL ),
"Getting CL_DEVICE_EXTENSIONS Platform Info string ( ::clGetDeviceInfo() )" );
const int indent = countOf( " CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS: " );
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_NAME: " << &szDeviceName[ 0 ] << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_VERSION: " << &szDeviceVersion[ 0 ] << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DRIVER_VERSION: " << &szDriverVersion[ 0 ] << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_TYPE: "
<< (CL_DEVICE_TYPE_DEFAULT & devType ? "default" : "")
<< (CL_DEVICE_TYPE_CPU & devType ? "CPU" : "")
<< (CL_DEVICE_TYPE_GPU & devType ? "GPU" : "")
<< (CL_DEVICE_TYPE_ACCELERATOR & devType ? "Accelerator" : "")
<< std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_MAX_CLOCK_FREQUENCY: " << maxClockFreq << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_ADDRESS_BITS: " << devAddrBits << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_AVAILABLE: " << ( devAvailable ? "TRUE": "FALSE") << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_COMPILER_AVAILABLE: " << ( devCompAvailable ? "TRUE": "FALSE") << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_OPENCL_C_VERSION: " << &szOpenCLVersion[ 0 ] << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_MAX_WORK_GROUP_SIZE: " << devMaxWorkGroup << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS: " << devMaxWorkItemDim << std::endl;
for( cl_uint wis = 0; wis < devMaxWorkItemSizes.size( ); ++wis )
{
std::stringstream dimString;
dimString << "Dimension[ " << wis << " ] ";
std::cout << std::right << std::setw( indent ) << dimString.str( ) << devMaxWorkItemSizes[wis] << std::endl;
}
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_HOST_UNIFIED_MEMORY: " << ( deviceHostUnified ? "TRUE": "FALSE") << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE: " << devMaxConstantBuffer;
std::cout << " ( " << devMaxConstantBuffer / 1024 << " KB )" << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_LOCAL_MEM_SIZE: " << devLocalMemSize;
std::cout << " ( " << devLocalMemSize / 1024 << " KB )" << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_GLOBAL_MEM_SIZE: " << deviceGlobalMemSize;
std::cout << " ( " << deviceGlobalMemSize / 1048576 << " MB )" << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_MAX_MEM_ALLOC_SIZE: " << deviceMaxMemAllocSize;
std::cout << " ( " << deviceMaxMemAllocSize / 1048576 << " MB )" << std::endl;
std::cout << std::left << std::setw( indent ) << " CL_DEVICE_EXTENSIONS: " << &szDeviceExt[ 0 ] << std::endl;
std::cout << std::right << std::endl;
}
void prettyPrintCLPlatforms(std::vector< cl_platform_id >& platforms,
std::vector< std::vector< cl_device_id > >& devices)
{
for (unsigned int i = 0; i < platforms.size(); ++i)
{
std::cout << "OpenCL platform [ " << i << " ]:" << std::endl;
prettyPrintPlatformInfo(platforms[i]);
for (unsigned int n = 0; n < devices[i].size(); ++n)
{
std::cout << "OpenCL platform [ " << i << " ], device [ " << n << " ]:" << std::endl;
prettyPrintDeviceInfo((devices[i])[n]);
}
}
}
// Verify a failed condition; return true on fail
inline cl_bool OPENCL_V_FAIL( cl_int res )
{
if( res == CL_SUCCESS )
return CL_FALSE;
else
return CL_TRUE;
}
std::string prettyPrintclFFTStatus( const cl_int& status )
{
switch( status )
{
case CLFFT_INVALID_GLOBAL_WORK_SIZE:
return "CLFFT_INVALID_GLOBAL_WORK_SIZE";
case CLFFT_INVALID_MIP_LEVEL:
return "CLFFT_INVALID_MIP_LEVEL";
case CLFFT_INVALID_BUFFER_SIZE:
return "CLFFT_INVALID_BUFFER_SIZE";
case CLFFT_INVALID_GL_OBJECT:
return "CLFFT_INVALID_GL_OBJECT";
case CLFFT_INVALID_OPERATION:
return "CLFFT_INVALID_OPERATION";
case CLFFT_INVALID_EVENT:
return "CLFFT_INVALID_EVENT";
case CLFFT_INVALID_EVENT_WAIT_LIST:
return "CLFFT_INVALID_EVENT_WAIT_LIST";
case CLFFT_INVALID_GLOBAL_OFFSET:
return "CLFFT_INVALID_GLOBAL_OFFSET";
case CLFFT_INVALID_WORK_ITEM_SIZE:
return "CLFFT_INVALID_WORK_ITEM_SIZE";
case CLFFT_INVALID_WORK_GROUP_SIZE:
return "CLFFT_INVALID_WORK_GROUP_SIZE";
case CLFFT_INVALID_WORK_DIMENSION:
return "CLFFT_INVALID_WORK_DIMENSION";
case CLFFT_INVALID_KERNEL_ARGS:
return "CLFFT_INVALID_KERNEL_ARGS";
case CLFFT_INVALID_ARG_SIZE:
return "CLFFT_INVALID_ARG_SIZE";
case CLFFT_INVALID_ARG_VALUE:
return "CLFFT_INVALID_ARG_VALUE";
case CLFFT_INVALID_ARG_INDEX:
return "CLFFT_INVALID_ARG_INDEX";
case CLFFT_INVALID_KERNEL:
return "CLFFT_INVALID_KERNEL";
case CLFFT_INVALID_KERNEL_DEFINITION:
return "CLFFT_INVALID_KERNEL_DEFINITION";
case CLFFT_INVALID_KERNEL_NAME:
return "CLFFT_INVALID_KERNEL_NAME";
case CLFFT_INVALID_PROGRAM_EXECUTABLE:
return "CLFFT_INVALID_PROGRAM_EXECUTABLE";
case CLFFT_INVALID_PROGRAM:
return "CLFFT_INVALID_PROGRAM";
case CLFFT_INVALID_BUILD_OPTIONS:
return "CLFFT_INVALID_BUILD_OPTIONS";
case CLFFT_INVALID_BINARY:
return "CLFFT_INVALID_BINARY";
case CLFFT_INVALID_SAMPLER:
return "CLFFT_INVALID_SAMPLER";
case CLFFT_INVALID_IMAGE_SIZE:
return "CLFFT_INVALID_IMAGE_SIZE";
case CLFFT_INVALID_IMAGE_FORMAT_DESCRIPTOR:
return "CLFFT_INVALID_IMAGE_FORMAT_DESCRIPTOR";
case CLFFT_INVALID_MEM_OBJECT:
return "CLFFT_INVALID_MEM_OBJECT";
case CLFFT_INVALID_HOST_PTR:
return "CLFFT_INVALID_HOST_PTR";
case CLFFT_INVALID_COMMAND_QUEUE:
return "CLFFT_INVALID_COMMAND_QUEUE";
case CLFFT_INVALID_QUEUE_PROPERTIES:
return "CLFFT_INVALID_QUEUE_PROPERTIES";
case CLFFT_INVALID_CONTEXT:
return "CLFFT_INVALID_CONTEXT";
case CLFFT_INVALID_DEVICE:
return "CLFFT_INVALID_DEVICE";
case CLFFT_INVALID_PLATFORM:
return "CLFFT_INVALID_PLATFORM";
case CLFFT_INVALID_DEVICE_TYPE:
return "CLFFT_INVALID_DEVICE_TYPE";
case CLFFT_INVALID_VALUE:
return "CLFFT_INVALID_VALUE";
case CLFFT_MAP_FAILURE:
return "CLFFT_MAP_FAILURE";
case CLFFT_BUILD_PROGRAM_FAILURE:
return "CLFFT_BUILD_PROGRAM_FAILURE";
case CLFFT_IMAGE_FORMAT_NOT_SUPPORTED:
return "CLFFT_IMAGE_FORMAT_NOT_SUPPORTED";
case CLFFT_IMAGE_FORMAT_MISMATCH:
return "CLFFT_IMAGE_FORMAT_MISMATCH";
case CLFFT_MEM_COPY_OVERLAP:
return "CLFFT_MEM_COPY_OVERLAP";
case CLFFT_PROFILING_INFO_NOT_AVAILABLE:
return "CLFFT_PROFILING_INFO_NOT_AVAILABLE";
case CLFFT_OUT_OF_HOST_MEMORY:
return "CLFFT_OUT_OF_HOST_MEMORY";
case CLFFT_OUT_OF_RESOURCES:
return "CLFFT_OUT_OF_RESOURCES";
case CLFFT_MEM_OBJECT_ALLOCATION_FAILURE:
return "CLFFT_MEM_OBJECT_ALLOCATION_FAILURE";
case CLFFT_COMPILER_NOT_AVAILABLE:
return "CLFFT_COMPILER_NOT_AVAILABLE";
case CLFFT_DEVICE_NOT_AVAILABLE:
return "CLFFT_DEVICE_NOT_AVAILABLE";
case CLFFT_DEVICE_NOT_FOUND:
return "CLFFT_DEVICE_NOT_FOUND";
case CLFFT_SUCCESS:
return "CLFFT_SUCCESS";
case CLFFT_NOTIMPLEMENTED:
return "CLFFT_NOTIMPLEMENTED";
case CLFFT_TRANSPOSED_NOTIMPLEMENTED:
return "CLFFT_TRANSPOSED_NOTIMPLEMENTED";
case CLFFT_FILE_NOT_FOUND:
return "CLFFT_FILE_NOT_FOUND";
case CLFFT_FILE_CREATE_FAILURE:
return "CLFFT_FILE_CREATE_FAILURE";
case CLFFT_VERSION_MISMATCH:
return "CLFFT_VERSION_MISMATCH";
case CLFFT_INVALID_PLAN:
return "CLFFT_INVALID_PLAN";
default:
return "Error code not defined";
break;
}
}
int discoverCLPlatforms( cl_device_type deviceType,
std::vector< cl_platform_id >& platforms,
std::vector< std::vector< cl_device_id > >& devices )
{
cl_int status = 0;
/*
* Find all OpenCL platforms this system has to offer.
*/
cl_uint numPlatforms = 0;
cl_platform_id platform = NULL;
OPENCL_V_THROW(::clGetPlatformIDs(0, NULL, &numPlatforms),
"Getting number of platforms( ::clGetPlatformsIDs() )");
if (numPlatforms > 0)
{
platforms.resize( numPlatforms );
devices.resize( numPlatforms );
OPENCL_V_THROW(::clGetPlatformIDs(numPlatforms, &platforms[0], NULL),
"Getting Platform Id's ( ::clGetPlatformsIDs() )");
if (NULL == platforms[0])
{
throw std::runtime_error("No appropriate OpenCL platform could be found");
}
/*
* Now, for each platform get all available devices matching deviceType.
*/
for (unsigned int i = 0; i < numPlatforms; ++i)
{
// Get the device list for deviceType.
//
cl_uint numDevices = 0;
OPENCL_V_WARN(::clGetDeviceIDs(platforms[i], deviceType, 0, NULL, &numDevices),
"Getting OpenCL devices ( ::clGetDeviceIDs() )");
if (0 == numDevices)
{
// OPENCL_V_WARN(CLFFT_DEVICE_NOT_AVAILABLE, "No devices available");
continue;
}
devices[i].resize(numDevices);
OPENCL_V_THROW(::clGetDeviceIDs(platforms[i], deviceType, numDevices, &(devices[i])[0], NULL),
"Getting OpenCL deviceIDs ( ::clGetDeviceIDs() )");
}
}
return 0;
}
std::vector< cl_device_id > initializeCL( cl_device_type deviceType,
cl_int deviceId,
cl_int platformId,
cl_context& context,
bool printclInfo )
{
cl_int status = 0;
cl_platform_id platform = NULL;
std::vector< cl_device_id > devices(1);
devices[0] = NULL;
// Have a look at all the available platforms on this system
std::vector< cl_platform_id > platformInfos;
std::vector< std::vector< cl_device_id > > deviceInfos;
discoverCLPlatforms( deviceType, platformInfos, deviceInfos );
for (unsigned int i = 0; i < platformInfos.size(); ++i)
{
if(i == platformId)
{
for (unsigned int n = 0; n < deviceInfos[i].size(); ++n)
{
if (n == deviceId)
{
platform = platformInfos[i];
devices[0] = deviceInfos[i][n];
if(printclInfo)
{
prettyPrintPlatformInfo(platform);
prettyPrintDeviceInfo(devices[0]);
}
break;
}
}
break;
}
}
// Do some error checking if we really selected a valid platform and a valid device
if (NULL == devices[0])
{
OPENCL_V_THROW(CLFFT_DEVICE_NOT_AVAILABLE, "No devices available");
}
if (NULL == platform)
{
throw std::runtime_error("No appropriate OpenCL platform could be found");
}
// Create an OpenCL context
cl_context_properties cps[3] = { CL_CONTEXT_PLATFORM, (cl_context_properties) platform, 0 };
context = clCreateContext(cps,
(cl_uint)devices.size(),
&devices[0],
NULL,
NULL,
&status);
OPENCL_V_THROW(status, "Creating Context ( ::clCreateContextFromType() )");
return devices;
}
int cleanupCL( cl_context* context, cl_command_queue* commandQueue,
const cl_uint numBuffersIn, cl_mem inputBuffer[], const cl_uint numBuffersOut, cl_mem outputBuffer[], cl_event* outEvent )
{
if(outEvent != NULL)
{
if( *outEvent != NULL )
OPENCL_V_THROW( clReleaseEvent( *outEvent ), "Error: In clReleaseEvent\n" );
}
releaseOpenCLMemBuffer( numBuffersIn, inputBuffer);
releaseOpenCLMemBuffer( numBuffersOut, outputBuffer);
if( *commandQueue != NULL )
OPENCL_V_THROW( clReleaseCommandQueue( *commandQueue ), "Error: In clReleaseCommandQueue\n" );
if( *context != NULL )
OPENCL_V_THROW( clReleaseContext( *context ), "Error: In clReleaseContext\n" );
return 0;
}
int createOpenCLMemoryBuffer( cl_context& context, const size_t bufferSizeBytes, const cl_uint numBuffers, cl_mem buffer[], cl_mem_flags accessibility) {
cl_int status = 0;
for( cl_uint i = 0; i < numBuffers; ++i )
{
buffer[ i ] = ::clCreateBuffer( context, accessibility, bufferSizeBytes, NULL, &status);
OPENCL_V_THROW( status, "Creating Buffer ( ::clCreateBuffer() )" );
}
return 0;
}
int releaseOpenCLMemBuffer( const cl_uint numBuffers, cl_mem buffer[])
{
for( cl_uint i = 0; i < numBuffers; ++i )
{
if( buffer[ i ] != NULL )
OPENCL_V_THROW( clReleaseMemObject( buffer[ i ] ), "Error: In clReleaseMemObject\n" );
}
return 0;
}
void createOpenCLCommandQueue( cl_context& context,
cl_uint commandQueueFlags,
cl_command_queue& commandQueue,
std::vector< cl_device_id > devices,
const size_t bufferSizeBytesIn,
const cl_uint numBuffersIn,
cl_mem clMemBufferIn[],
const size_t bufferSizeBytesOut,
const cl_uint numBuffersOut,
cl_mem clMemBufferOut[] )
{
cl_int status = 0;
commandQueue = ::clCreateCommandQueue( context, devices[0], commandQueueFlags, &status );
OPENCL_V_THROW( status, "Creating Command Queue ( ::clCreateCommandQueue() )" );
createOpenCLMemoryBuffer( context, bufferSizeBytesIn, numBuffersIn, clMemBufferIn, CL_MEM_READ_WRITE);
createOpenCLMemoryBuffer( context, bufferSizeBytesOut, numBuffersOut, clMemBufferOut, CL_MEM_READ_WRITE);
}
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