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caldgemm_opencl.cpp
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caldgemm_opencl.cpp
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/*
* CPU side of CALDGEMM implementation.
*
* Copyright 2015:
* - David Rohr (drohr@jwdt.org)
* - Matthias Bach (bach@compeng.uni-frankfurt.de)
* - Matthias Kretz (kretz@compeng.uni-frankfurt.de)
*
* This file is part of CALDGEMM.
*
* CALDGEMM is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* CALDGEMM is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with CALDGEMM. If not, see <http://www.gnu.org/licenses/>.
*/
#include "caldgemm_opencl.h"
#include <CL/cl_ext.h>
#include <algorithm>
#ifndef _WIN32
#include <syscall.h>
#include <unistd.h>
#include <sys/mman.h>
#ifndef MAP_HUGETLB
#define MAP_HUGETLB 0x40000 /* arch specific */
#endif
#ifndef MPOL_DEFAULT
#define MPOL_DEFAULT 0
#endif
#ifndef MPOL_PREFERRED
#define MPOL_PREFERRED 1
#endif
#ifndef MPOL_BIND
#define MPOL_BIND 2
#endif
#ifndef MPOL_INTERLEAVE
#define MPOL_INTERLEAVE 3
#endif
#endif
#define OCL_KERNEL_PRE \
"#ifdef cl_amd_fp64\n" \
"#pragma OPENCL EXTENSION cl_amd_fp64 : enable\n" \
"#else\n" \
"#pragma OPENCL EXTENSION cl_khr_fp64 : enable\n" \
"#endif\n" \
"//const sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE | CLK_ADDRESS_NONE | CLK_FILTER_NEAREST;\n" \
"\n"
#ifdef CALDGEMM_OPENCL_EMULATE_STRIDED
inline cl_int clEnqueueReadBufferRectUse (cl_command_queue command_queue, cl_mem buffer, cl_bool blocking_read, const size_t buffer_origin[3], const size_t host_origin[3], const size_t region[3], size_t buffer_row_pitch, size_t buffer_slice_pitch,
size_t host_row_pitch, size_t host_slice_pitch, void *ptr, cl_uint num_events_in_wait_list, const cl_event *event_wait_list, cl_event *event)
{
for (unsigned int i = 0;i < region[1];i++)
{
cl_int retVal = clEnqueueReadBuffer(command_queue, buffer, blocking_read, i * region[0], region[0], (char*) ptr + i * host_row_pitch, i == 0 ? num_events_in_wait_list : 0, i == 0 ? event_wait_list : NULL, i == region[1] - 1 ? event : NULL);
if (retVal != CL_SUCCESS) return(retVal);
}
return(CL_SUCCESS);
}
inline cl_int clEnqueueWriteBufferRectUse (cl_command_queue command_queue, cl_mem buffer, cl_bool blocking_read, const size_t buffer_origin[3], const size_t host_origin[3], const size_t region[3], size_t buffer_row_pitch, size_t buffer_slice_pitch,
size_t host_row_pitch, size_t host_slice_pitch, const void *ptr, cl_uint num_events_in_wait_list, const cl_event *event_wait_list, cl_event *event)
{
for (unsigned int i = 0;i < region[1];i++)
{
cl_int retVal = clEnqueueWriteBuffer(command_queue, buffer, blocking_read, i * region[0], region[0], (const char*) ptr + i * host_row_pitch, i == 0 ? num_events_in_wait_list : 0, i == 0 ? event_wait_list : NULL, i == region[1] - 1 ? event : NULL);
if (retVal != CL_SUCCESS) return(retVal);
}
return(CL_SUCCESS);
}
#elif defined(CALDGEMM_OPENCL_USE_ORIGINAL_POINTERS)
inline cl_int clEnqueueReadBufferRectUse (cl_command_queue command_queue, cl_mem buffer, cl_bool blocking_read, const size_t buffer_origin[3], const size_t host_origin[3], const size_t region[3], size_t buffer_row_pitch, size_t buffer_slice_pitch,
size_t host_row_pitch, size_t host_slice_pitch, void *ptr, cl_uint num_events_in_wait_list, const cl_event *event_wait_list, cl_event *event)
{
void* orig_ptr = NULL;
size_t offset = 0;
if (caldgemm_opencl::GetMemoryInfo(NULL, &orig_ptr, &offset, ptr)) return(CL_INVALID_MIP_LEVEL);
size_t offset_origin[3] = {offset % host_row_pitch, offset / host_row_pitch, 0};
return clEnqueueReadBufferRect(command_queue, buffer, blocking_read, buffer_origin, offset_origin, region, buffer_row_pitch, buffer_slice_pitch, host_row_pitch, host_slice_pitch, orig_ptr, num_events_in_wait_list, event_wait_list, event);
}
inline cl_int clEnqueueWriteBufferRectUse (cl_command_queue command_queue, cl_mem buffer, cl_bool blocking_read, const size_t buffer_origin[3], const size_t host_origin[3], const size_t region[3], size_t buffer_row_pitch, size_t buffer_slice_pitch,
size_t host_row_pitch, size_t host_slice_pitch, const void *ptr, cl_uint num_events_in_wait_list, const cl_event *event_wait_list, cl_event *event)
{
void* orig_ptr = NULL;
size_t offset = 0;
if (caldgemm_opencl::GetMemoryInfo(NULL, &orig_ptr, &offset, ptr)) return(CL_INVALID_MIP_LEVEL);
size_t offset_origin[3] = {offset % host_row_pitch, offset / host_row_pitch, 0};
return clEnqueueWriteBufferRect(command_queue, buffer, blocking_read, buffer_origin, offset_origin, region, buffer_row_pitch, buffer_slice_pitch, host_row_pitch, host_slice_pitch, orig_ptr, num_events_in_wait_list, event_wait_list, event);
}
#else
#define clEnqueueWriteBufferRectUse clEnqueueWriteBufferRect
#define clEnqueueReadBufferRectUse clEnqueueReadBufferRect
#endif
#define OCLKernelName OCLKernel
#include "caldgemm.cl"
#undef OCLKernelName
#define OCLKernelName OCLKernelALPHA1
#define CALDGEMM_ALPHA1
#include "caldgemm.cl"
#undef OCLKernelName
#define OCLKernelName OCLKernelLinpack
#define CALDGEMM_LINPACK_KERNEL
#include "caldgemm.cl"
#undef CALDGEMM_LINPACK_KERNEL
#undef CALDGEMM_ALPHA1
#undef OCLKernelName
#ifndef _WIN32
#include <dlfcn.h>
#include <sys/mman.h>
#endif
const char* caldgemm_opencl::OCLConvertKernel =
OCL_KERNEL_PRE
"__kernel void oclconkernel(__global const uint4* __restrict const iBuffer, __global uint4* const oBuffer, int width, int height, int transpose)\n"
"{\n"
" int i, j;\n"
" for (i = get_global_id(1);i < height / 2;i+=get_global_size(1))\n"
" {\n"
" for (j = get_global_id(0);j < width / 2;j+=get_global_size(0))\n"
" {\n"
" uint4 tmp, tmp2;\n"
" tmp = iBuffer[(2 * i) * (width / 2) + j];\n"
" tmp2 = iBuffer[(2 * i + 1) * (width / 2) + j];\n"
" uint4 val, val2;\n"
" if (transpose)\n"
" {\n"
" uint4 val, val2;\n"
" val.x = tmp.x;val.y = tmp.y;\n"
" val.z = tmp2.x;val.w = tmp2.y;\n"
" val2.x = tmp.z;val2.y = tmp.w;\n"
" val2.z = tmp2.z;val2.w = tmp2.w;\n"
" oBuffer[(2 * j) * (height / 2) + i] = val;\n"
" oBuffer[(2 * j + 1) * (height / 2) + i] = val2;\n"
" }\n"
" else\n"
" {\n"
" oBuffer[(2 * i) * (width / 2) + j] = tmp;\n"
" oBuffer[(2 * i + 1) * (width / 2) + j] = tmp2;\n"
" }\n"
" }\n"
" }\n"
"}\n"
;
const char* caldgemm_opencl::OCLConvertKernelTex =
OCL_KERNEL_PRE
"__kernel void oclconkernel(__global const uint4* iBuffer, __write_only image2d_t oBuffer, int width, int height, int transpose)\n"
"{\n"
" int i, j;\n"
" for (i = get_global_id(1);i < height / 2;i+=get_global_size(1))\n"
" {\n"
" for (j = get_global_id(0);j < width / 2;j+=get_global_size(0))\n"
" {\n"
" uint4 tmp, tmp2;\n"
" tmp = iBuffer[(2 * i) * (width / 2) + j];\n"
" tmp2 = iBuffer[(2 * i + 1) * (width / 2) + j];\n"
" int2 coord, coord2;\n"
" uint4 val, val2;\n"
" if (transpose)\n"
" {\n"
" val.x = tmp.x;val.y = tmp.y;\n"
" val.z = tmp2.x;val.w = tmp2.y;\n"
" val2.x = tmp.z;val2.y = tmp.w;\n"
" val2.z = tmp2.z;val2.w = tmp2.w;\n"
" coord.x = i;\n"
" coord.y = 2 * j;\n"
" coord2.x = i;\n"
" coord2.y = 2 * j + 1;\n"
" }\n"
" else\n"
" {\n"
" coord.x = j;\n"
" coord.y = 2 * i;\n"
" coord2.x = j;\n"
" coord2.y = 2 * i + 1;\n"
" val = tmp;\n"
" val2 = tmp2;\n"
" }\n"
" write_imageui(oBuffer, coord, val);\n"
" write_imageui(oBuffer, coord2, val2);\n"
" }\n"
" }\n"
"}\n"
;
static const char* opencl_error_string(int errorcode)
{
switch (errorcode)
{
case CL_SUCCESS: return "Success!";
case CL_DEVICE_NOT_FOUND: return "Device not found.";
case CL_DEVICE_NOT_AVAILABLE: return "Device not available";
case CL_COMPILER_NOT_AVAILABLE: return "Compiler not available";
case CL_MEM_OBJECT_ALLOCATION_FAILURE: return "Memory object allocation failure";
case CL_OUT_OF_RESOURCES: return "Out of resources";
case CL_OUT_OF_HOST_MEMORY: return "Out of host memory";
case CL_PROFILING_INFO_NOT_AVAILABLE: return "Profiling information not available";
case CL_MEM_COPY_OVERLAP: return "Memory copy overlap";
case CL_IMAGE_FORMAT_MISMATCH: return "Image format mismatch";
case CL_IMAGE_FORMAT_NOT_SUPPORTED: return "Image format not supported";
case CL_BUILD_PROGRAM_FAILURE: return "Program build failure";
case CL_MAP_FAILURE: return "Map failure";
case CL_INVALID_VALUE: return "Invalid value";
case CL_INVALID_DEVICE_TYPE: return "Invalid device type";
case CL_INVALID_PLATFORM: return "Invalid platform";
case CL_INVALID_DEVICE: return "Invalid device";
case CL_INVALID_CONTEXT: return "Invalid context";
case CL_INVALID_QUEUE_PROPERTIES: return "Invalid queue properties";
case CL_INVALID_COMMAND_QUEUE: return "Invalid command queue";
case CL_INVALID_HOST_PTR: return "Invalid host pointer";
case CL_INVALID_MEM_OBJECT: return "Invalid memory object";
case CL_INVALID_IMAGE_FORMAT_DESCRIPTOR: return "Invalid image format descriptor";
case CL_INVALID_IMAGE_SIZE: return "Invalid image size";
case CL_INVALID_SAMPLER: return "Invalid sampler";
case CL_INVALID_BINARY: return "Invalid binary";
case CL_INVALID_BUILD_OPTIONS: return "Invalid build options";
case CL_INVALID_PROGRAM: return "Invalid program";
case CL_INVALID_PROGRAM_EXECUTABLE: return "Invalid program executable";
case CL_INVALID_KERNEL_NAME: return "Invalid kernel name";
case CL_INVALID_KERNEL_DEFINITION: return "Invalid kernel definition";
case CL_INVALID_KERNEL: return "Invalid kernel";
case CL_INVALID_ARG_INDEX: return "Invalid argument index";
case CL_INVALID_ARG_VALUE: return "Invalid argument value";
case CL_INVALID_ARG_SIZE: return "Invalid argument size";
case CL_INVALID_KERNEL_ARGS: return "Invalid kernel arguments";
case CL_INVALID_WORK_DIMENSION: return "Invalid work dimension";
case CL_INVALID_WORK_GROUP_SIZE: return "Invalid work group size";
case CL_INVALID_WORK_ITEM_SIZE: return "Invalid work item size";
case CL_INVALID_GLOBAL_OFFSET: return "Invalid global offset";
case CL_INVALID_EVENT_WAIT_LIST: return "Invalid event wait list";
case CL_INVALID_EVENT: return "Invalid event";
case CL_INVALID_OPERATION: return "Invalid operation";
case CL_INVALID_GL_OBJECT: return "Invalid OpenGL object";
case CL_INVALID_BUFFER_SIZE: return "Invalid buffer size";
case CL_INVALID_MIP_LEVEL: return "Invalid mip-map level";
default: return "Unknown Errorcode";
}
}
#define ERRRET(...) {fprintf(STD_OUT, __VA_ARGS__);fprintf(STD_OUT, "\n");return(1);}
#define CHKRET(result, ...) \
{ \
const cl_int tmp_ocl_error = result; \
if (tmp_ocl_error != CL_SUCCESS) \
{ \
fprintf(STD_OUT, __VA_ARGS__); \
fprintf(STD_OUT, ":\n"); \
fprintf(STD_OUT, "OpenCL Error %d: (%s: %d) %s\n", tmp_ocl_error, __FILE__, __LINE__, opencl_error_string(tmp_ocl_error)); \
return(1); \
} \
}
caldgemm_opencl::caldgemm_opencl() : caldgemm()
{
}
caldgemm_opencl::~caldgemm_opencl()
{
}
caldgemm_opencl::caldgemm_config_backend_opencl::caldgemm_config_backend_opencl()
{
size = sizeof(*this);
kernelLib = NULL;
allowCPUDevice = false;
}
caldgemm::caldgemm_config_backend* caldgemm_opencl::create_caldgemm_config_backend()
{
return(new caldgemm_config_backend_opencl);
}
void caldgemm_opencl::caldgemm_config_backend_opencl::printConfig(caldgemm_config_backend* oldConfigA)
{
caldgemm_config_backend_opencl* oldConfig = (caldgemm_config_backend_opencl*) oldConfigA;
caldgemm_config_backend_opencl* const newConfig = this;
caldgemm_config_backend_opencl* const myConfig = this;
PRINT_CONFIG_STRING(kernelLib);
PRINT_CONFIG_INT(allowCPUDevice);
}
caldgemm_opencl::caldgemm_config_backend_opencl::~caldgemm_config_backend_opencl() {}
int caldgemm_opencl::caldgemm_config_backend_opencl::ParseBackendOptions(unsigned int argc, char** argv)
{
caldgemm::caldgemm_config* Config = NULL; //Should never be accessed if caldgemm_parse_parameterts.h is correct
#define CALDGEMM_PARAMETERS_BACKEND
#include "caldgemm_parse_parameters.h"
#undef CALDGEMM_PARAMETERS_BACKEND
return(0);
}
int caldgemm_opencl::WaitForEventAndRelease(cl_event* pEvent, int lock)
{
cl_int ocl_error;
if (lock == -1) lock = (Config->ThreadSaveDriver == -1);
if (Config->Debug) fprintf(STD_OUT, "\t\t\tOpenCL WaitForEventAndRelease: 0x%p\n", pEvent);
if (lock)
{
cl_int status;
do
{
if (Config->ThreadSaveDriver == -1) pthread_mutex_lock(&globalDriverLock);
if (clGetEventInfo(*pEvent, CL_EVENT_COMMAND_EXECUTION_STATUS, sizeof(status), &status, NULL) != CL_SUCCESS)
{
fprintf(STD_OUT, "Error querying event info\n");
return(1);
}
if (Config->ThreadSaveDriver == -1) pthread_mutex_unlock(&globalDriverLock);
} while (status != CL_COMPLETE);
}
else
{
if ((ocl_error = clWaitForEvents(1, pEvent)) != CL_SUCCESS)
{
fprintf(STD_OUT, "Error while waiting for event (%d: %s)\n", ocl_error, opencl_error_string(ocl_error));
return(1);
}
}
if (Config->ThreadSaveDriver == -1) pthread_mutex_lock(&globalDriverLock);
if ((ocl_error = clReleaseEvent(*pEvent)) != CL_SUCCESS)
{
fprintf(STD_OUT, "Error releasing event (%d: %s)\n", ocl_error, opencl_error_string(ocl_error));
return(1);
}
if (Config->ThreadSaveDriver == -1) pthread_mutex_unlock(&globalDriverLock);
return(0);
}
int caldgemm_opencl::WaitForEvent(int a, int b, int mustlock)
{
if (Config->SimpleGPUQueuing) return(0);
if (Config->Debug) fprintf(STD_OUT, "\tWaiting for event from device %d obuffer %d...\n", b, a);
return(WaitForEventAndRelease(&ocl_events[b][a], mustlock || Config->ThreadSaveDriver == -1));
}
int caldgemm_opencl::Initialize(bool nocalinit)
{
int deviceNum = Config->DeviceNum;
if (!Config->Quiet) fprintf(STD_OUT, "Initializing CALDGEMM (OpenCL Runtime)\n");
if (Config->Debug) fprintf(STD_OUT, "OPENCL Initialice\n");
cl_int ocl_error;
cl_uint num_devices;
CHKRET(clGetDeviceIDs(ocl_platform, CL_DEVICE_TYPE_ALL, 0, NULL, &num_devices), "Error getting device IDs");
nDevices = num_devices;
if (nDevices == 0) ERRRET("No OpenCL device for this platform found\n");
if (Config->Debug) fprintf(STD_OUT, "%d OpenCL devices found for this platform\n", nDevices);
cl_device_id* devices = new cl_device_id[nDevices];
if (devices == NULL) ERRRET("Memory allocation error\n");
CHKRET(clGetDeviceIDs(ocl_platform, CL_DEVICE_TYPE_ALL, nDevices, devices, NULL), "Error getting OpenCL devices");
int gooddevices = 0;
int cpu_found = 0;
cl_device_id cpu_device;
for (int i = 0;i < nDevices;i++)
{
char device_vendor[64], device_name[64];
cl_device_type device_type;
cl_uint nbits;
CHKRET(clGetDeviceInfo(devices[i], CL_DEVICE_NAME, 64, device_name, NULL), "Error getting device info");
CHKRET(clGetDeviceInfo(devices[i], CL_DEVICE_VENDOR, 64, device_vendor, NULL), "Error getting device info");
CHKRET(clGetDeviceInfo(devices[i], CL_DEVICE_TYPE, sizeof(cl_device_type), &device_type, NULL), "Error getting device info");
CHKRET(clGetDeviceInfo(devices[i], CL_DEVICE_ADDRESS_BITS, sizeof(nbits), &nbits, NULL), "Error getting device info");
int device_ok = config_backend->allowCPUDevice ?
(device_type & (CL_DEVICE_TYPE_CPU | CL_DEVICE_TYPE_GPU)) :
(device_type & CL_DEVICE_TYPE_GPU) && !(device_type & CL_DEVICE_TYPE_CPU);
if (Config->Debug) fprintf(STD_OUT, "Device %d -> %d: %s %s (%d bits)\n", i, device_ok ? gooddevices : -1, device_vendor, device_name, nbits);
if (device_ok)
{
devices[gooddevices++] = devices[i];
}
else if (device_type & CL_DEVICE_TYPE_CPU)
{
cpu_found = 1;
cpu_device = devices[i];
}
}
if (cpu_found == 0)
{
if (config_backend->allowCPUDevice == false && Config->CPUInContext)
{
ERRRET("No CPU OpenCL device found for mapping buffers\n");
}
else
{
Config->CPUInContext = false;
}
}
if (gooddevices == 0)
{
ERRRET("No OpenCL GPU device found\n");
}
nDevices = gooddevices;
if (nDevices > (signed) max_devices) nDevices = max_devices;
if (nDevices > Config->NumDevices) nDevices = Config->NumDevices;
if (deviceNum >= nDevices) ERRRET("OpenCL Device %d not available\n", deviceNum);
if (deviceNum >= 0) nDevices = 1;
if (!Config->UseGPU) nDevices = 0;
gpu_available = (nDevices > 0);
if (nDevices > 1 && !Config->MultiThread)
{
fprintf(STD_OUT, "Cannot use multiple devices without multithreading\n");
nDevices = 1;
}
for (int i = 0;i < nDevices;i++)
{
if (deviceNum >= 0) ocl_devices[i] = devices[deviceNum];
else ocl_devices[i] = devices[Config->DeviceNums[i]];
}
ocl_devices[nDevices] = cpu_device;
delete[] devices;
ocl_context = clCreateContext(NULL, nDevices + (Config->CPUInContext ? 1 : 0), ocl_devices, NULL, NULL, &ocl_error);
CHKRET(ocl_error, "Error creating OpenCL context");
for (int i = 0;i < nDevices;i++)
{
for (int j = 0;j < (Config->AlternateSimpleQueuing ? 3 : obuffercount);j++)
{
#ifdef CL_VERSION_2_0
cl_queue_properties flags[] = {CL_QUEUE_PROPERTIES, 0, 0};
if (Config->VerboseTiming || (Config->PipelinedOperation && CALDGEMM_OPENCL_PROFILED_PIPELINE)) flags[1] |= CL_QUEUE_PROFILING_ENABLE;
ocl_command_queues[i][j] = clCreateCommandQueueWithProperties(ocl_context, ocl_devices[i], flags, &ocl_error);
#else
cl_command_queue_properties flags = 0;
if (Config->VerboseTiming || (Config->PipelinedOperation && CALDGEMM_OPENCL_PROFILED_PIPELINE)) flags |= CL_QUEUE_PROFILING_ENABLE;
ocl_command_queues[i][j] = clCreateCommandQueue(ocl_context, ocl_devices[i], flags, &ocl_error);
#endif
CHKRET(ocl_error, "Error creating OpenCL command queue");
}
if (Config->AsyncSideQueue)
{
#ifdef CL_VERSION_2_0
ocl_async_queue[i] = clCreateCommandQueueWithProperties(ocl_context, ocl_devices[i], NULL, &ocl_error);
#else
ocl_async_queue[i] = clCreateCommandQueue(ocl_context, ocl_devices[i], 0, &ocl_error);
#endif
CHKRET(ocl_error, "Error creating async OpenCL command queue");
}
}
if (Config->CPUInContext)
{
#ifdef CL_VERSION_2_0
ocl_command_queue_cpu = clCreateCommandQueueWithProperties(ocl_context, ocl_devices[nDevices], NULL, &ocl_error);
#else
ocl_command_queue_cpu = clCreateCommandQueue(ocl_context, ocl_devices[nDevices], 0, &ocl_error);
#endif
CHKRET(ocl_error, "Error creating OpenCL CPU command queue");
}
AlternateLookaheadDoneMutexSQ.Lock();
return(0);
}
int caldgemm_opencl::ValidateRuntime()
{
if (Config->Debug) fprintf(STD_OUT, "OPENCL ValidateRuntime\n");
Config->MultiThreadDivide = false;
if (Config->ThreadSaveDriver != -1) Config->ThreadSaveDriver = 1;
if (Config->GPU_C == -1) Config->GPU_C = 1;
if (Config->SimpleGPUQueuing)
{
if (Config->GPU_C == 0)
{
fprintf(STD_OUT, "SimpleGPUQueuing works only in combination with GPU_C\n");
return(1);
}
if (Config->NoConcurrentKernels)
{
fprintf(STD_OUT, "Automatically disabling NoConcurrentKernels when SimpleGPUQueuing is active...\n");
Config->NoConcurrentKernels = 0;
}
}
cl_uint num_platforms;
CHKRET(clGetPlatformIDs(0, NULL, &num_platforms), "Error getting OpenCL Platform Count");
if (num_platforms == 0) ERRRET("No OpenCL Platform found\n");
if (Config->Debug) fprintf(STD_OUT, "%d OpenCL Platforms found\n", num_platforms);
cl_platform_id* platforms = new cl_platform_id[num_platforms];
if (platforms == NULL) ERRRET("Memory allocation error");
CHKRET(clGetPlatformIDs(num_platforms, platforms, NULL), "Error getting OpenCL Platforms");
for (unsigned int i = 0;i < num_platforms;i++)
{
char platform_profile[64], platform_version[64], platform_name[64], platform_vendor[64];
CHKRET(clGetPlatformInfo(platforms[i], CL_PLATFORM_PROFILE, 64, platform_profile, NULL), "Error getting platform info");
CHKRET(clGetPlatformInfo(platforms[i], CL_PLATFORM_VERSION, 64, platform_version, NULL), "Error getting platform info");
CHKRET(clGetPlatformInfo(platforms[i], CL_PLATFORM_NAME, 64, platform_name, NULL), "Error getting platform info");
CHKRET(clGetPlatformInfo(platforms[i], CL_PLATFORM_VENDOR, 64, platform_vendor, NULL), "Error getting platform info");
if (Config->Debug) fprintf(STD_OUT, "Platform %d: (%s %s) %s %s\n", i, platform_profile, platform_version, platform_vendor, platform_name);
}
if (Config->OpenCLPlatform >= (signed) num_platforms) ERRRET("OpenCL Platform %d not available\n", Config->OpenCLPlatform);
ocl_platform = platforms[Config->OpenCLPlatform];
delete[] platforms;
#ifdef CL_VERSION_2_0
{
char platform_version[64], info[64];
double version;
CHKRET(clGetPlatformInfo(ocl_platform, CL_PLATFORM_VERSION, 64, platform_version, NULL), "Error getting platform info");
sscanf(platform_version, "OpenCL %lf %s", &version, info);
if (version < 2.0)
{
fprintf(STD_OUT, "This binary was compiled with OpenCL 2.0 headers and uses OpenCL 2.0 features, but your runtime is only at version %.1lf\n", version);
return(1);
}
}
#endif
if (Config->config_backend == NULL) Config->config_backend = new caldgemm_config_backend_opencl;
config_backend = (caldgemm_config_backend_opencl*) Config->config_backend;
if (config_backend->kernelLib != NULL)
{
if (Config->PrintILKernel)
{
fprintf(STD_OUT, "Cannot print kernel from 3ed party library\n");
}
#ifdef _WIN32
kernelLib = LoadLibrary(config_backend->kernelLib);
#else
kernelLib = dlopen(config_backend->kernelLib, RTLD_LAZY|RTLD_GLOBAL);
#endif
if (kernelLib == NULL)
{
fprintf(STD_OUT, "Error opening kernel library: %s\n", config_backend->kernelLib);
return(1);
}
#ifdef _WIN32
kernelLibCreate = (cl_kernel (*) (cl_context*, int, cl_device_id*, int, int, int)) GetProcAddress(kernelLib, "kernelLibCreate");
kernelLibQuerySettings = (void (*) (int*, int*, bool*, bool*, bool*, int*, int*, int*, int*)) GetProcAddress(kernelLib, "kernelLibQuerySettings");
kernelLibTerminate = (void (*) ()) GetProcAddress(kernelLib, "kernelLibTerminate");
kernelLibSuggestedMaxHeight = (size_t (*) ()) GetProcAddress(kernelLib, "suggestedMaxHeight");
kernelLibGetAutoHeight = (size_t (*) (size_t, size_t, int, size_t)) GetProcAddress(kernelLib, "getAutoHeight");
kernelLibModHeight = (void (*) (size_t, size_t)) GetProcAddress(kernelLib, "modHeight");
kernelLibInitialize = (int (*) (cl_platform_id)) GetProcAddress(kernelLib, "kernelLibInitialize");
#else
kernelLibCreate = (cl_kernel (*)(cl_context*, int, cl_device_id*, int, int, int)) dlsym(kernelLib, "kernelLibCreate");
kernelLibQuerySettings = (void (*) (int*, int*, bool*, bool*, bool*, int*, int*, int*, int*)) dlsym(kernelLib, "kernelLibQuerySettings");
kernelLibTerminate = (void (*) ()) dlsym(kernelLib, "kernelLibTerminate");
kernelLibSuggestedMaxHeight = (size_t (*) ()) dlsym(kernelLib, "suggestedMaxHeight");
kernelLibGetAutoHeight = (size_t (*) (size_t, size_t, int, size_t)) dlsym(kernelLib, "getAutoHeight");
kernelLibModHeight = (void (*) (size_t, size_t)) dlsym(kernelLib, "modHeight");
kernelLibInitialize = (int (*) (cl_platform_id)) dlsym(kernelLib, "kernelLibInitialize");
#endif
if (kernelLibCreate == NULL || kernelLibQuerySettings == NULL || kernelLibTerminate == NULL || kernelLibSuggestedMaxHeight == NULL || kernelLibGetAutoHeight == NULL || kernelLibModHeight == NULL || kernelLibInitialize == NULL)
{
fprintf(STD_OUT, "Error getting function pointer from external library (%p %p %p)\n", kernelLibCreate, kernelLibQuerySettings, kernelLibTerminate);
return(1);
}
if (kernelLibInitialize(ocl_platform))
{
fprintf(STD_OUT, "3rd Party DGEMM Library failed to initialize\n");
return(1);
}
kernelLibQuerySettings(&KernelSettings.tiling_x, &KernelSettings.tiling_y, &KernelSettings.transposeA, &KernelSettings.transposeB, &KernelSettings.texture_buffers, &KernelSettings.group_size_x, &KernelSettings.group_size_y, &KernelSettings.min_tile_size, &KernelSettings.min_k);
if (Config->Height == 0)
{
Config->Height = kernelLibSuggestedMaxHeight();
}
}
else
{
//Do not set default kernel settings
#ifdef CALDGEMM_TRANSPOSED_A
KernelSettings.transposeA = true;
#else
KernelSettings.transposeA = false;
#endif
#ifdef CALDGEMM_TRANSPOSED_B
KernelSettings.transposeB = true;
#else
KernelSettings.transposeB = false;
#endif
#ifdef OCL_USE_SIMPLE_BUFFERS
KernelSettings.texture_buffers = false;
#else
KernelSettings.texture_buffers = true;
#endif
KernelSettings.tiling_x = OCL_TILING_X;
KernelSettings.tiling_y = OCL_TILING_Y;
KernelSettings.group_size_x = OCL_GROUP_SIZE_X;
KernelSettings.group_size_y = OCL_GROUP_SIZE_Y;
KernelSettings.min_tile_size = 32;
KernelSettings.min_k = 4;
}
if (!(KernelSettings.transposeA ^ KernelSettings.transposeB))
{
fprintf(STD_OUT, "Must set either transposed A or transposed B\n");
return(1);
}
return(0);
}
int caldgemm_opencl::CheckDevices()
{
return(0);
}
int caldgemm_opencl::InitDevices()
{
if (Config->Debug) fprintf(STD_OUT, "OPENCL InitDevices\n");
cl_int ocl_error;
int num_bbuffers;
if (Config->max_bbuffers) num_bbuffers = Config->max_bbuffers;
else if (Config->DstMemory == 'g') num_bbuffers = max_bbuffers_g;
else num_bbuffers = max_bbuffers;
if (num_bbuffers > max_bbuffers)
{
fprintf(STD_OUT, "Requested number of bbuffers (%d) larger than max_bbuffers constant (%d)!", num_bbuffers, max_bbuffers);
return(1);
}
SetupBufferSizes();
cl_image_format ocl_image_format;
ocl_image_format.image_channel_order = CL_RGBA;
ocl_image_format.image_channel_data_type = CL_UNSIGNED_INT32;
cpu_set_t tmpmask, oldtmpmask;
sched_getaffinity(0, sizeof(oldtmpmask), &oldtmpmask);
for (int i = 0;i < nDevices;i++)
{
if (Config->AllocMapping[i] != -1)
{
CPU_ZERO(&tmpmask);
CPU_SET(Config->AllocMapping[i] + Config->CPUCoreOffset, &tmpmask);
sched_setaffinity(0, sizeof(tmpmask), &tmpmask);
}
for (int k = 0;k < (Config->PipelineDoubleBuffer ? 2 : 1);k++)
{
for (int j = 0;j < ibuffercount;j++)
{
if (!KernelSettings.texture_buffers)
{
ocl_abuffers[k][i][j] = clCreateBuffer(ocl_context, CL_MEM_READ_WRITE, BufferWidth * BufferHeight * sizeof(double), NULL, &ocl_error);
}
else
{
cl_image_desc image_desc;
memset(&image_desc, 0, sizeof(image_desc));
image_desc.image_type = CL_MEM_OBJECT_IMAGE2D;
if (KernelSettings.transposeB)
{
image_desc.image_width = BufferWidth / 2;
image_desc.image_height = BufferHeight;
ocl_abuffers[k][i][j] = clCreateImage(ocl_context, CL_MEM_READ_WRITE, &ocl_image_format, &image_desc, NULL, &ocl_error);
}
else //must be transposeA
{
image_desc.image_width = BufferHeight / 2;
image_desc.image_height = BufferWidth;
ocl_abuffers[k][i][j] = clCreateImage(ocl_context, CL_MEM_READ_WRITE, &ocl_image_format, &image_desc, NULL, &ocl_error);
}
}
CHKRET(ocl_error, "Error allocating device memory (A)");
}
CHKRET(clEnqueueMigrateMemObjects(ocl_command_queues[i][0], ibuffercount, &ocl_abuffers[k][i][0], 0, 0, NULL, NULL), "Error migrating mem object");
for (int j = 0;j < obuffercount;j++)
{
if (Config->DstMemory == 'g')
{
ocl_cbuffers[k][i][j] = clCreateBuffer(ocl_context, CL_MEM_READ_WRITE, BufferHeight * BufferHeight * sizeof(double), NULL, &ocl_error);
CHKRET(ocl_error, "Error allocating device memory (C)");
}
if (Config->GPU_C == 0 && k == 0)
{
ocl_tmp_cbuffers[i][j] = clCreateBuffer(ocl_context, CL_MEM_READ_WRITE | CL_MEM_ALLOC_HOST_PTR, BufferHeight * BufferHeight * sizeof(double), NULL, &ocl_error);
CHKRET(ocl_error, "Error allocating host memory (C tmp)");
ocl_tmp_cbuffers_ptr[i][j] = (double*) clEnqueueMapBuffer(ocl_command_queues[i][0], ocl_tmp_cbuffers[i][j], CL_TRUE, CL_MAP_READ, 0, BufferHeight * BufferHeight * sizeof(double), 0, NULL, NULL, &ocl_error);
CHKRET(ocl_error, "Error mapping host memory (C tmp)");
memset(ocl_tmp_cbuffers_ptr[i][j], 0, BufferHeight * BufferHeight * sizeof(double));
if (Config->DstMemory == 'g')
{
CHKRET(clEnqueueWriteBuffer(ocl_command_queues[i][0], ocl_cbuffers[k][i][j], CL_TRUE, 0, BufferHeight * BufferHeight * sizeof(double), ocl_tmp_cbuffers_ptr[i][j], 0, NULL, NULL), "Error initializing GPU buffer with zero");
}
}
}
if (Config->DstMemory == 'g') CHKRET(clEnqueueMigrateMemObjects(ocl_command_queues[i][0], obuffercount, &ocl_cbuffers[k][i][0], 0, 0, NULL, NULL), "Error migrating mem object");
for (int j = 0;j < (Config->GPU_C ? obuffercount : ibuffercount);j++)
{
cl_int tmp_flags = Config->GPU_C ? CL_MEM_READ_ONLY : (CL_MEM_ALLOC_HOST_PTR | CL_MEM_READ_WRITE);
ocl_tmp_abuffers[k][i][j] = clCreateBuffer(ocl_context, tmp_flags, BufferWidth * BufferHeight * sizeof(double), NULL, &ocl_error);
CHKRET(ocl_error, "Error allocating device memory (A tmp - Width: %lld Height: %lld)", (long long int) BufferWidth, (long long int) BufferHeight);
ocl_tmp_bbuffers[k][i][j] = clCreateBuffer(ocl_context, tmp_flags, BufferWidth * BufferHeight * sizeof(double), NULL, &ocl_error);
CHKRET(ocl_error, "Error allocating device memory (B tmp)");
if (Config->GPU_C == 0 && k == 0)
{
ocl_tmp_abuffers_ptr[i][j] = (double*) clEnqueueMapBuffer(ocl_command_queues[i][0], ocl_tmp_abuffers[k][i][j], CL_TRUE, CL_MAP_WRITE, 0, BufferWidth * BufferHeight * sizeof(double), 0, NULL, NULL, &ocl_error);
CHKRET(ocl_error, "Error mapping buffer (A)");
ocl_tmp_bbuffers_ptr[i][j] = (double*) clEnqueueMapBuffer(ocl_command_queues[i][0], ocl_tmp_bbuffers[k][i][j], CL_TRUE, CL_MAP_WRITE, 0, BufferWidth * BufferHeight * sizeof(double), 0, NULL, NULL, &ocl_error);
CHKRET(ocl_error, "Error mapping buffer (B)");
}
}
if (Config->GPU_C)
{
CHKRET(clEnqueueMigrateMemObjects(ocl_command_queues[i][0], obuffercount, &ocl_tmp_abuffers[k][i][0], 0, 0, NULL, NULL), "Error migrating mem object");
CHKRET(clEnqueueMigrateMemObjects(ocl_command_queues[i][0], obuffercount, &ocl_tmp_bbuffers[k][i][0], 0, 0, NULL, NULL), "Error migrating mem object");
}
for (int j = 0;j < num_bbuffers;j++)
{
if (!KernelSettings.texture_buffers)
{
ocl_bbuffers[k][i][j] = clCreateBuffer(ocl_context, CL_MEM_READ_WRITE, BufferWidth * BufferHeight * sizeof(double), NULL, &ocl_error);
}
else
{
cl_image_desc image_desc;
memset(&image_desc, 0, sizeof(image_desc));
image_desc.image_type = CL_MEM_OBJECT_IMAGE2D;
if (KernelSettings.transposeB)
{
image_desc.image_width = BufferWidth / 2;
image_desc.image_height = BufferHeight;
ocl_bbuffers[k][i][j] = clCreateImage(ocl_context, CL_MEM_READ_WRITE, &ocl_image_format, &image_desc, NULL, &ocl_error);
}
else //must be transposeA
{
image_desc.image_width = BufferHeight / 2;
image_desc.image_height = BufferWidth;
ocl_bbuffers[k][i][j] = clCreateImage(ocl_context, CL_MEM_READ_WRITE, &ocl_image_format, &image_desc, NULL, &ocl_error);
}
}
if (ocl_error != CL_SUCCESS)
{
if (j < obuffercount)
{
CHKRET(ocl_error, "Error allocating device memory (B)");
}
else break;
}
ocl_error = clEnqueueMigrateMemObjects(ocl_command_queues[i][0], 1, &ocl_bbuffers[k][i][j], 0, 0, NULL, NULL);
if (ocl_error != CL_SUCCESS)
{
if (j < obuffercount)
{
CHKRET(ocl_error, "Error migrating device memory (B)");
}
else break;
}
bbuffers[i] = j + 1;
}
}
if (Config->Debug) fprintf(STD_OUT, "Allocated %d BBuffers on Device %d\n", bbuffers[i], i);
if (Config->AsyncSideQueue)
{
for (int j = 0;j < 4;j++)
{
ocl_async_buffers[i][j] = clCreateBuffer(ocl_context, CL_MEM_READ_WRITE, std::max<size_t>(BufferWidth, BufferHeight) * std::max<size_t>(BufferWidth, BufferHeight) * sizeof(double), NULL, &ocl_error);
CHKRET(ocl_error, "Error allocating async device memory %d/%d", i, j);
}
CHKRET(clEnqueueMigrateMemObjects(ocl_command_queues[i][0], 4, &ocl_async_buffers[i][0], 0, 0, NULL, NULL), "Error migrating async mem object");
}
clFinish(ocl_command_queues[i][0]); //Finish migrating memory objects
}
sched_setaffinity(0, sizeof(oldtmpmask), &oldtmpmask);
for (int j = 0;j < 3 + 1 + (Config->GPU_C ? 1 : 0) + (Config->AsyncDTRSM ? 2 : 0);j++)
{
if ((j != 3 || Config->Use3rdPartyTranspose) && config_backend->kernelLib != NULL)
{
if (Config->PrintILKernel)
{
fprintf(STD_OUT, "Cannot print kernel from 3ed party library\n");
}
for (int i = 0;i < nDevices;i++)
{
if (j < 5)
{
ocl_kernel[i][j] = kernelLibCreate(&ocl_context, nDevices, ocl_devices, j, Config->Width, Config->GPU_C == 0);
if (ocl_kernel[i][j] == 0)
{
fprintf(STD_OUT, "Error obtaining kernel from external library\n");
return(1);
}
}
if (Config->AsyncSideQueue && (j == 0 || j == 3 || j >= 5))
{
int num = j >= 5 ? j - 3 : (j == 3 ? 1 : 0);
ocl_async_kernel[i][num] = kernelLibCreate(&ocl_context, nDevices, ocl_devices, j, Config->Width, Config->GPU_C == 0);
if (ocl_async_kernel[i][num] == 0)
{
fprintf(STD_OUT, "Error obtaining async kernel from external library\n");
return(1);
}
}
}
}
else
{
if (j == 5)
{
fprintf(STD_OUT, "AsyncDTRSM only supported with 3rd party lib\n");
return(1);
}
const char* sourceCode;
switch (j)
{
case 0:
sourceCode = OCLKernel;
break;
case 1:
sourceCode = OCLKernelALPHA1;
break;
case 2:
sourceCode = OCLKernelLinpack;
break;
case 3:
sourceCode = KernelSettings.texture_buffers ? OCLConvertKernelTex : OCLConvertKernel;
break;
case 4:
sourceCode = OCLKernel;
break;
}
if (Config->PrintILKernel)
{
fprintf(STD_OUT, "OpenCL Kernel %d:\n%s\n\n", j, sourceCode);
}
ocl_program[j] = clCreateProgramWithSource(ocl_context, 1, &sourceCode, NULL, &ocl_error);
CHKRET(ocl_error, "Error creating program object");
ocl_error = clBuildProgram(ocl_program[j], nDevices, ocl_devices, Config->Disassemble ? "-save-temps=." : "", NULL, NULL);
if (ocl_error != CL_SUCCESS)
{
fprintf(STD_OUT, "OpenCL Error while building program: %d\n", ocl_error);
fprintf(STD_OUT, "OpenCL Kernel:\n\n%s\n\n", sourceCode);
char build_log[16384];
for (int i = 0;i < nDevices;i++)
{
clGetProgramBuildInfo(ocl_program[j], ocl_devices[i], CL_PROGRAM_BUILD_LOG, 16384, build_log, NULL);
fprintf(STD_OUT, "Build Log (device %d):\n\n%s\n\n", i, build_log);
}
return(1);
}
for (int i = 0;i < nDevices;i++)
{
ocl_kernel[i][j] = clCreateKernel(ocl_program[j], j == 3 ? "oclconkernel" : "oclkernel", &ocl_error);
CHKRET(ocl_error, "Error creating kernel");
if (Config->AsyncSideQueue && (j == 0 || j == 3))
{
ocl_async_kernel[i][j ? 1 : 0] = clCreateKernel(ocl_program[j], j == 3 ? "oclconkernel" : "oclkernel", &ocl_error);
CHKRET(ocl_error, "Error creating async kernel");
}
}
}
}
return(0);
}
int caldgemm_opencl::ReinitDevices()
{
if (Config->Debug) fprintf(STD_OUT, "OPENCL ReinitDevices\n");
fprintf(STD_OUT, "Reinit of OpenCL devices not supported yet\n");
return(1);
}
int caldgemm_opencl::InitConstantData(double alpha)
{
return(0);
}
int caldgemm_opencl::ExecuteKernels(caldgemm::DGEMMPrepareAndExecuteTask& Task, int blockm, int blockn)
{
if (Config->Debug) fprintf(STD_OUT, "OPENCL ExecuteKernels\n");
if (Config->ThreadSaveDriver == -1) pthread_mutex_lock(&globalDriverLock);
if (Config->Debug) fprintf(STD_OUT, "\tExecuting MM kernel (device %d obuffer %d, k=%lld m=%lld n=%lld)\n", Task.device, Task.j, (long long int) Task.k, (long long int) blockm, (long long int) blockn);
if (Config->GPU_C && Task.kernel_num == 2) Task.kernel_num = 4;
#ifdef REUSE_BBUFFERS
if (!DGEMM_favor_m && buffersSwitchable)
{
const int buffer_pos = buffer_pointers_A[Task.device][blockm] % (buffer_pointers_A[Task.device][blockm] < bbuffers[Task.device] ? bbuffers[Task.device] : ibuffercount);
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 1, sizeof(cl_mem), &ocl_bbuffers[pipelineBuffer][Task.device][buffer_pos]), "Error setting kernel memory A");
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 2, sizeof(cl_mem), &ocl_abuffers[pipelineBuffer][Task.device][buffer_pointers_B[Task.device][blockn] % ibuffercount]), "Error setting kernel memory B");
}
else
#endif
{
#ifdef REUSE_BBUFFERS
const bool buffersSufficiant = buffer_pointers_B[Task.device][blockn] < bbuffers[Task.device];
#else
const bool buffersSufficiant = false;
#endif
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 1, sizeof(cl_mem), &ocl_abuffers[pipelineBuffer][Task.device][buffer_pointers_A[Task.device][blockm] % ibuffercount]), "Error setting kernel memory A");
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 2, sizeof(cl_mem), &ocl_bbuffers[pipelineBuffer][Task.device][!buffersSufficiant ? (buffer_pointers_B[Task.device][blockn] % ibuffercount) : (buffer_pointers_B[Task.device][blockn] % bbuffers[Task.device])]), "Error setting kernel memory B");
}
int pitch;
cl_ulong offset; //uling should always be 64-bit in OpenCL
int height1 = (int) (((size_t) blockn == gpu_n / Config->Height) ? (gpu_n % Config->Height) : Config->Height);
int height2 = (int) (((size_t) blockm == gpu_m / Config->Height) ? (gpu_m % Config->Height) : Config->Height);
if (Config->DstMemory == 'g')
{
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 0, sizeof(cl_mem), &ocl_cbuffers[pipelineBuffer][Task.device][Task.j]), "Error setting kernel memory C");
pitch = height1;
offset = 0;
}
else if (Config->GPU_C == 0)
{
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 0, sizeof(cl_mem), &ocl_tmp_cbuffers[Task.device][Task.j]), "Error setting kernel memory C");
pitch = height1;
offset = 0;
}
else
{
cl_mem mem_c_matrix = 0;
size_t matrix_offset = 0;
if (GetMemoryInfo(&mem_c_matrix, NULL, &matrix_offset, C + blockn * Config->Height + blockm * Config->Height * C_pitch)) CHKRET(CL_INVALID_MIP_LEVEL, "Error obtaining memory info");
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 0, sizeof(cl_mem), &mem_c_matrix), "Error setting kernel memory C");
pitch = C_pitch;
offset = matrix_offset / sizeof(C[0]);
}
double beta = Config->GPU_C ? Beta : 0.;
double alpha = Task.kernel_num == 2 ? 1. : Alpha;
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 3, sizeof(int), &height1), "Error setting kernel arg height1");
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 4, sizeof(int), &height2), "Error setting kernel arg height2");
int width = Config->Width;
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 5, sizeof(int), &width), "Error setting kernel arg width");
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 6, sizeof(double), &alpha), "Error setting kernel arg alpha");
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 7, sizeof(double), &beta), "Error setting kernel arg beta");
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 8, sizeof(int), &pitch), "Error setting kernel arg pitch");
CHKRET(clSetKernelArg(ocl_kernel[Task.device][Task.kernel_num], 9, sizeof(cl_ulong), &offset), "Error setting kernel arg offset");
size_t local_size[2] = {(size_t) KernelSettings.group_size_x, (size_t) KernelSettings.group_size_y};
size_t global_size[2] = {(size_t) height1 / KernelSettings.tiling_x, (size_t) height2 / KernelSettings.tiling_y};
if (Config->Debug) fprintf(STD_OUT, "MM Kernel: height1 %d height2 %d width %d alpha %f beta %f pitch %d offset %lld\n", height1, height2, width, Alpha, Beta, pitch, (long long int) offset);
cl_event* kernel_event;
cl_event* need_retain_kernel_event = NULL;
int need_release_kernel_event_after_transfer = 0;
cl_event tmp_event;
int wait_num_events = 0;
cl_event* wait_event = NULL;
cl_event simple_queue_event[2];
cl_event* simple_queue_lookahead_event = NULL;
int use_queue = Config->AlternateSimpleQueuing ? 2 : Task.j;
if (Config->SimpleGPUQueuing)
{
if (ExecLinpack >= 2 && Config->AlternateLookahead > matrix_n && AlternateLookaheadTilesRemaining && blockm < AlternateLookaheadBlocksM)
{
simple_queue_lookahead_event = &AlternateLookaheadTilesRemainingSQ_events[AlternateLookaheadTilesRemaining - 1];
}
if (Config->DstMemory == 'g')
{
kernel_event = NULL;
}
else