extern void opencl_set_kernel_arg(cl_kernel kernel, ushort i, cl_var var)
{
char name[128], str[152];
clCheckError(clGetKernelInfo(kernel, CL_KERNEL_FUNCTION_NAME, 128, name, NULL), "while getting kernel name");
sprintf(str, "setting args for kernel %s", name);
clCheckError(clSetKernelArg(kernel, i, var.n>1 ? sizeof(cl_mem) : var.type_size, var.val), str);
}
extern cl_program opencl_create_program_from_source(const char *kernel_filename, const char *options)
{
cl_program program;
int err;
char * kernel_src = malloc(11+strlen(kernel_filename)), * opts = malloc(strlen(options)+5);
strcat(strcat(strcpy(kernel_src, "#include<"), kernel_filename), ">");
program = clCreateProgramWithSource(context, 1, (const char **)&kernel_src, NULL, &err);
clCheckError(err, "creating 'include' program ");
err = clBuildProgram(program, 0, NULL, strcat(strcpy(opts, options), " -I."), NULL, NULL);
if (err == CL_BUILD_PROGRAM_FAILURE)
{
char * build_log;
uint i;
for (i=0; i<ndevices; i++)
{
size_t log_size;
clGetProgramBuildInfo(program, devices[i], CL_PROGRAM_BUILD_LOG, 0, NULL, &log_size);
if (log_size>2)
{
fprintf(stderr, "OpenCL> %s build log [device #%i]:\n", kernel_filename, i);
build_log = (char *)malloc(log_size);
clGetProgramBuildInfo(program, devices[i], CL_PROGRAM_BUILD_LOG, log_size, build_log, NULL);
fputs(build_log, stderr);
free(build_log);
}
}
}
clCheckError(err, "building program");
return program;
}
extern void opencl_init(uint platform_id, cl_device_type device_type)
{
cl_platform_id platforms[platform_id + 1];
clCheckError(clGetPlatformIDs(platform_id + 1, platforms, NULL), "getting platform id");
platform = platforms[platform_id];
cl_context_properties cps[3] = { CL_CONTEXT_PLATFORM, (cl_context_properties)platform, 0 };
clCheckError(clGetDeviceIDs(platform, device_type, 0, NULL, &ndevices), "getting devices number");
devices = (cl_device_id *)malloc(ndevices * sizeof(cl_device_id));
int err = clGetDeviceIDs(platform, device_type, ndevices, devices, NULL);
if (err != CL_SUCCESS)
{
if (device_type == CL_DEVICE_TYPE_GPU)
fputs("OpenCL> Error: no capable GPU device found!\n", stderr);
else if (device_type == CL_DEVICE_TYPE_CPU)
fputs("OpenCL> Error: no capable CPU device found!\n", stderr);
else
fputs("OpenCL> Error: no capable device found!\n", stderr);
clCheckError(err, "getting devices ids");
}
cid = 0;
context = clCreateContext(cps, ndevices, devices, NULL, NULL, &err); clCheckError(err, "creating context");
queues = (cl_command_queue *)malloc(ndevices * sizeof(cl_command_queue));
uint i;
for (i=0; i < ndevices; i++)
queues[i] = clCreateCommandQueue(context, devices[i], 0, &err); clCheckError(err, "creating command queue");
GWS[0] = LWS[0] = 64;
ND = 1;
GWS[1] = GWS[2] = LWS[1] = LWS[2] = 0;
}
extern void opencl_run_kernel(cl_kernel kernel)
{
//clGetKernelInfo(kernel, CL_KERNEL_FUNCTION_NAME, 0, NULL, &n);
char name[128], str[145];
clCheckError(clGetKernelInfo(kernel, CL_KERNEL_FUNCTION_NAME, 128, name, NULL), "while getting kernel name");
sprintf(str, "launching kernel %s", name);
clCheckError(clEnqueueNDRangeKernel(queues[cid], kernel, ND, NULL, GWS, LWS, 0, NULL, NULL), str);
}
extern void opencl_write_program_to_file(const cl_program program, const char * output_filename)
{
size_t binary_size;
clCheckError(clGetProgramInfo(program, CL_PROGRAM_BINARY_SIZES, sizeof(size_t), &binary_size, NULL), "getting binary size");
unsigned char * binary = (unsigned char *)malloc(binary_size);
clCheckError(clGetProgramInfo(program, CL_PROGRAM_BINARIES, sizeof(char *), &binary, NULL), "getting binary");
FILE * f = fopen(output_filename, "w");
if (f==NULL) { fprintf(stderr, "Error opening \"%s\"!\n", output_filename); exit(EXIT_FAILURE); }
uint i;
for (i=0; i<binary_size; i++) fputc(binary[i], f);
fclose(f);
}
extern void opencl_done()
{
clCheckError(clReleaseContext(context), "releasing context");
uint i;
for (i=0; i<ndevices; i++)
{
clCheckError(clReleaseCommandQueue(queues[i]), "releasing queues");
clCheckError(clReleaseDevice(devices[i]), "releasing devices");
}
free(queues);
free(devices);
}
void LSHReservoirSampler::clCommandQueue() {
// Create command queue.Properties(2): CL_QUEUE_PROFILING_ENABLE, CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE.
#ifdef OPENCL_2XX
command_queue_gpu = clCreateCommandQueueWithProperties(context_gpu, devices_gpu[CL_DEVICE_ID], NULL, &_err);
clCheckError(_err, "[OpenCL] Couldn't create command queue for GPU.");
//command_queue_cpu = clCreateCommandQueueWithProperties(context_cpu, devices_cpu[CL_CPU_DEVICE], NULL, &_err);
//clCheckError(_err, "[OpenCL] Couldn't create command queue for CPU.");
#else
command_queue_gpu = clCreateCommandQueue(context_gpu, devices_gpu[CL_DEVICE_ID], NULL, &_err);
clCheckError(_err, "[OpenCL] Couldn't create command queue for GPU.");
//command_queue_cpu = clCreateCommandQueue(context_cpu, devices_cpu[CL_CPU_DEVICE], NULL, &_err);
//clCheckError(_err, "[OpenCL] Couldn't create command queue for CPU.");
#endif
}
bool AutoExposure::init(cl_context context, cl_device_id device, QSize computeSize, int updatePeriod)
{
assert(!_initialized);
_updatePeriod= updatePeriod;
_lumaSize= computeSize;
// Compile kernel and set arguments
CLUtils::KernelDefines downDefines;
downDefines["GAMMA_CORRECT"]= "2.2f";
_downKernel= CLUtils::loadKernelPath(context, device, ":/kernels/lumaDownsample.cl",
"lumaDownsample", downDefines, QStringList("../res/kernels/"));
if(!_downKernel) {
debugWarning("Could not compile kernel.");
return false;
}
_lumaData= (uchar*)malloc(lumaDataBytes());
if(!_lumaData) {
debugWarning("Could not allocate data.");
return false;
}
cl_int error;
// This image could be WRITE_ONLY
_lumaImage= clCreateImage2D(context, CL_MEM_READ_WRITE, clFormatGL(GL_R),
_lumaSize.width(), _lumaSize.height(), 0, 0, &error);
if(clCheckError(error, "clCreateImage2D")) {
free(_lumaData);
return false;
}
_initialized= true;
return true;
}
extern void opencl_set_kernel_args(cl_kernel kernel, ...)
{
char name[128], str[152];
clCheckError(clGetKernelInfo(kernel, CL_KERNEL_FUNCTION_NAME, 128, name, NULL), "while getting kernel name");
sprintf(str, "setting args for kernel %s", name);
uint i, n;
clCheckError(clGetKernelInfo(kernel, CL_KERNEL_NUM_ARGS, sizeof(uint), &n, NULL), str);
cl_var var;
va_list vl;
va_start(vl, kernel);
for (i=0; i<n; i++)
{
var = va_arg(vl, cl_var);
clCheckError(clSetKernelArg(kernel, i, var.n>1 ? sizeof(cl_mem) : var.type_size, var.val), str);
}
va_end(vl);
}
extern cl_kernel opencl_create_kernel(cl_program program, const char *kernel_name)
{
char str[144];
sprintf(str, "creating kernel %s", kernel_name);
int err;
cl_kernel kernel = clCreateKernel(program, kernel_name, &err);
clCheckError(err, str);
return kernel;
}
extern cl_kernel opencl_create_kernel(cl_program program, const char * kernel_name)
{
char * str = (char *)malloc(strlen(kernel_name) + 17);
sprintf(str, "creating kernel %s", kernel_name);
int err;
cl_kernel kernel = clCreateKernel(program, kernel_name, &err);
clCheckError(err, str);
return kernel;
}
extern void opencl_get_var(const cl_var var, void * val)
{
if (var.n==1)
{
uint i;
for (i=0; i<var.type_size; i++)
((char *)val)[i] = var.val[i];
}
else
clCheckError(clEnqueueReadBuffer(queues[cid], *((cl_mem *)var.val), CL_TRUE, 0, var.type_size*var.n, val, 0, NULL, NULL), "reading from buffer");
}
// I may change it if I want to set var by value (not with pointer arg) (use ... in args + check var.type_size).
// so basically I may "overload" a function to receive variables with different types by using "..." (if I check for type (or type size) and use correspondent va_arg()).
extern void opencl_set_var(cl_var var, const void * val)
{
if (var.n==1)
{
if (var.val == NULL)
var.val = malloc(var.type_size);
uint i;
for (i=0; i<var.type_size; i++)
var.val[i] = ((char *)val)[i];
}
else
{
if (var.val == NULL)
{
int err;
var.val = malloc(sizeof(cl_mem));
*((cl_mem *)var.val) = clCreateBuffer(context, CL_MEM_READ_WRITE, var.type_size*var.n, NULL, &err);
clCheckError(err, "creating buffer");
}
clCheckError(clEnqueueWriteBuffer(queues[cid], *((cl_mem *)var.val), CL_TRUE, 0, var.type_size*var.n, val, 0, NULL, NULL), "writing to buffer");
}
}
//extern cl_program opencl_create_program(const char *kernel_filename, ...)
extern cl_program opencl_create_program(const char *kernel_filename, const char *options)
{
cl_program program;
int err;
FILE * kf = fopen(kernel_filename, "r"); if (kf==NULL) clCheckError(CL_SUCCESS+1, "opening kernel file");
size_t kfs = 0; while (fgetc(kf)!=EOF) kfs++; rewind(kf);
char * kernel_src = (char *)malloc(kfs);
uint i; for (i=0; i<kfs; i++) kernel_src[i] = fgetc(kf); fclose(kf);
for (i=0; kernel_filename[i]!='.' && kernel_filename[i]!='\0'; i++);
if (kernel_filename[i]!='\0' && kernel_filename[i+1]!='\0' && kernel_filename[i+1]=='c' &&
(kernel_filename[i+2]=='\0' || kernel_filename[i+2]=='l'))
{
program = clCreateProgramWithSource(context, 1, (const char **)&kernel_src, (const size_t *)&kfs, &err);
clCheckError(err, "creating program from source");
err = clBuildProgram(program, 0, NULL, options, NULL, NULL);
if (err == CL_BUILD_PROGRAM_FAILURE)
{
size_t log_size;
clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_LOG, 0, NULL, &log_size);
if (log_size>2)
{
fprintf(stderr, "OpenCL> %s build log:\n", kernel_filename);
char * build_log = (char *)malloc(log_size);
clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_LOG, log_size, build_log, NULL);
fputs(build_log, stderr);
free(build_log); build_log = NULL;
}
}
clCheckError(err, "building program");
}
else
{
program = clCreateProgramWithBinary(context, 1, &device_id, (const size_t *)&kfs, (const unsigned char **)&kernel_src, NULL, &err);
clCheckError(err, "creating program from binary");
}
free(kernel_src); kernel_src = NULL;
return program;
}
void AutoExposure::update(cl_command_queue queue, cl_mem image)
{
assert(_initialized);
// If auto-exposure is disabled, don't do anything
if(!_autoExposure)
return;
// Increse/decrease exposure from the difference between the current luma
// average with an expected 0.5 frame average.
_exposure *= 1.0f + qBound(-_adjustSpeed, 0.5f - _exposureData.meteringAverage, _adjustSpeed);
_updateCounter++;
if(_updateCounter % _updatePeriod)
return;
_updateCounter= 0;
int ai= 0;
clKernelArg(_downKernel, ai++, image);
clKernelArg(_downKernel, ai++, _lumaImage);
if(!clLaunchKernelEvent(_downKernel, queue, _lumaSize, "AE/Downsample"))
return;
// Download image data
cl_event& downloadEvent= analytics.clEvent("AE/Download");
size_t origin[3]= { 0,0,0 };
size_t region[3]= { (size_t)_lumaSize.width(), (size_t)_lumaSize.height(), 1 };
cl_int error= clEnqueueReadImage(queue, _lumaImage, CL_FALSE, origin, region,
_lumaSize.width(),0,_lumaData,0,0, &downloadEvent);
if(clCheckError(error, "clEnqueueReadImage"))
return;
error= clSetEventCallback(downloadEvent, CL_COMPLETE, exposureCallback, (void*)this);
clCheckError(error, "clSetEventCallback");
// When the download is done, exposureCallback will be called
}
int main()
{
const cl_uint n_max = 16;
cl_uint i, j, n_platforms, n_devices;
cl_platform_id platforms[n_max];
cl_device_id devices[n_max];
clCheckError(clGetPlatformIDs(0, NULL, &n_platforms), "getting number of available platforms"); // seems strange: here first argument may be not 0, but not in clGetDeviceIDs
clCheckError(clGetPlatformIDs(n_platforms, platforms, NULL), "getting available platforms' IDs");
for (i=0; i<n_platforms; i++)
{
printf("\n============= Platform #%u =============\n", i+1);
if (!clSoftCheckError(clGetDeviceIDs(platforms[i], CL_DEVICE_TYPE_ALL, 0, NULL, &n_devices), "getting number of available devices")) // here the third argument must be 0
{
if (!clSoftCheckError(clGetDeviceIDs(platforms[i], CL_DEVICE_TYPE_ALL, n_devices, devices, NULL), "getting available devices' IDs"))
for (j=0; j<n_devices; j++)
{
printf("\n============== Device #%u ==============\n", j+1);
show_device_info(devices[j]);
}
}
}
return 0;
}
extern void opencl_free_var(cl_var var)
{
if (var.n==1)
{
free(var.val);
var.val = NULL;
}
else
{
clCheckError(clReleaseMemObject(*((cl_mem *)var.val)), "releasing buffer");
free(var.val);
var.val = NULL;
}
}
void LSHReservoirSampler::clContext() {
cl_uint num_context_devices; // TODO, currenly use 1 device for each platform.
// GPU context.
context_gpu = clCreateContext(NULL, 1, devices_gpu + CL_DEVICE_ID, NULL, NULL, &_err);
clCheckError(_err, "[OpenCL] Couldn't create a context.");
_err = clGetContextInfo(context_gpu, CL_CONTEXT_NUM_DEVICES,
sizeof(cl_uint), &num_context_devices, NULL);
printf("[OpenCL] Created GPU Context with %d device. \n", num_context_devices);
// CPU context.
//context_cpu = clCreateContext(NULL, 1, devices_cpu + CL_CPU_DEVICE, NULL, NULL, &_err);
//clCheckError(_err, "[OpenCL] Couldn't create a context.");
//_err = clGetContextInfo(context_cpu, CL_CONTEXT_NUM_DEVICES,
// sizeof(cl_uint), &num_context_devices, NULL);
//printf("[OpenCL] Created CPU Context with %d device. \n", num_context_devices);
}
extern void opencl_init(cl_device_type_id device_type_id)
{
cl_platform_id platform_id;
int err;
err = clGetPlatformIDs(1, &platform_id, NULL); clCheckError(err, "getting platform id");
cl_context_properties cps[3] = { CL_CONTEXT_PLATFORM, (cl_context_properties)platform_id, 0 };
switch (device_type_id)
{
case CPU:
if (clGetDeviceIDs(platform_id, CL_DEVICE_TYPE_CPU, 1, &device_id, NULL) != CL_SUCCESS)
{
if (clGetDeviceIDs(platform_id, CL_DEVICE_TYPE_GPU, 1, &device_id, NULL) != CL_SUCCESS)
{
fputs("OpenCL> Error: no capable devices found!\n", stderr);
clCheckError(-1, "getting device id");
}
fputs("OpenCL> Warning: CPU device not found, using GPU instead!\n", stderr);
}
break;
case GPU:
if (clGetDeviceIDs(platform_id, CL_DEVICE_TYPE_GPU, 1, &device_id, NULL) != CL_SUCCESS)
{
if (clGetDeviceIDs(platform_id, CL_DEVICE_TYPE_CPU, 1, &device_id, NULL) != CL_SUCCESS)
{
fputs("OpenCL> Error: no capable devices found!\n", stderr);
clCheckError(-1, "getting device id");
}
fputs("OpenCL> Warning: GPU device not found, using CPU instead!\n", stderr);
}
break;
default:
if (clGetDeviceIDs(platform_id, CL_DEVICE_TYPE_GPU, 1, &device_id, NULL) != CL_SUCCESS)
{
if (clGetDeviceIDs(platform_id, CL_DEVICE_TYPE_CPU, 1, &device_id, NULL) != CL_SUCCESS)
{
fputs("OpenCL> Error: no capable devices found!\n", stderr);
clCheckError(-1, "getting device id");
}
fputs("OpenCL> using CPU device\n", stderr);
}
else
fputs("OpenCL> using GPU device\n", stderr);
}
context = clCreateContext(cps, 1, &device_id, NULL, NULL, &err); clCheckError(err, "creating context");
queue = clCreateCommandQueue(context, device_id, 0, &err); clCheckError(err, "creating command queue");
GWS[0] = LWS[0] = 64;
ND = 1;
GWS[1] = GWS[2] = LWS[1] = LWS[2] = 0;
}
extern cl_var opencl_create_var(size_t type_size, uint n, cl_mem_flags flags, const void * val)
{
cl_var var;
var.type_size = type_size;
var.n = n;
if (var.n==1)
var.val = malloc(type_size);
else
{
int err;
var.val = malloc(sizeof(cl_mem));
//va_list vl;
//va_start(vl, n);
//cl_mem_flags flags = va_arg(vl, cl_mem_flags); // unidentified problems with this approach
//va_end(vl);
*((cl_mem *)var.val) = clCreateBuffer(context, flags==0 ? CL_MEM_READ_WRITE : flags, var.type_size*n, NULL, &err);
clCheckError(err, "creating buffer");
}
if (val != NULL) opencl_set_var(var, val);
return var;
}
void LSHReservoirSampler::clPlatformDevices() {
// Platforms.
cl_uint num_platforms;
cl_int platform_index = -1;
_err = clGetPlatformIDs(1, NULL, &num_platforms);
printf("[OpenCL] %d platform found. \n", num_platforms);
clCheckError(_err, "[OpenCL] Couldn't find any platforms.");
platforms = (cl_platform_id*)malloc(sizeof(cl_platform_id) * num_platforms);
clGetPlatformIDs(num_platforms, platforms, NULL);
cl_uint num_devices;
// GPU Platform.
_err = clGetDeviceIDs(platforms[CL_PLATFORM_ID], CL_DEVICE_TYPE_ALL, 1, NULL, &num_devices);
printf("[OpenCL] %d GPU device found. \n", num_devices);
clCheckError(_err, "[OpenCL] Couldn't find any GPU devices.");
devices_gpu = (cl_device_id*)malloc(sizeof(cl_device_id) * num_devices);
clGetDeviceIDs(platforms[CL_PLATFORM_ID], CL_DEVICE_TYPE_ALL, num_devices, devices_gpu, NULL);
// CPU Platform.
//_err = clGetDeviceIDs(platforms[CL_CPU_PLATFORM], CL_DEVICE_TYPE_ALL, 1, NULL, &num_devices);
//printf("[OpenCL] %d CPU device found. \n", num_devices);
//clCheckError(_err, "[OpenCL] Couldn't find any CPU devices.");
//devices_cpu = (cl_device_id*)malloc(sizeof(cl_device_id) * num_devices);
//clGetDeviceIDs(platforms[CL_CPU_PLATFORM], CL_DEVICE_TYPE_ALL, num_devices, devices_cpu, NULL);
#ifdef PRINT_CLINFO
cl_uint q0;
size_t q1;
cl_ulong q2;
char name_data[48], ext_data[4096];
for (int d = 0; d < num_devices; d++) {
printf("\n");
clGetDeviceInfo(devices_gpu[d], CL_DEVICE_NAME, sizeof(name_data), name_data, NULL);
printf("<<< Platform %d Device Info: %s >>> \n", d, name_data);
clGetDeviceInfo(devices_gpu[d], CL_DEVICE_ADDRESS_BITS, sizeof(q0), &q0, NULL);
printf("CL_DEVICE_ADDRESS_BITS: %u\n", q0);
clGetDeviceInfo(devices_gpu[d], CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS, sizeof(q0), &q0, NULL);
printf("CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS: %u\n", q0);
clGetDeviceInfo(devices_gpu[d], CL_DEVICE_GLOBAL_MEM_SIZE, sizeof(q2), &q2, NULL);
printf("CL_DEVICE_GLOBAL_MEM_SIZE: %" PRIu64 "\n", q2);
clGetDeviceInfo(devices_gpu[d], CL_DEVICE_LOCAL_MEM_SIZE, sizeof(q2), &q2, NULL);
printf("CL_DEVICE_LOCAL_MEM_SIZE: %" PRIu64 "\n", q2);
clGetDeviceInfo(devices_gpu[d], CL_DEVICE_MAX_COMPUTE_UNITS, sizeof(q0), &q0, NULL);
printf("CL_DEVICE_MAX_COMPUTE_UNITS: %u\n", q0);
clGetDeviceInfo(devices_gpu[d], CL_DEVICE_MAX_WORK_GROUP_SIZE, sizeof(q1), &q1, NULL);
printf("CL_DEVICE_MAX_WORK_GROUP_SIZE: %zu\n", q1);
clGetDeviceInfo(devices_gpu[d], CL_DEVICE_MAX_MEM_ALLOC_SIZE, sizeof(q0), &q0, NULL);
printf("CL_DEVICE_MAX_MEM_ALLOC_SIZE: %u\n", q0);
clGetDeviceInfo(devices_gpu[d], CL_DEVICE_MAX_PARAMETER_SIZE, sizeof(q0), &q0, NULL);
printf("CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT: %u\n", q0);
clGetDeviceInfo(devices_gpu[d], CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT, sizeof(q0), &q0, NULL);
printf("CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT: %u\n", q0);
clGetDeviceInfo(devices_gpu[d], CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT, sizeof(q0), &q0, NULL);
printf("CL_DEVICE_MAX_PARAMETER_SIZE: %u\n", q0);
clGetDeviceInfo(devices_gpu[d], CL_DEVICE_EXTENSIONS, sizeof(ext_data), ext_data, NULL);
printf("CL_DEVICE_EXTENSIONS: %s\n", ext_data);
printf("\n");
}
#endif
}
extern void opencl_free_kernel(cl_kernel kernel)
{
clCheckError(clReleaseKernel(kernel), "releasing kernel");
}
extern void opencl_free_program(cl_program program)
{
clCheckError(clReleaseProgram(program), "releasing program");
}
extern void opencl_sync()
{
clCheckError(clFinish(queues[cid]), "finishing queue");
}
void LSHReservoirSampler::clProgram() {
// Load and creat program.
FILE *program_handle;
const char *file_name[] = { PROGRAM_FILE_1, PROGRAM_FILE_2 };
const char options[] = "-cl-finite-math-only -cl-no-signed-zeros -w -cl-mad-enable -cl-fast-relaxed-math -I ./";
size_t program_size[NUM_FILES];
size_t log_size;
char *program_buffer[NUM_FILES];
for (int i = 0; i < NUM_FILES; i++) {
program_handle = fopen(file_name[i], "r");
if (program_handle == NULL) {
perror("[OpenCL] Couldn't find the program file");
pause();
exit(1);
}
fseek(program_handle, 0, SEEK_END);
program_size[i] = ftell(program_handle);
rewind(program_handle);
program_buffer[i] = (char*)malloc(program_size[i] + 1);
program_buffer[i][program_size[i]] = '\0';
fread(program_buffer[i], sizeof(char),
program_size[i], program_handle);
fclose(program_handle);
printf("[OpenCL] Program %d loaded, %d characters. \n", i, (int) program_size[i]);
}
program_gpu = clCreateProgramWithSource(context_gpu, NUM_FILES,
(const char**)program_buffer, program_size, &_err);
clCheckError(_err, "[OpenCL] Couldn't create CL program for GPU.");
//program_cpu = clCreateProgramWithSource(context_cpu, NUM_FILES,
// (const char**)program_buffer, program_size, &_err);
//clCheckError(_err, "[OpenCL] Couldn't create CL program for CPU.");
// Build GPU program.
_err = clBuildProgram(program_gpu, 1, devices_gpu + CL_DEVICE_ID, options, NULL, NULL);
if (_err < 0) {
clGetProgramBuildInfo(program_gpu, devices_gpu[CL_DEVICE_ID],
CL_PROGRAM_BUILD_LOG, 0, NULL, &log_size);
_program_log = (char*)malloc(log_size + 1);
_program_log[log_size] = '\0';
clGetProgramBuildInfo(program_gpu, devices_gpu[CL_DEVICE_ID],
CL_PROGRAM_BUILD_LOG,
log_size + 1, _program_log, NULL);
printf("%s\n", _program_log);
free(_program_log);
system("pause");
exit(1);
}
// Build CPU program.
//_err = clBuildProgram(program_cpu, 1, devices_cpu + CL_CPU_DEVICE, options, NULL, NULL);
//if (_err < 0) {
// clGetProgramBuildInfo(program_cpu, devices_cpu[CL_CPU_DEVICE],
// CL_PROGRAM_BUILD_LOG, 0, NULL, &log_size);
// _program_log = (char*)malloc(log_size + 1);
// _program_log[log_size] = '\0';
// clGetProgramBuildInfo(program_cpu, devices_cpu[CL_CPU_DEVICE],
// CL_PROGRAM_BUILD_LOG,
// log_size + 1, _program_log, NULL);
// printf("%s\n", _program_log);
// free(_program_log);
// system("pause");
// exit(1);
//}
for (int i = 0; i < NUM_FILES; i++) {
free(program_buffer[i]);
}
}
void LSHReservoirSampler::initHelper(int numTablesIn, int numHashPerFamilyIn, int reservoriSizeIn) {
/* Reservoir Random Number. */
std::cout << "[LSHReservoirSampler::initHelper] Generating random number for reservoir sampling ..." << std::endl;
std::default_random_engine generator1;
std::uniform_int_distribution<unsigned int> distribution_a(0, 0x7FFFFFFF);
_sechash_a = distribution_a(generator1) * 2 + 1;
std::uniform_int_distribution<unsigned int> distribution_b(0, 0xFFFFFFFF >> _numSecHash);
_sechash_b = distribution_b(generator1);
_global_rand = new unsigned int[_maxReservoirRand];
for (unsigned int i = 0; i < _maxReservoirRand; i++) {
std::uniform_int_distribution<unsigned int> distribution(0, i);
_global_rand[i] = distribution(generator1);
}
#if defined OPENCL_HASHTABLE
_globalRand_obj = clCreateBuffer(context_gpu, CL_MEM_READ_WRITE,
_maxReservoirRand * sizeof(unsigned int), NULL, &_err);
_err = clEnqueueWriteBuffer(command_queue_gpu, _globalRand_obj, CL_TRUE, 0,
_maxReservoirRand * sizeof(unsigned int), _global_rand, 0, NULL, NULL);
#endif
std::cout << "Completed. " << std::endl;
/* Hash tables. */
_tableMemReservoirMax = (_numTables - 1) * _aggNumReservoirs + _numReservoirsHashed;
_tableMemMax = _tableMemReservoirMax * (1 + _reservoirSize);
_tablePointerMax = _numTables * _numReservoirsHashed;
#if defined OPENCL_HASHTABLE
std::cout << "Initializing GPU-OpenCL tables and pointers ... " << std::endl;
_tableMem_obj = clCreateBuffer(context_gpu, CL_MEM_READ_WRITE,
_tableMemMax * sizeof(unsigned int), NULL, &_err);
clCheckError(_err, "[initHelper] Failed to alloc GPU _tableMem_obj.");
_err = clEnqueueFillBuffer(command_queue_gpu, _tableMem_obj, &_zero, sizeof(const int), 0,
_tableMemMax * sizeof(unsigned int), 0, NULL, NULL);
clCheckError(_err, "[initHelper] Failed to init GPU _tableMem_obj.");
_tableMemAllocator_obj = clCreateBuffer(context_gpu, CL_MEM_READ_WRITE,
_numTables * sizeof(unsigned int), NULL, &_err);
clCheckError(_err, "[initHelper] Failed to alloc GPU _tableMemAllocator_obj.");
_err = clEnqueueFillBuffer(command_queue_gpu, _tableMemAllocator_obj, &_zero, sizeof(const int), 0,
_numTables * sizeof(unsigned int), 0, NULL, NULL);
clCheckError(_err, "[initHelper] Failed to init GPU _tableMemAllocator_obj.");
_tablePointers_obj = clCreateBuffer(context_gpu, CL_MEM_READ_WRITE,
_tablePointerMax * sizeof(unsigned int), NULL, &_err);
clCheckError(_err, "[initHelper] Failed to alloc GPU _tablePointers_obj.");
_err = clEnqueueFillBuffer(command_queue_gpu, _tablePointers_obj, &_tableNull, sizeof(const int), 0,
_tablePointerMax * sizeof(unsigned int), 0, NULL, NULL);
clCheckError(_err, "[initHelper] Failed to init GPU _tablePointers_obj.");
clFinish(command_queue_gpu);
std::cout << "Completed. \n";
#elif defined CPU_TB
std::cout << "Initializing CPU tables and pointers ... " << std::endl;
_tableMem = new unsigned int[_tableMemMax]();
_tableMemAllocator = new unsigned int[_numTables]();
_tablePointers = new unsigned int[_tablePointerMax];
_tablePointersLock = new omp_lock_t[_tablePointerMax];
std::cout << "Completed. " << std::endl;
std::cout << "Initializing CPU tablePointers/Locks ... " << std::endl;
for (unsigned long long i = 0; i < _tablePointerMax; i++) {
_tablePointers[i] = TABLENULL;
omp_init_lock(_tablePointersLock + i);
}
std::cout << "Completed. " << std::endl;
std::cout << "Initializing CPU tableCountersLocks ... " << std::endl;
_tableCountersLock = new omp_lock_t[_tableMemReservoirMax];
for (unsigned long long i = 0; i < _tableMemReservoirMax; i++) {
omp_init_lock(_tableCountersLock + i);
}
std::cout << "Completed. " << std::endl;
#endif
/* Hashing counter. */
_sequentialIDCounter_kernel = 0;
}
uint opencl_get_platforms_number()
{
uint nplatforms;
clCheckError(clGetPlatformIDs(0, NULL, &nplatforms), "getting platforms number");
return nplatforms;
}
