darknet/src/opencl.c
2014-10-25 11:57:26 -07:00

209 lines
6.9 KiB
C

#ifdef GPU
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <clBLAS.h>
#include "opencl.h"
#include "utils.h"
cl_info cl = {0};
void check_error(cl_info info)
{
clFinish(cl.queue);
if (info.error != CL_SUCCESS) {
printf("\n Error number %d", info.error);
exit(1);
}
}
#define MAX_DEVICES 10
cl_info cl_init()
{
cl_info info;
info.initialized = 0;
cl_uint num_platforms, num_devices;
// Fetch the Platform and Device IDs; we only want one.
cl_device_id devices[MAX_DEVICES];
info.error=clGetPlatformIDs(1, &info.platform, &num_platforms);
printf("=== %d OpenCL platform(s) found: ===\n", num_platforms);
char buffer[10240];
clGetPlatformInfo(info.platform, CL_PLATFORM_PROFILE, 10240, buffer, NULL);
printf(" PROFILE = %s\n", buffer);
clGetPlatformInfo(info.platform, CL_PLATFORM_VERSION, 10240, buffer, NULL);
printf(" VERSION = %s\n", buffer);
clGetPlatformInfo(info.platform, CL_PLATFORM_NAME, 10240, buffer, NULL);
printf(" NAME = %s\n", buffer);
clGetPlatformInfo(info.platform, CL_PLATFORM_VENDOR, 10240, buffer, NULL);
printf(" VENDOR = %s\n", buffer);
clGetPlatformInfo(info.platform, CL_PLATFORM_EXTENSIONS, 10240, buffer, NULL);
printf(" EXTENSIONS = %s\n", buffer);
check_error(info);
info.error=clGetDeviceIDs(info.platform, CL_DEVICE_TYPE_ALL, MAX_DEVICES, devices, &num_devices);
if(num_devices > MAX_DEVICES) num_devices = MAX_DEVICES;
printf("=== %d OpenCL device(s) found on platform:\n", num_devices);
int i;
for (i=0; i<num_devices; i++)
{
char buffer[10240];
cl_uint buf_uint;
cl_ulong buf_ulong;
printf(" -- %d --\n", i);
clGetDeviceInfo(devices[i], CL_DEVICE_NAME, sizeof(buffer), buffer, NULL);
printf(" DEVICE_NAME = %s\n", buffer);
clGetDeviceInfo(devices[i], CL_DEVICE_VENDOR, sizeof(buffer), buffer, NULL);
printf(" DEVICE_VENDOR = %s\n", buffer);
clGetDeviceInfo(devices[i], CL_DEVICE_VERSION, sizeof(buffer), buffer, NULL);
printf(" DEVICE_VERSION = %s\n", buffer);
clGetDeviceInfo(devices[i], CL_DRIVER_VERSION, sizeof(buffer), buffer, NULL);
printf(" DRIVER_VERSION = %s\n", buffer);
clGetDeviceInfo(devices[i], CL_DEVICE_MAX_COMPUTE_UNITS, sizeof(buf_uint), &buf_uint, NULL);
printf(" DEVICE_MAX_COMPUTE_UNITS = %u\n", (unsigned int)buf_uint);
clGetDeviceInfo(devices[i], CL_DEVICE_MAX_CLOCK_FREQUENCY, sizeof(buf_uint), &buf_uint, NULL);
printf(" DEVICE_MAX_CLOCK_FREQUENCY = %u\n", (unsigned int)buf_uint);
clGetDeviceInfo(devices[i], CL_DEVICE_GLOBAL_MEM_SIZE, sizeof(buf_ulong), &buf_ulong, NULL);
printf(" DEVICE_GLOBAL_MEM_SIZE = %llu\n", (unsigned long long)buf_ulong);
clGetDeviceInfo(devices[i], CL_DEVICE_MAX_WORK_GROUP_SIZE, sizeof(buf_ulong), &buf_ulong, NULL);
printf(" DEVICE_MAX_WORK_GROUP_SIZE = %llu\n", (unsigned long long)buf_ulong);
cl_uint items;
clGetDeviceInfo( devices[i], CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS, sizeof(cl_uint),
&items, NULL);
printf(" DEVICE_MAX_WORK_ITEM_DIMENSIONS = %u\n", (unsigned int)items);
size_t workitem_size[10];
clGetDeviceInfo(devices[i], CL_DEVICE_MAX_WORK_ITEM_SIZES, 10*sizeof(workitem_size), workitem_size, NULL);
printf(" DEVICE_MAX_WORK_ITEM_SIZES = %u / %u / %u \n", (unsigned int)workitem_size[0], (unsigned int)workitem_size[1], (unsigned int)workitem_size[2]);
}
int index = getpid()%num_devices;
index = 1;
printf("%d rand, %d devices, %d index\n", getpid(), num_devices, index);
info.device = devices[index];
fprintf(stderr, "Found %d device(s)\n", num_devices);
check_error(info);
cl_context_properties properties[]={
CL_CONTEXT_PLATFORM, (cl_context_properties)info.platform,
0};
// Note that nVidia's OpenCL requires the platform property
info.context=clCreateContext(properties, 1, &info.device, 0, 0, &info.error);
check_error(info);
info.queue = clCreateCommandQueue(info.context, info.device, 0, &info.error);
check_error(info);
for(i = 0; i < NUM_QUEUES; ++i){
info.queues[i] = clCreateCommandQueue(info.context, info.device, 0, &info.error);
check_error(info);
}
info.error = clblasSetup();
check_error(info);
info.initialized = 1;
return info;
}
void wait_for_queues()
{
int i;
for(i = 0; i < NUM_QUEUES; ++i){
clFinish(cl.queues[i]);
}
}
cl_program cl_fprog(char *filename, char *options, cl_info info)
{
size_t srcsize;
char src[64*1024];
memset(src, 0, 64*1024);
FILE *fil=fopen(filename,"r");
if(fil == 0) file_error(filename);
srcsize=fread(src, sizeof src, 1, fil);
fclose(fil);
const char *srcptr[]={src};
// Submit the source code of the example kernel to OpenCL
cl_program prog=clCreateProgramWithSource(info.context,1, srcptr, &srcsize, &info.error);
check_error(info);
char build_c[1024*64];
// and compile it (after this we could extract the compiled version)
info.error=clBuildProgram(prog, 0, 0, options, 0, 0);
if ( info.error != CL_SUCCESS ) {
fprintf(stderr, "Error Building Program: %d\n", info.error);
clGetProgramBuildInfo( prog, info.device, CL_PROGRAM_BUILD_LOG, 1024*64, build_c, 0);
fprintf(stderr, "Build Log for %s program:\n%s\n", filename, build_c);
}
check_error(info);
return prog;
}
void cl_setup()
{
if(!cl.initialized){
cl = cl_init();
}
}
cl_kernel get_kernel(char *filename, char *kernelname, char *options)
{
cl_setup();
cl_program prog = cl_fprog(filename, options, cl);
cl_kernel kernel=clCreateKernel(prog, kernelname, &cl.error);
check_error(cl);
return kernel;
}
void cl_read_array(cl_mem mem, float *x, int n)
{
cl_setup();
clEnqueueReadBuffer(cl.queue, mem, CL_TRUE, 0, sizeof(float)*n,x,0,0,0);
check_error(cl);
}
void cl_write_array(cl_mem mem, float *x, int n)
{
cl_setup();
clEnqueueWriteBuffer(cl.queue, mem, CL_TRUE, 0,sizeof(float)*n,x,0,0,0);
check_error(cl);
}
void cl_copy_array(cl_mem src, cl_mem dst, int n)
{
cl_setup();
clEnqueueCopyBuffer(cl.queue, src, dst, 0, 0, sizeof(float)*n,0,0,0);
check_error(cl);
}
cl_mem cl_sub_array(cl_mem src, int offset, int size)
{
cl_buffer_region r;
r.origin = offset*sizeof(float);
r.size = size*sizeof(float);
cl_mem sub = clCreateSubBuffer(src, CL_MEM_READ_WRITE, CL_BUFFER_CREATE_TYPE_REGION, &r, &cl.error);
check_error(cl);
return sub;
}
cl_mem cl_make_array(float *x, int n)
{
cl_setup();
cl_mem mem = clCreateBuffer(cl.context,
CL_MEM_READ_WRITE|CL_MEM_COPY_HOST_PTR,
sizeof(float)*n, x, &cl.error);
check_error(cl);
return mem;
}
cl_mem cl_make_int_array(int *x, int n)
{
cl_setup();
cl_mem mem = clCreateBuffer(cl.context,
CL_MEM_READ_WRITE|CL_MEM_COPY_HOST_PTR,
sizeof(int)*n, x, &cl.error);
check_error(cl);
return mem;
}
#endif