cltest.c

#include <stdio.h>
#include <stdlib.h>
#include <CL/cl.h>
int main()
{
	cl_int err;
	cl_platform_id platform_ids[10];
	cl_uint number;
	err = clGetPlatformIDs(10, (cl_platform_id*) platform_ids, &number);
	if(err != CL_SUCCESS)
	{
		printf("clGetPlatformIDs() failed!\n");
		return 1;
	}
	printf("%d OpenCL platforms found!\n", number);

	cl_device_id device_ids[10];
	cl_uint numdevs;
	err = clGetDeviceIDs(platform_ids[0], CL_DEVICE_TYPE_GPU, 10, (cl_device_id*) device_ids, &numdevs);
	if(err != CL_SUCCESS)
	{
		printf("clGetDeviceIDs() for type GPU failed!\n");
		return 1;
	}
	printf("%d OpenCL devices found!\n", numdevs);

	char vendor[100];
	err = clGetDeviceInfo(device_ids[0], CL_DEVICE_VENDOR, sizeof(vendor), (char*)vendor, NULL);
	if(err != CL_SUCCESS)
	{
		printf("clGetDeviceInfo() failed!\n");
		return 1;
	}
	printf("Vendor: %s\n", vendor);

	cl_uint compute_units;
	err = clGetDeviceInfo(device_ids[0], CL_DEVICE_MAX_COMPUTE_UNITS, sizeof(compute_units), &compute_units, NULL);
	if(err != CL_SUCCESS)
	{
		printf("clGetDeviceInfo() failed!\n");
		return 1;
	}
	printf("Max compute units: %d\n", compute_units);
	return 0;
}