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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <CL/cl.h>
#define SUPPORTED_PLATFORMS 4
#define SUPPORTED_DEVICES 16
#define MAX_PARAM_SIZE 1024
int main() {
cl_int err;
cl_int i, j, k;
cl_uint dim;
cl_uint num_platforms;
cl_platform_id platforms[SUPPORTED_PLATFORMS];
cl_uint num_devices;
cl_device_id devices[SUPPORTED_DEVICES];
char param[MAX_PARAM_SIZE];
err = clGetPlatformIDs(SUPPORTED_PLATFORMS, platforms, &num_platforms);
if (err != CL_SUCCESS) {
printf("Can't identify platforms");
exit(0);
}
for (i = 0; i < num_platforms; i++) {
err = clGetPlatformInfo (platforms[i], CL_PLATFORM_NAME, sizeof(param), param, NULL);
if (err != CL_SUCCESS) {
puts("Unidentified platform");
continue;
} else printf("Platform: %s", param);
err = clGetPlatformInfo (platforms[i], CL_PLATFORM_VERSION, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(", Version: %s", param);
}
err = clGetPlatformInfo (platforms[i], CL_PLATFORM_PROFILE, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(", Profile: %s", param);
}
printf("\n");
err = clGetDeviceIDs (platforms[i], CL_DEVICE_TYPE_ALL, SUPPORTED_DEVICES, devices, &num_devices);
if (err != CL_SUCCESS) {
puts(" Device enumeration failed");
continue;
}
for (j = 0; j < num_devices; j++) {
err = clGetDeviceInfo(devices[j], CL_DEVICE_TYPE, sizeof(param), param, NULL);
if (err != CL_SUCCESS) {
puts(" Unknown device");
continue;
}
switch (*param&(CL_DEVICE_TYPE_CPU|CL_DEVICE_TYPE_GPU|CL_DEVICE_TYPE_ACCELERATOR)) {
case CL_DEVICE_TYPE_CPU:
printf(" CPU");
break;
case CL_DEVICE_TYPE_GPU:
printf(" GPU");
break;
case CL_DEVICE_TYPE_ACCELERATOR:
printf(" ACCELERATOR");
break;
}
if ((*param)&CL_DEVICE_TYPE_DEFAULT) printf(" (*)");
err = clGetDeviceInfo(devices[j], CL_DEVICE_NAME, sizeof(param), param, NULL);
if (err != CL_SUCCESS) {
puts(" Unknown device");
continue;
} else {
printf(" %s", param);
}
err = clGetDeviceInfo(devices[j], CL_DEVICE_MAX_CLOCK_FREQUENCY, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(", %u MHZ", *(cl_uint*)param);
}
err = clGetDeviceInfo(devices[j], CL_DEVICE_ERROR_CORRECTION_SUPPORT, sizeof(param), param, NULL);
if ((err == CL_SUCCESS)&&(*(cl_bool*)param)) {
printf(", ECC");
}
printf("\n");
err = clGetDeviceInfo(devices[j], CL_DEVICE_GLOBAL_MEM_SIZE, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(" Global Memory: %u MB\n", (*(cl_ulong*)param)/1024/1024);
}
err = clGetDeviceInfo(devices[j], CL_DEVICE_MAX_MEM_ALLOC_SIZE, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(" Maximum Allocation: %u MB\n", (*(cl_ulong*)param)/1024/1024);
}
err = clGetDeviceInfo(devices[j], CL_DEVICE_MIN_DATA_TYPE_ALIGN_SIZE, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(" Sufficient Alignment: %u\n", (*(cl_uint*)param));
}
err = clGetDeviceInfo(devices[j], CL_DEVICE_LOCAL_MEM_TYPE, sizeof(param), param, NULL);
if ((err == CL_SUCCESS)&&(*(cl_device_local_mem_type*)param == CL_LOCAL)) {
printf(" Local Memory");
err = clGetDeviceInfo(devices[j], CL_DEVICE_LOCAL_MEM_SIZE, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(": %u KB", (*(cl_ulong*)param)/1024);
}
printf("\n");
}
printf(" Constant Memory: ");
err = clGetDeviceInfo(devices[j], CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf("%u KB", *(((cl_ulong*)param))/1024);
}
err = clGetDeviceInfo(devices[j], CL_DEVICE_MAX_CONSTANT_ARGS, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(" %u parameters max", *(((cl_uint*)param)));
}
printf("\n");
err = clGetDeviceInfo(devices[j], CL_DEVICE_ENDIAN_LITTLE, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(" Endianess: %s\n", (*(cl_bool*)param)?"Little":"Big");
}
err = clGetDeviceInfo(devices[j], CL_DRIVER_VERSION, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(" Driver Version: %s\n", param);
}
err = clGetDeviceInfo(devices[j], CL_DEVICE_VERSION, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(" OpenCL Version: %s\n", param);
}
err = clGetDeviceInfo(devices[j], CL_DEVICE_MAX_COMPUTE_UNITS, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(" Compute Units: %u\n", *(cl_uint*)param);
}
err = clGetDeviceInfo(devices[j], CL_DEVICE_ADDRESS_BITS, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(" Maximum Work-items: 2^%u (global, in one dimmension)\n", *(cl_uint*)param);
}
err = clGetDeviceInfo(devices[j], CL_DEVICE_MAX_WORK_GROUP_SIZE, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(" Group Size: %u\n", *(size_t*)param);
}
err = clGetDeviceInfo(devices[j], CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
dim = *(cl_uint*)param;
err = clGetDeviceInfo(devices[j], CL_DEVICE_MAX_WORK_ITEM_SIZES, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(" Dimensions: ");
for (k = 0; k < dim; k++) {
if (k) printf(", ");
printf("%u", *(((size_t*)param)+k));
}
printf("\n");
}
}
err = clGetDeviceInfo(devices[j], CL_DEVICE_EXTENSIONS, sizeof(param), param, NULL);
if (err == CL_SUCCESS) {
printf(" Double Support: ");
if (strstr(param, "cl_khr_fp64"))
printf("Yes");
else
printf("No");
printf("\n");
// printf(" Extensions: %s\n", param);
} else {
printf(" Double Support: No\n");
}
}
}
return 0;
}
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