我可以访问运行Debian 7的系统，并安装了两张Nvidia Tesla卡。我想使用OpenCL做一些基准测试。但是，OpenCL无法找到任何兼容的平台。我是否需要任何其他库或特殊驱动程序才能使用OpenCL？
以下示例代码显示未找到任何平台：
#include <stdio.h>
#include <stdlib.h>
#ifdef __APPLE__
#include <OpenCL/opencl.h>
#else
#include <CL/cl.h>
#endif
int main() {
int i, j;
char* info;
size_t infoSize;
cl_uint platformCount;
cl_platform_id *platforms;
const char* attributeNames[5] = { "Name", "Vendor",
"Version", "Profile", "Extensions" };
const cl_platform_info attributeTypes[5] = { CL_PLATFORM_NAME, CL_PLATFORM_VENDOR,
CL_PLATFORM_VERSION, CL_PLATFORM_PROFILE, CL_PLATFORM_EXTENSIONS };
const int attributeCount = sizeof(attributeNames) / sizeof(char*);
// get platform count
clGetPlatformIDs(5, NULL, &platformCount);
// get all platforms
platforms = (cl_platform_id*) malloc(sizeof(cl_platform_id) * platformCount);
clGetPlatformIDs(platformCount, platforms, NULL);
printf("Platform count: %d\n",platformCount);
// for each platform print all attributes
for (i = 0; i < platformCount; i++) {
printf("n %d. Platform n", i+1);
for (j = 0; j < attributeCount; j++) {
// get platform attribute value size
clGetPlatformInfo(platforms[i], attributeTypes[j], 0, NULL, &infoSize);
info = (char*) malloc(infoSize);
// get platform attribute value
clGetPlatformInfo(platforms[i], attributeTypes[j], infoSize, info, NULL);
printf(" %d.%d %-11s: %sn", i+1, j+1, attributeNames[j], info);
free(info);
}
printf("n");
}
free(platforms);
return 0;
}
我用来编译代码的命令：
gcc platforms.c -lOpenCL
如果我运行代码，则输出为：
Platform count: 0