我已经建立了一个用于编写 OpenCL 程序的 IvyBridge 平台。我的系统是win7 64位,VS2010作为开发工具。我的电脑上有一个带有 nVidia GTX560 的 i7-3770k。当我查询我系统的设备时,我找不到HD4000。我已使用以下网页检查了 HD4000 的系统驱动程序:http: //www.intel.com/p/en_US/support/detect/graphics。该报告称“当前驱动程序已安装 8.15.10.2696”。OpenCL SDK 是用于 OpenCL Application 2012 windows 64 位的最新英特尔 SDK,从http://software.intel.com/en-us/articles/vcsource-tools-opencl-sdk/下载。以下是我的代码和输出。
我还注意到CPU的设备名称很奇怪。顺便说一句,我已经将 HD4000 设备连接到显示器,因为我发现有人遇到了无法创建 CL 上下文的问题。现在我发现在我们将显示器连接到 HD4000 后,GPU-Z 工具可以检测到 HD4000。所以有人可以帮我解决这个问题吗?
#include "stdafx.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <CL/cl.h>
int _tmain(int argc, _TCHAR* argv[])
{
cl_platform_id *platforms;
cl_uint num_platforms;
cl_device_id *devices_cpu, *devices_gpu;
cl_uint num_devices;
char dev_name[40], dev_vendor[40], dev_version[40], dev_profile[40];
char plt_name[40], plt_vendor[40], plt_version[40], plt_profile[40];
clGetPlatformIDs(1, NULL, &num_platforms);
platforms = (cl_platform_id*) malloc(sizeof(cl_platform_id) * num_platforms);
clGetPlatformIDs(num_platforms, platforms, NULL);
for(int i = num_platforms - 1; i >= 0; i--)
{
clGetPlatformInfo(platforms[i], CL_PLATFORM_NAME, sizeof(plt_name),&plt_name,NULL);
clGetPlatformInfo(platforms[i], CL_PLATFORM_VENDOR, sizeof(plt_vendor),&plt_vendor,NULL);
clGetPlatformInfo(platforms[i], CL_PLATFORM_VERSION, sizeof(plt_version),&plt_version,NULL);
clGetPlatformInfo(platforms[i], CL_PLATFORM_PROFILE, sizeof(plt_profile),&plt_profile,NULL);
printf("\n\n\nPlatform #%d Info: \n\n", i);
printf("Platform: %s \n", plt_name);
printf("Vendor: %s \n", plt_vendor);
printf("Version: %s \n", plt_version);
printf("Profile: %s \n", plt_profile);
clGetDeviceIDs(platforms[i],CL_DEVICE_TYPE_CPU, 1, NULL, &num_devices);
devices_cpu = (cl_device_id *)malloc(sizeof(cl_device_id) * num_devices);
clGetDeviceIDs(platforms[i], CL_DEVICE_TYPE_CPU, num_devices, devices_cpu, NULL);
for(int j = 0 ; j < num_devices; j++)
{
clGetDeviceInfo(devices_cpu[j], CL_DEVICE_NAME, sizeof(dev_name), &dev_name, NULL);
clGetDeviceInfo(devices_cpu[j], CL_DEVICE_VENDOR, sizeof(dev_vendor), &dev_vendor, NULL);
clGetDeviceInfo(devices_cpu[j], CL_DEVICE_VERSION, sizeof(dev_version), &dev_version, NULL);
clGetDeviceInfo(devices_cpu[j], CL_DEVICE_PROFILE, sizeof(dev_profile), &dev_profile, NULL);
printf("\n\n\nCPU Device Info: \n\n");
printf("Name: %s \n", dev_name);
printf("Vendor: %s \n", dev_vendor);
printf("Version: %s \n", dev_version);
printf("Profile: %s \n", dev_profile);
}
clGetDeviceIDs(platforms[i],CL_DEVICE_TYPE_GPU, 1, NULL, &num_devices);
devices_gpu = (cl_device_id *)malloc(sizeof(cl_device_id) * num_devices);
clGetDeviceIDs(platforms[i],CL_DEVICE_TYPE_GPU, num_devices, devices_gpu, NULL);
for(int j = 0; j < num_devices; j++)
{
clGetDeviceInfo(devices_gpu[j], CL_DEVICE_NAME, sizeof(dev_name), &dev_name, NULL);
clGetDeviceInfo(devices_gpu[j], CL_DEVICE_VENDOR, sizeof(dev_vendor), &dev_vendor, NULL);
clGetDeviceInfo(devices_gpu[j], CL_DEVICE_VERSION, sizeof(dev_version), &dev_version, NULL);
clGetDeviceInfo(devices_gpu[j], CL_DEVICE_PROFILE, sizeof(dev_profile), &dev_profile, NULL);
printf("\n\n\nGPU Device Info: \n\n");
printf("Platform: %s \n", dev_name);
printf("Vendor: %s \n", dev_vendor);
printf("Version: %s \n", dev_version);
printf("Profile: %s \n", dev_profile);
}
free((void*)devices_cpu);
free((void*)devices_gpu);
}
return 0;
}
输出:
平台 #1 信息: 平台:英特尔(R) OpenCL 供应商:英特尔(R) Corporation 版本:OpenCL 1.1 个人资料:FULL_PROFILE CPU设备信息: 名称: ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ 供应商:英特尔(R) Corporation 版本:OpenCL 1.1(内部版本 31360.31441) 个人资料:FULL_PROFILE 平台 #0 信息: 平台:NVIDIA CUDA 供应商:英伟达公司 版本:OpenCL 1.1 CUDA 4.2.1 个人资料:FULL_PROFILE GPU设备信息: 平台:GeForce GTX 560 Ti 供应商:英伟达公司 版本:OpenCL 1.1 CUDA 个人资料:FULL_PROFILE