Question

我已经建立了一个用于编码OpenCL程序的IvyBridge平台。我的系统是win7 64位，VS2010作为开发工具。在我的电脑上有一个带有nVidia GTX560的i7-3770k。当我查询我的系统设备时，我找不到HD4000。我已使用此网页检查了我的HD4000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是从http://software.intel.com/en-us/articles/vcsource-tools-opencl-sdk/下载的最新英特尔SDK for OpenCL Application 2012 Windows 64位。以下是我的代码和输出。

我也注意到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。现在我发现在将显示器连接到HD4000之后，可以通过GPU-Z工具检测到HD4000。所以任何人都可以帮我解决这个问题？

#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：

Platform #1 Info: 
Platform: Intel(R) OpenCL 
Vendor: Intel(R) Corporation 
Version: OpenCL 1.1 
Profile: FULL_PROFILE 
CPU Device Info: 
Name: ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌIntel(R) Corporation 
Vendor: Intel(R) Corporation 
Version: OpenCL 1.1 (Build 31360.31441) 
Profile: FULL_PROFILE 
Platform #0 Info: 
Platform: NVIDIA CUDA 
Vendor: NVIDIA Corporation 
Version: OpenCL 1.1 CUDA 4.2.1 
Profile: FULL_PROFILE 
GPU Device Info: 
Platform: GeForce GTX 560 Ti 
Vendor: NVIDIA Corporation 
Version: OpenCL 1.1 CUDA 
Profile: FULL_PROFILE

Answer 1

如果没有连接到卡的显示器，OpenCL在HD4000上不起作用。这是我自己在英特尔论坛上的测试和答案。

在英特尔论坛上查看以下主题：1 2 3。

OpenCL SDK无法找到Ivy桥的IGP

1 个答案: