从 OpenCL 中获得的设备列表中确定主机 CPU? [英] Determine host CPU from list of devices obtained in OpenCL?

问题描述

我通过传递一个 cl_device_id 数组并获取所有可能的设备来调用 clGetDeviceIDs.现在从这个列表中我想删除实际上是主机 CPU 的设备?有没有傻瓜证明方法来做到这一点?因为可能安装了 2 个完全相同的 CPU，那么 cl_device_info 可能无法区分 2 个 CPU?

I am calling clGetDeviceIDs by passing an array of cl_device_id and getting all possible devices. Now from this list I want to remove the device which is actually the host CPU? Is there any fool proof way to do this? Because there might be 2 exactly identical CPU installed then cl_device_info might not be helpful in differentiating the 2 CPU?

推荐答案

在 OpenCL 1.1 及更高版本中，您可以使用 CL_DEVICE_HOST_UNIFIED_MEMORY 和 clGetDeviceInfo.

In OpenCL 1.1 and later, you can check if the device and the host have a unified memory subsystem by using CL_DEVICE_HOST_UNIFIED_MEMORY with clGetDeviceInfo.

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