如何确定OpenCL中的可用设备内存? [英] How do I determine available device memory in OpenCL?

问题描述

我想知道在分配缓冲区之前设备上有多少可用内存.这可能吗?我知道有CL_DEVICE_GLOBAL_MEM_SIZE表示总内存，而CL_DEVICE_MAX_MEM_ALLOC_SIZE表示单个对象的最大大小，但是我想知道当前的内存状态.

I would like to know how much free memory there is on my device before allocating buffers. Is this possible? I know there's CL_DEVICE_GLOBAL_MEM_SIZE for total memory, and CL_DEVICE_MAX_MEM_ALLOC_SIZE for max size of a single object, but I would like to know the current memory state.

就目前情况而言，我可能不得不使用OpenGL供应商特定的扩展.

As it stands I'm probably going to have to use OpenGL vendor-specific extensions.

推荐答案

不，没有办法，也不需要知道，GPU内存可以虚拟化，驱动程序可以从GPU交换内存何时/不需要.

No, there is no way, and there is no need to know it, GPU memory can be virtualized and the driver will swap in/out memory from the GPU when it is/not needed.

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