DriverAPI: How to set the data to an pinned memory.

Accelerated Computing CUDA CUDA Programming and Performance
1

Hallo,

in the documentation it says that you can allocate pinned memory with cuMemAllocHost.
To copy data you should use the cuMemcpy method to copy unpinned data to the pinned memory, but I cannot find such a method.

Is it possible to use the regular methods, like memcpy or memset or is it better to use the CUDA methods?

Thanks
Martin

2

You can modify pinned memory however you’d like, with memcpy, memset, or standard C. Pinned memory is a memory region locked to a particular physical region so the card can DMA safely; it can’t be paged out by the OS, so don’t try to allocate all of your RAM as pinned.