Friday, February 17, 2012

CUDA: Accessing pinned/pagelocked memory from different threads

Some time ago I asked the question here:

on how to access pinned or pagelocked memory from two threads in the same program.

The key is to allocate with the portable attribute.
Look at:
Nvidia Doxygen 4.0 cudaHostAlloc

for details.

Even more elegant is however, to register the memory only if you need it:
See details about  cudaHostRegister cudaHostRegister cudaHostUnregister at:
Nvidia Doxygen 4.0 cudaHostRegister

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