Is cudaFree() asynchronous?

Question

My question is just as the title. Actually, I am looking for a way to free device memory asynchronously.

Thanks!

Answer 1

cudaFree() is synchronous. If you really want it to be asynchronous, you can create your own CPU thread, give it a worker queue, and register cudaFree requests from your primary thread.

That said, asynchronous frees seem like an odd request. Perhaps you could explain why you'd like it to be asynchronous. Do you want the free to occur immediately after a CUDA event is triggered?