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Questions - memory-access

Memory padding vs coalesced access

I have a little confusion about bank conflicts, avoiding them using memory padding and coalesced memory access. What I've read so far: Coalesced memory access from global memory is optimal. If it isn'...
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SimonH

cuda

memory-access

bank-conflict

Votes: 0

Answers: 1

Latest Answer

Too long for a comment so I'm putting it here. Still not a complete answer though. By the time I found this post by Mark Harris which demonstrates the usage of shared memory to faciliate coalesced mem...
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SimonH

CUDA: Why memory transfers greater than 64KB are blocking calls?

I'm a CUDA learning student and I'm trying to understand how memory transfers work. I read on Internet that memory transfers greater than 64KB are treated as blocking calls, while memory transfers und...
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carpeug

performance

memory-management

cuda

blocking

memory-access

Votes: 0

Answers: 1

Latest Answer

Whether a call to cudaMemcpy or cudaMemcpyAsync is blocking or not is described in the CUDA API: https://docs.nvidia.com/cuda/cuda-runtime-api/api-sync-behavior.html#api-sync-behavior__memcpy-async Fo...
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