False Sharing in GPUs
Hi all:

Does false sharing problem exist in the GPU computing?

Thanks
malik
Hi all:



Does false sharing problem exist in the GPU computing?



Thanks

malik

#1
Posted 04/24/2012 06:38 PM   
False sharing is not a CPU or GPU problem, it's just a cache-related problem, so to be clear: YES, you could have false sharing on GPU.

Notice that many GPU use non-coherent L1 cache, and thus are not exposed to this problem, but instead to the problem of coherency when sharing data between SM or SMX or any logical sub-unit.
False sharing is not a CPU or GPU problem, it's just a cache-related problem, so to be clear: YES, you could have false sharing on GPU.



Notice that many GPU use non-coherent L1 cache, and thus are not exposed to this problem, but instead to the problem of coherency when sharing data between SM or SMX or any logical sub-unit.

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#2
Posted 04/24/2012 07:19 PM   
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