hi,
After calling “clEnqueueNDRangeKernel” are the caches flushed? From my initial observation it seems on GPU L1 is flushed but L2 is not flushed. Am I correct? what happens in case of cpu?
Thanks.
hi,
After calling “clEnqueueNDRangeKernel” are the caches flushed? From my initial observation it seems on GPU L1 is flushed but L2 is not flushed. Am I correct? what happens in case of cpu?
Thanks.
That is entirely a function of the specific hardware and driver you’re using. Firstly, it has no effect on correctness - caches are an implementation detail that are invisible apart from their effect on performance.
If you’re asking about it from a performance/tuning point of view, you’ll need to consult the documentation for whichever piece of hardware you’re using, assuming it is even documented. It might not even be a simple answer - it could depend on things like what types of memory are being used, whether the memory has been mapped etc.