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Where is this place located?
on Jan 5, 2008 10:33 AM by enpsuedo
Multi thread performance hit
Jan 5, 2008 10:33 AM
More threads=Slower performance
Relatively new to MP. Here's the issue.
When running more than 1 thread (inc main thread) there is a x3 factor of slowness compared with sequential. Some sort of conflict is occuring.
affinity to cpu 0
affinity to cpu 1
All variables are local to each thread.
Is there some sort of thrashing that occurs due to swapout between timeslices?
Is this normal?
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