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Old 2010-12-11, 03:22   #9
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"Tim Sorbera"
Aug 2006
San Antonio, TX USA

426710 Posts

Originally Posted by ixfd64 View Post
OK, I re-enabled hyperthreading and added "AffinityScramble=0246" to local.txt. The time between screen outputs is now close to when I first ran Prime95. I still get spikes of over 100 seconds from time to time, but I guess it's better than the earlier average of 115!
Sounds like the suggestion helped. Not perfect, but better...
Originally Posted by ixfd64 View Post
By the way, is it a bad idea to run P-1 on all four worker windows? stage 2 you might get a big slow-down due to memory bandwidth. But then LL needs fast bandwidth too, just not as much storage, so it might be a non-issue. Plus, there's the fact that if you have X MB of RAM for Prime95, each worker can only get between X and X/4 MB of RAM, (closer to X/4 than X, usually) so the P-1 tests aren't as efficient as they could be. If you want to do it, and you first test it out to see how it works out, (like you're doing now - I just mean don't leave it on that 24/7 without seeing whether it works well or not) there's nothing wrong with doing P-1 on all four workers, but it's simplest to just put one worker on P-1 and the rest on other tasks.

Last fiddled with by Mini-Geek on 2010-12-11 at 03:27
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