Raul SDT Posted June 1, 2012 Share Posted June 1, 2012 Damn...40 westmeres... Why is HT of ? Quote Link to comment Share on other sites More sharing options...
Dead Things Posted June 6, 2012 Share Posted June 6, 2012 Good question. Long answer. Apologies in advance. Windows uses something called "processor groups" to accommodate systems with more than 64 logical processors. With 80 logical processors, the system would be divided into two processor groups comprised of 40 logical processors each. You can manually edit the BCD to change the processor group membership characteristics, but one thing that cannot be changed is the 64-processor ceiling per group. While this processors group implementation works for parallelized tasks, it does not work for symmetric tasks meaning that you're essentially limited to 64 cores in Windows for any one particular process. Because UCBench is actually really well-coded, each thread does not leave much processing headroom for hyperthreading, so it benefits way less from HT than, say, wPrime. As such, my score with 32 cores enabled and HT on was way lower than my score with all 40 enabled and HT off. I had some hope that Server 8 would do away with the clumsy processor group implementation, but that was not the case last time I checked. By comparison, Ubuntu has supported >64 threads per symmetric task since 10.04. Quote Link to comment Share on other sites More sharing options...
Hyperhorn Posted June 6, 2012 Share Posted June 6, 2012 That's some nice raw CPU power! I guess you use this setup for F@H normally, right? Quote Link to comment Share on other sites More sharing options...
Dead Things Posted June 12, 2012 Share Posted June 12, 2012 You betcha! Quote Link to comment Share on other sites More sharing options...
Hondacity Posted June 12, 2012 Share Posted June 12, 2012 that score is crazy. more more mroe Quote Link to comment Share on other sites More sharing options...
BuizelON Posted July 10, 2012 Share Posted July 10, 2012 *drool* What motherboard did you use for this submission? Quote Link to comment Share on other sites More sharing options...
Amir-Az-Iran-Busheher Posted December 24, 2012 Share Posted December 24, 2012 wooooow nice nice you undie Quote Link to comment Share on other sites More sharing options...
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