Author: Vincent Diepeveen
Date: 05:47:24 03/05/04
Go up one level in this thread
On March 04, 2004 at 13:28:53, Keith Evans wrote: >On March 04, 2004 at 12:42:24, Vincent Diepeveen wrote: > >>On March 04, 2004 at 09:44:00, Bryan Hofmann wrote: >> >>>On March 03, 2004 at 21:29:39, David B wrote: >>> >>>>I have a Tyan 2885 currently not sure if its a bios setting or just an OS >>>>setting within Windows 2003 Enterprise Edition though its supposed to support >>>>numa which to the life of me I can not get it to do. Each processor currently >>>>is running 1gig of ram with Opteron 244's >>>> >>>>Thanks >>> >>>I recommend reading the following; >>> >>>http://www.tyan.com/support/html/f_s2885.html >> >>David, >> >>Except for DIEP which has NUMA versions, and SOS which is multiprocessing too, >>but heavily relying upon shared memory, which program do you plan to run that >>profits from a NUMA machine setup? >> >>Nevertheless in your manual from your tyan mainboard you can find how to get >>numa to work. If i remember well the best thing to do is just fill up all memory >>banks with memory. That's the best way to do it always. > >I understand that Crafty supports NUMA under Windows. All crafty does do is put a thread to a specific cpu. Though that is important condition to run NUMA, it doesn't mean that all other stuff you need for NUMA gets used. It's multithreading of course, so it's completely SMP in that respect. I've already explained it a dozen times here. Bob just claims it's NUMA, but he has not even written the code himself, so he doesn't even know what he talks about. I claim the dual opteron platform to be a better SMP platform than dual P4 Xeon or dual K7. That it is NUMA too is just good for those who support NUMA. Crafty in itself will NOT run at NUMA hardware like Origin3800 or Altix3000. There NUMA means the random latency from this processors memory to other processors memory is *significant* slower than that of the SMP machines. So crafty is not NUMA at all. It doesn't run on NUMA machines other than the only NUMA machine where SMP is faster than SMP at others. Best regards, Vincent
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