Author: Robert Hyatt
Date: 18:01:00 08/03/05
Go up one level in this thread
On August 03, 2005 at 15:18:11, Gian-Carlo Pascutto wrote: >On August 03, 2005 at 15:11:50, Robert Hyatt wrote: > >>On August 03, 2005 at 14:42:26, Gian-Carlo Pascutto wrote: >> >>>On August 03, 2005 at 13:34:09, Robert Hyatt wrote: >>> >>>>On August 03, 2005 at 10:21:20, Gian-Carlo Pascutto wrote: >>>> >>>>>On August 03, 2005 at 10:13:45, Sedat wrote: >>>>> >>>>>>Hi there, >>>>>> >>>>>>Does anybody has any information about this processor ? >>>>>> >>>>>>-Can i run engine-matches with ponder on ? >>>>>> >>>>>>I mean: >>>>>>-Does the kns of the engines will fall down ? >>>>>> >>>>>>And if its possible to run ponder on matches : >>>>>>-is it enough just one processor or i need to buy two processors ? >>>>> >>>>>A single dualcore processor behaves almost exactly like a 2 processor machine. >>>>> >>>>>-- >>>>>GCP >>>> >>>>This needs a _lot_ more testing before saying that so positively. I've been >>>>testing on a quad dual-core box, >>> >>>Whoa, the bloke was asking about a single dual core CPU, not about running on a >>>monster. >>> >>>-- >>>GCP >> >>I get the same results running on one... > >Meaning, you don't scale X2? > >I cannot reproduce that, Crafty works and scales fine here. > >vanilla Linux 2.6.12 kernel, NUMA aware. > >-- >GCP Correct. We are not yet certain whether it is a MB/Bios issue, a hardware issue, a memory issue, or what. I even tried the version from the WCCC last year where I still have the logs showing perfect X2, X3 and X4 scaling for 2, 3 and 4 processors (NPS obviously not speedup). But on the dual-core box I am playing with, things are wildly off. Next step is that AMD is going to drop in 4 single-core processors and I'm going to see if the x2/x3/x4 scaling comes back. If not, it isn't the processors, it is something with this bios/chipset/MB combo...
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