Author: Brian Richardson
Date: 15:14:02 03/18/03
Go up one level in this thread
On March 18, 2003 at 18:09:52, Robert Hyatt wrote: >On March 18, 2003 at 17:47:49, Tom Kerrigan wrote: > >>On March 18, 2003 at 16:57:17, Brian Richardson wrote: >> >>>I have a dual Itanium2 1GHz system. Perhaps you forgot my earlier post. >>>With the optimizing compilers (tried both Intel and Microsoft), it runs >>>Tinker at about 2GHz Pentium speed (x86 binary code at only 30%). >>> >>>Has anyone been able to reproduce your (Eugene's?) results showing MUCH faster >>>Itanium2 performance? >> >>*sigh* Like I've always said, Crafty is not your typical chess program. >> >>-Tom > > >There we agree. Itanium is all about moving data around in large quantities. >32 bit programs won't necessarily benefit at all, and may well be a lot slower >in fact... > >However, this is also true of many other machines. Many folks drop their >favorite >program on a Cray expecting blinding performance and don't get it, because they >can't >use the vector hardware. Of course, I ran both Crafty and Tinker (also bitboard based). The results were the same. I even tried a small hash table size to fit all of Tinker in the 3MB cache...it sped things up about 10%, but still way below fast 32bit Intel and AMD CPUs.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.