Author: Tom Kerrigan
Date: 00:26:35 02/21/03
Go up one level in this thread
On February 21, 2003 at 00:53:53, Robert Hyatt wrote: >On February 20, 2003 at 19:09:18, Tom Kerrigan wrote: > >>It seems you know a lot more than I do about instruction latencies. How do you >>explain Crafty's disproportionate speedup on IA-64, then? And why would you >>think Crafty's performance is a good predictor of other chess programs on IA-64 >>when Crafty is so much different from many other programs? > >This ought to be obvious. IA32 requires two or more operations to do all the >boolean stuff. IA64 requires just one. At the _same_ clock speed, that would >be a gain of 2x by itself for all the 64 bit stuff that is done. And 64 bit >stuff is _everywhere_. Move generation. Attack detection. Evaluation. SEE. >you name it. And it _has_ to speed up. Riiight, it ought to be obvious. Thanks for making my point, Bob. -Tom
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.