Author: Aaron Gordon
Date: 20:13:48 09/04/02
Go up one level in this thread
On September 04, 2002 at 22:26:13, Robert Hyatt wrote: >On September 04, 2002 at 22:03:24, martin fierz wrote: > >>...or in the short version, 1.69 more nps for the 2-processor box. > > >Totals so far: > >dual xeon 1700mhz 1.84X raw NPS >quad xeon 700mhz 1.90X raw NPS (using only two processors) >dual AMD 1730mhz 1.67X raw NPS Hyatt, please shed some light on this for me. Here's something I've been noticing.. It appears the faster the chips involved the slower the speedup gets. It seems the older machines get a 1.8-1.9x speedup where as some of the newer machines (fast dual AMD's, some of the higher end dual P4's) get lower speedups. Is this due to memory bandwidth limitations perhaps? What are your thoughts on this? If anyone here has an older dual-amd box I'd appreciate you trying to run my CraftyK7SMP version 18.15 binary and checking it out.. Right now I only have an SSE version of the binary so anyone with a dual Tbird or pre-morgan Duron won't be able to run it (if you have such a system email me and I'll compile a binary asap). Sean Mintz, if you read the I'd appreciate it if you could run it for me on your dual 1.2MP's and post the results. You can grab the binary at http://speedycpu.dyndns.org/crafty/
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.