Author: Robert Hyatt
Date: 18:26:48 02/16/03
Go up one level in this thread
On February 16, 2003 at 19:15:08, Mike Byrne wrote: >On February 16, 2003 at 19:12:24, Robert Hyatt wrote: > >>On February 16, 2003 at 18:17:32, Jeremiah Penery wrote: >> >>>On February 16, 2003 at 16:50:48, Brian Richardson wrote: >>> >>>>I have been running some informal Itanium2 tests with Tinker and Crafty (18.15). >>>>The results are not encouraging. I know Bob Hyatt has posted better numbers >for >>> >>>Every piece of data I've seen contradicts Bob's claim. As a wild guess, I might >>>say he saw multi-CPU numbers that either got reported as single-CPU, or someone >>>just assumed they were single-CPU numbers. However, I haven't actually seen the >>>numbers Bob saw - there is some chance that what he reported is accurate. >> >> >>Eugene supplied some of the numbers. Someone inside intel supplied others. >>Since, as I have said, I have never had my hands on one of these things, I >>don't have any test results that I can publish as "run by me" as I can post >>for my various hardware choices I do have access to. >> >>However, the alpha numbers in SPEC are way below the numbers that I _do_ have >>logs for for a 21264 at 600mhz: >> >>total positions searched.......... 300 >>number right...................... 300 >>number wrong...................... 0 >>percentage right.................. 100 >>percentage wrong.................. 0 >>total nodes searched.............. 236973211.0 >>average search depth.............. 4.5 >>nodes per second.................. 783641 >> >>That was one cpu. The next is for a dual 21264 at 600mhz: >> >>total positions searched.......... 300 >>number right...................... 300 >>number wrong...................... 0 >>percentage right.................. 100 >>percentage wrong.................. 0 >>total nodes searched.............. 330905102.0 >>average search depth.............. 4.5 >>nodes per second.................. 1266767 >> >> >>This version was _prior_ to our "lockless hash algorithm" which made the >>SMP scaling much better on the alpha, in terms of raw NPS... >> >>The above I can produce the log files for, for anyone interested in seeing >>the results for all 300 wac positions... > > >Bob, > > >Just curious - what time control did you use on this? > >Thanks > >Michael 60 seconds per position. Version was 16.18... Bob
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