Author: Mike Byrne
Date: 16:15:08 02/16/03
Go up one level in this thread
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
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