Author: Robert Hyatt
Date: 20:39:26 09/27/02
Go up one level in this thread
On September 27, 2002 at 12:11:03, Vincent Diepeveen wrote: >On September 26, 2002 at 15:11:23, Robert Hyatt wrote: > >>On September 26, 2002 at 12:28:16, Aaron Gordon wrote: >> >>>On September 26, 2002 at 11:16:06, Robert Hyatt wrote: >>>>> 93.5 seconds base run time >>>> >>>>Yes... But the Intel duals are blowing the AMD duals out of the >>>>water, totally.. >>>> >>>>AMD appears to win the "single cpu war" at the moment. But on the >>>>duals (and beyond) they are _way_ behind intel's performance. >>> >>> >>>Where exactly are you seeing the dual AMD's being "_way_" behind Intel's >>>dual P4 systems? Slates dual XP 1.73(2100+) gets 1.69 million nodes/sec in >>>Crafty v18.11. A single 2.5GHz AthlonXP gets almost 1.6 million nodes/second. >>>With the 2800+ being announced on October 1st and the Iwill MPX2 as cheap as it >>>is someone could make a dual AthlonXP 2800+ box quite easily provided they take >>>the 5 minutes to unlock the cpus. >>> >>>Show me some numbers Hyatt. :) >> >>Several have posted dual AMD numbers. The relevant detail is this: >> >>run crafty with one cpu on an AMD box and record the NPS. Then run it >>using two cpus and record the NPS. On an AMD box, the dual cpu speed >>will be around 1.4X faster than the single cpu speed. on an Intel box, >>this ratio is 1.9X. Which is a _significant_ difference. IE with Crafty, >>a dual intel gets 1.9x as much computing power (I am not talking parallel >>search speedup here, only raw NPS numbers to compare computer horsepower) >>while a dual AMD gets 1.4X... >> >>Eugene posted several such numbers here. Vincent reported 1.4X on his >>dual AMD. At mhz for mhz, AMD is generally faster, using one cpu. But >>when you factor in that 1.4X vs 1.9X for duals, the Intel processor catches >>up in a big hurry when using more than one cpu... > >depends upon how well a program is written obviously. Perhaps the "better" written program runs faster on intel hardware? > >>Wasn't my results that were posted, I just noticed them. >> >>Others replied to that thread as well and AMD was always behind...
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.