Author: Keith Evans
Date: 09:08:37 12/18/03
Go up one level in this thread
On December 18, 2003 at 00:10:01, Albert Bertilsson wrote: >On December 17, 2003 at 18:34:54, Keith Evans wrote: > >>On December 17, 2003 at 16:01:06, Slater Wold wrote: >> >>>On December 17, 2003 at 15:40:07, Mathieu Pagé wrote: >>> >>>>Just for fun i calculated the nodes/secondes for the last 24 hours >>>> >>>>and it is: 4450300925 nodes /seconds >>>>or : 4450 millions nodes / seconds >>>>or : 4,5 giga nodes / seconds >>>> >>>>This system is faster than my own chess engine by a factor of 1:4450 >>>> >>>>I think it's an all time record for a perft. >>>> >>>>impressive, isn't it ? >>>> >>>>Thanks Albert to privide us with this fun project (not usefull, but fun :) >>>> >>>>let's compute guys. >>>> >>>>Mathieu >>> >>>And Bob thinks his quad opteron is fast! Pftt! >>> >>>4.5B NPS. Imagine that chess engine... >> >>All Bob needs to do to boost this dramatically is to change how he counts nodes. >> >>My understanding is that the nps given for the distributed perft project counts >>all of the nodes that would have been visited if hash tables were not used. But >>then hash tables are used, so not all of the nodes are actually visited. Is this >>understanding correct? >> >>-Keith > >You're right Keith, some considerable cheating is done by using hash tables to >"boost" node counting. But even without it I still think that the project would >reach VERY high node counts, perhaps almost 1BNPS (when testing at home I solve >problems twice as fast with hash tables so perhaps even 2BNPS are counted by the >computers). > >/Regards Albert Well I wouldn't call it cheating, just being efficient. People just need to know what was done if they want to compare the numbers to something different. Anyways it's an interesting project. It looks like it's very easy for most people to participate, unfortunately my "big iron" runs linux. Do you know if CAP does something similar, or do they require more manual intervention? -Keith
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.