Author: John Merlino
Date: 08:50:37 03/15/04
Go up one level in this thread
On March 15, 2004 at 05:34:36, Harald Faber wrote: >On March 15, 2004 at 01:30:55, Kurt Utzinger wrote: > >>Hi John >>Comparing the results: >>CM9 vs Tao 5.6 (ponder=off) 13,5-6,5 >>CM9 vs Tao 5.6 (ponder=on) 15,0-5,0 >>we see (as usual) no significant difference as far as results are concerned >>whether playing with ponder on/off and that's why I do no longer see any >>reason to use two PC's for computer matches. True, the games are not the >>same but this "disadvantage" is overcompensated by the fact that you can >>play much more games with two computers. And in this way you have statistically >>spoken more reliable results. >>Kurt > >A) It is well-known that CM uses clearly more than 50% of the CPU. So when pb-on >and pb-off do not make any difference in CPU usage of about 90% by theKing, I do >not see why Tao could/should perform better with pb. WRONG! This has not been true for several years, since CM started supporting Winboard. Both engines got 50% of the CPU, which I verified several times during the match (although I already knew it was true). >B) Maybe Tao is not the right opponent -> much too weak IMO. > >C) Do you remember the good results of Ruffian without pb and the much worse >results WITH pb? So pb does not play a role? I wish it would not, but it *does*. >It is always best to have *physically seperated* systems so that none of the >programs/engines absolutely has no influence on the other one which IS likely >when they use the same CPU, RAM etc. I am amazed that you as experienced tester >don't understand that. Yes, it is probably always best to have this setup. However, logistically it is probably the worst setup because of the immense amount of human time that is necessary to complete even the shortest match. If I had had to make the moves for both computers for this statistically insignificant match, it would have taken me about 15 hours. jm
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