Author: Uri Blass
Date: 02:42:42 04/29/01
Go up one level in this thread
On April 29, 2001 at 05:08:37, Chessfun wrote: >On April 29, 2001 at 04:01:32, Uri Blass wrote: > >>On April 29, 2001 at 03:39:53, Bruce Moreland wrote: >> >>>It seems clear why it wasn't invited to participate: >>> >>>1) The organizer is going to use a multiprocessor machine. >>>2) Fritz and Junior run on a multiprocessor machine. >>>3) Tiger is known to not run on such a machine. >>>4) Tiger is very strong, but if it is stronger than Junior or Fritz, it's >>>probably not stronger by much. >>>5) A multiprocessor machine should produce a significant performance boost. >>>6) It is hoped that the event will produce an "accurate" winner. >>> >>>If you allow these points, you can make a case that Tiger on a single processor >>>can't be stronger than Junior or Fritz on a multi. > >>I understood that tiger can use more than one processor. > > >I never understood that. I took it that one could be produced. > > >>I guess that Tiger could earn less than Fritz or Junior because of the fact that >>Christophe and Ed had not enough time to optimize tiger for more than one >>processor but it still can earn something from more than one processor. > > >Assuming they are within say 20 SSDF rating points of each other on >equal machines which seems likely. It seems highly unlikely without >proper debugging and testing that the above would be true. And an >event such as this IMO is not the place for that testing/debugging. I believe that testing debugging can be done in a few days if the target is only to be practically sure that it is better than the one processor version. You only need to test it in games to see that there is no problem and to test it in test position to see if the 2 processor version is faster than the one processor version. You only needs to give the parallel version to play to see if there are problems in games and few days are enough to get a enough games to be sure that bugs are not common and usually do not happen in games. I guess that these tests were done but I cannot know because I am not Ed or Christophe. > > >>I am interesting to know how much tiger earns from more than one processor. > > >I doubt at this time there is an answer for that. > > >>If there is a parallel version it is easy to compare both versions at least in >>test positions and to give an estimate how much is it faster on 2 processors. > > >You wrote above "I understood that tiger can use more than one processor." >Now you have changed this to "if". And IMO the same problem existed for Enrique. I understood it from Ed's post. "I understood it" does not mean that I am 100% sure about it and this is the reason for the words "if there is...". Uri
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