Author: Tony Werten
Date: 00:28:18 09/15/01
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On September 14, 2001 at 22:56:06, Pham Minh Tri wrote: >I see that dual computers are expensive, not easy to own and still limited in >power of computing. > >I wonder how good / possible if we use all computers in a LAN for chess >computing. LANs are very popular and the numbers of computers could be hundreds. >Even though a LAN is not effective as a dual circuit, but the bigger number of >processors could help and break the limit. > >What do you think? When you search a chesstree, a lot of times you come into parts of tree that you have searched before. You either don't want to search this part again ( you have searched it deep enough before ) or you want to have the best move from the previous search. Hashtables do exactly this. In a LAN (or a cluster) you don't share this hashtable and therefor are searching the same tree (or parts of it ) time and time again. If you count the number of nodes searched per second it's a linear speedup but effectively it's useless. You have to add a lot of computers before you get any real speedup, specially in the endgame. cheers, Tony
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