Author: Eugene Nalimov
Date: 11:00:26 08/06/99
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On August 06, 1999 at 09:04:16, Robert Hyatt wrote: >On August 06, 1999 at 05:33:51, Inmann Werner wrote: > >>Hello! >> >>I began to include your TBs yesterday in my program. >>Seems to work fine,although I am not full done (Crafty egtb.cpp with some >>changes. Hope Robert allows this, cause I do not want to write the full Probing >>code by myself! (If not, tell me and I put the stuff out) >> > > >this is Eugene's code, not mine. I just happened to be the first to use it. > >:) > > > > >>Question: >>Most of the stuff is for Locks and caching. >>Can there be problems, if in Winboard on one Computer, both use the TBs. Do they >>both get Caches or is it possible, the programs run out of Files, or "the winner >>takes it all"? >>Also, if one uses the TBs in the search, will the search slow down dramatically >>cause of the disk hits? Any experiences with it? >> >>Werner If program cannot open the TB file, it'll close all open TBs and then try again. So it must handle the case when limit on the # of open files is less than # of TBs. But I don't know what will happen with two programs on the same machine - I suspect that really "the winner will take it all". But if he'll try to open new TB, and it'll fail, he'll close all his TBs, too. So maybe there will be some form of a balance, with both programs sometimes unavailable to access some TBs. If you are using Windows, install NT. Eugene >1. the caches are separate, and both programs will have a bunch of files >open. I have no idea what the current windows limits are. Under Linux, >engine vs engine with all 220 tablebase files cause no problems at all. > >2. the search will definitely slow down in some positions. But remember that >you are getting perfect information from the table.. so in this case, slower >is better...
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