Author: Jeremiah Penery
Date: 00:30:03 01/20/00
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On January 20, 2000 at 03:06:16, Dave Gomboc wrote: >[Repost, because apparently the link got trashed somehow.] > >Subject: Re: Compressing disk and chess programs perfomance >From: Dave Gomboc >E-mail: dave@cs.ualberta.ca >Message Number: 90155 >Date: January 19, 2000 at 23:21:54 > In Reply to: Compressing disk and chess programs perfomance > Message ID: 90145 > Posted by: Fernando Villegas > At: ferdinan@cmet.net > On: January 19, 2000 at 22:19:45 > >On January 19, 2000 at 22:19:45, Fernando Villegas wrote: > >>Hi: >>I am somewhat scarce of hard diks room and so tempted to compress. Anyone has >>experience about the effect in chess programs perfomance? >>fernando > >The newest tablebases are already compressed, and attempting to compress them >further won't really get you anywhere. If you use tablebases, you should leave >them on an uncompressed area. Other than that, a chess-playing program >shouldn't really be affected (reading in moves from an opening book should be >fast enough that it is irrelevant, unless your program is playing 200 moves per >minute on a chess server or something). Obviously, the performance of a chess >database program running on a compressed disk is a whole different story >(potentially an ugly one!) It may depend on the specific disk-compression you use. I can say that for native NTFS (WinNT) disk compression, there was no noticable impact on performance for any program. I had things like TBs (Edwards) compressed, and performance wasn't slowed at all. Before Nalimov compression, I had those compressed that way also, with no noticable performance hit. I think NTFS compression is a bit conservative, though, and if you use something else, performance might be a bit less. YMMV. :) Jeremiah
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