Author: Robert Hyatt
Date: 18:57:27 04/11/00
Go up one level in this thread
On April 11, 2000 at 12:25:31, Jason Williamson wrote: >On April 10, 2000 at 20:28:50, Robert Hyatt wrote: > >>On April 10, 2000 at 10:00:40, Stefan Meyer-Kahlen wrote: >> >>>On April 10, 2000 at 09:00:39, Robert Hyatt wrote: >>> >>>>On April 10, 2000 at 06:10:22, Jouni Uski wrote: >>>> >>>>>Has anybody found good values for TB cache with 3+4 piece tablebases and 5 piece >>>>>set (compressed Nalimov of course)? Is it different? Or is 4 MB always enough? >>>>>Is same value good under Fritz and Winboard? thanks >>>>> >>>>>Jouni >>>> >>>> >>>>Here is what I do on a machine with decent memory, assuming I am playing in >>>>a tournament that is playing long time controls: >>>> >>>>memory=512mb >>>> >>>>hash=384M >>>>hashp=32M >>>>cache=32M >>>> >>>>which leaves 64M for the O/S and filecache buffers. >>>> >>>>works well for me. In general, egtb cache is only important in egtb positions, >>>>but then it is very important for performance. >>> >>>I haven't seen much difference for Shredder if I set the tb cache to 1 or 32 or >>>256 MB. Any comments? >>> >>>Stefan >> >> >>Depends on the position... I ran several tests last year when Eugene first got >>this stuff going, and I decided that for ICC level time controls, 32mb was a >>good number. I rarely see my NPS drop drastically. It all depends on the >>position and how many different databases are getting probed... > >when does crafty claim the ram for the cache? At prgram inception or when its >first used? If its the later, one has to be careful that crafty doesn't swap >itself out. This can bite you, as it doesn't claim the memory until it actually starts doing reads from the tablebases. So if you barely fit in memory at the start of the game, tablebase probes will start you to paging... like mad...
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.