Author: Johan de Koning
Date: 22:58:31 03/21/04
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On March 21, 2004 at 19:16:42, John Merlino wrote: >On March 21, 2004 at 18:50:44, Jason Kent wrote: > >>>How much hash table space are you having the mentor engines allocate? My P4-2.4 >>>took quite a bit longer with 64MB of space. >>> >>>jm >> >>Is it possible to use more than 64MB hash? if so, whats the max? i usually see >>people using 32 or 64 mb. > >I believe that Johan said that the theoretical max for hash space for The King >is 2GB. The GUI, however, will artificially limit the amount that you can >allocate based on your computer's physical RAM. Ouch, I think I may have said that (privately) some years ago. The code however reveals that 2G-1 is the limit (signed 32 bit). If some Windows version supports more then 2GB *and* if the CM GUI picks it up correctly and allows 2GB TT, the engine will commit suicide. But I know neither of these 2 conditions. >Of course, if you're running The King outside the CM GUI, you might be able to >feed any number you want to The King. I don't know if Johan does any reality >check inside the engine (although I would suspect that he does). No checks whatsoever, except for that 2G. :-) But the seasoned CC'er of course knows the importance of monitoring free RAM, swapfile, disk light, and nodes/second. One trick I use myself on occasion is to run a dummy analysis just before starting a benchmark or a game. That forces all useless stuff (e.g. disk cache) out of RAM, and allows the next run to start on a clean slate. ... Johan
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