Author: Robert Hyatt
Date: 07:44:15 01/21/01
Go up one level in this thread
On January 21, 2001 at 06:27:57, David Rasmussen wrote: >On January 20, 2001 at 20:28:28, Robert Hyatt wrote: > >>On January 20, 2001 at 18:30:45, David Rasmussen wrote: >> >>>On January 20, 2001 at 10:34:47, Robert Hyatt wrote: >>> >>>>On January 20, 2001 at 02:38:57, Mark Longridge wrote: >>>> >>>>>Some of the programs, crafty and gandalf come to mind, let their clocks run down >>>>>pretty low (say as low as 30 seconds) near where the game would normally be >>>>>close to over. But if the other player is just shuffling wood back and forth and >>>>>is playing with an inc, that player can build up a huge time advantage. Crafty >>>>>tries too hard to avoid the 50 move rule, and all of a sudden it's got 25 >>>>>seconds left and a lost position. >>>>> >>>>>I bet a lot of GM's and some programs do this on purpose. I don't see why crafty >>>>>shouldn't go for the 50 move rule instead of a silly pawn push, especially when >>>>>it's time is so low. Now the silly draws are becoming silly losses. >>>> >>>>If I saw this happen I might be concerned. However, crafty does _not_ let the >>>>human get way ahead on time. It has specific code to prevent this by speeding >>>>up itself. And it _never_ loses on time, ever... >>>> >>>> >>> >>>I've seen you claim this before, but still, it has lost several times on time to >>>my program, playing 8 moves a second on the same machine through winboard. >> >> >>Then there is a big problem on your machine. To stress-test crafty, I play >>games with the time control 999 moves in 1 minute. The games go to 100-200 >>moves with _no_ time problem at all. >> >>I notice you said one machine. That's not a reasonable test. Make one > >I know, that could be the problem. > >>program's hash too big and that ends it... paging a program in and out >>is not going to work... >> > >Well, that's certainly not the problem because > >1. Both programs have little hashtable and overall memory consumption, about 10 >MB in all, and there is 192 MB of RAM > >2. There is no disk activity at all > >3. This is not Windows98 we're talking about. I've tried it on NT, Win 2000, >Solaris, and Linux, all with the same result. Maybe winboard is the problem. No. If you are seeing it lose 2 8 games on linux, you _definitely_ have something broken. I haven't seen Crafty lose a game on time in years, unless I accidentally break something while testing. In a 1 0 game it can _easily_ play over 1000 moves with no problem. I have seen it play 250+ move 2 0 and 3 0 games on ICC.
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