Author: David Rasmussen
Date: 10:03:47 01/21/01
Go up one level in this thread
On January 21, 2001 at 10:44:15, Robert Hyatt wrote: >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. 2 8 ? I said 8 moves a second, that is level 8 0:01 0 in winboard lingo. I don't believe that I have anything broken as I've tried this on at least 10 vastly different machines running different versions linux.
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