Author: Slater Wold
Date: 23:27:24 10/22/02
Go up one level in this thread
On October 22, 2002 at 20:00:23, Robert Hyatt wrote: >On October 22, 2002 at 18:51:19, Slater Wold wrote: > >>On October 22, 2002 at 18:35:25, Dann Corbit wrote: >> >>>On October 22, 2002 at 18:28:15, Slater Wold wrote: >>> >>>>I have tried to analyze the same position twice now with Crafty 19.0. Both time >>>>it has locked, both in the same place. Coincedence? Or a bug? >>>> >>>>I am using the exe from Hyatt's FTP site. This output is from the screen: >>> >>>[snip] >>> >>>> 20 109:00 -2.61 1. d8=Q Nf7+ 2. Ke7 Nxd8 3. Kxd8 Ba5+ >>>> 4. Kd7 Bc7 5. Nxe3 Bxg3 6. Kc6 Bf2 >>>> 7. Nd5 Bd4 8. Kb7 Nb4 9. Nxb4 cxb4 >>>> 10. Bc2+ Kg7 11. Kc6 h5 12. Kd6 (s=7) >>>> 20 163:45 5/19* 1. Nxe3 >>>> >>>> >>>> >>>>This is after about 18.5 hours of running. The time is not updating, although >>>>Windows still reports 100% usage of the CPUs. >>> >>>Two distinct possibilities: >>> >>>I have seen two effects that both look like that... >>>If you get a fail high or fail low at that point, it might take a very, very >>>long time to resolve. >> >>I've seen both last forever. But the time always updates. Remember, this is >>almost 1,000 minutes later. Still it had not updated. >I have not seen any infinite loops, but it can happen. If you are running in >console >mode, type a "." (period) and it should give you a brief status of which moves >are being >searched ply by ply and so forth. If that doesn't respond, then something is >definitely >wrong. If it does, it might still be hung, so do it multiple times look at the >things like > >4: 20/41 that means at ply 4, it has searched 20 of 41 moves. If _none_ are >changing, >then something is hosed... if some are changing, it is making progress... Cool, I'll try that. Thanks! > > > > >> >>>Another thing that has happened is that the timer wraps. However, when that >>>happens (usually on very long analysis of several days) you will see a nonesense >>>number in the time like >>> >>> 20 991834234163:45 5/19* 1. Nxe3 >>> >>>That problem is obviously going to be very hard to reproduce.
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