Author: Amir Ban
Date: 12:38:22 08/24/01
Go up one level in this thread
On August 23, 2001 at 23:59:05, Robert Hyatt wrote: >On August 23, 2001 at 10:41:40, Eduard Nemeth wrote: > >>On August 23, 2001 at 10:33:58, Amir Ban wrote: >> >>>On August 23, 2001 at 07:34:58, Eduard Nemeth wrote: >>> >>>>On August 23, 2001 at 07:20:04, Graham Laight wrote: >>>> >>>>I agree. But, PC from Junior was cruched, so he play on an another PC! >>> >>>Junior did not switch computers. The problem was overheating, and it was solved >>>by putting a ventillator next to the machine (thanks Jaap for suggesting the >>>solution). >>> >>>On the 21st move, after more than 20 minutes of thinking without getting a move, >>>a check showed the CPU's idle. We took an official timeout, rebooted and >>>restarted. After a few minutes this happened again. We then took a second >>>timeout, put the ventillator, and everything was fine after that. Junior lost >>>about half an hour on the clock overall. > >Did the ICCA change the way the time-out rule works? IE in the events I >have been at, it was necessary for the computer to _crash_ before it could >be re-started. I lost at least one game in the exact circumstance you >described, which sounds more like a program bug than a system problem. And >when Cray Blitz "hung" the question asked was "did the cray go down, or did >the program just deadlock?" When we showed that the cray was still up (ie >like your checking the status to see that both cpus were idle) we were told >to "sit and wait" since the machine was alive and well. We did and lost on >time. > >The thinking back then was that program bugs were just that, program bugs. And >if a program deadlocked itself, that was a problem, just as if the program went >into some sort of tight loop due to a subscript overflow or whatever. The >problem with allowing re-starts is that it is _impossible_ to restart the engine >in the same identical state it was in when it hung... > Program bugs are not often solved by a ventillator. FYI it was very hot on Thursday and the playing hall had no ventillation. It was the TD's idea to check the performance monitor, and when it showed idle, he authorized a reboot. Amir
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