In the past the calculation stopped several times after some hundred hours of computation with some system messages like \"cannot rename to an already ecisting file\" (translated from german).
I suppose you have an internal integercounter defining the actual file-number. For system-calls like \"copy\" or Fortranstatements like \"OPEN\" you use an internal Fortran-write to generate the corresponding characterstring. Obviously the correspondig FORMAT-instruction may not follow the magnitude of this counter (f.ex. when passing from 999 to 1000 you have to go from I3 to I4), so your character-string may point to an existig file. I had these probelems in the past with our codes.

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It\'s more likely that the file in question was locked at the critical moment by a virus checker, so the program couldn\'t delete the \'old\' file.
Norton is notorious in this way, and possibly others.
The trick here is to exclude ALL of the BOINC folders from both automatic and manual scanning.

AVG, Ad-Aware, and Spybot, are NOT problems in this matter.

It\'s more likely that the file in question was locked at the critical moment by a virus checker, so the program couldn\'t delete the \'old\' file.
Norton is notorious in this way, and possibly others.
The trick here is to exclude ALL of the BOINC folders from both automatic and manual scanning.

AVG, Ad-Aware, and Spybot, are NOT problems in this matter.

All Boinc Folders are actually excluded for The Av-scanning!

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Is it this message?

02/06/2007 15:09:31||Can\'t rename current state file to previous state file; The process cannot access the file because it is being used by another process. (0x20)

or these?

11/29/2007 2:49:34 PM||Can\'t rename current state file to previous state file; Access is denied. (0x5)
11/29/2007 2:49:40 PM||Can\'t delete previous state file; Access is denied. (0x5)


http://boinc.berkeley.edu/dev/forum_thread.php?id=1853

http://boinc.berkeley.edu/dev/forum_thread.php?id=1470


If so, this is a message generated by Boinc rather than climateprediction.net. I haven\'t experienced it myself, so I can\'t make any suggestions beyond that which is in the threads.

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I'm a volunteer and my views are my own.
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