[daip] all clear

Deborah Haarsma dhaarsma at calvin.edu
Tue Jul 22 15:42:04 EDT 2003


Eric,

Thanks for the explanation, it's helpful to understand
what happened and where to look next time.

Debbie

On Tue, 22 Jul 2003, Eric Greisen wrote:
> Deborah Haarsma writes:
>  > Eric and/or daip,
>  >
>  > We tried re-booting our Linux machines, and the problem with aips
>  > tasks not starting has disappeared.  (Usually in Linux you like to know
>  > what went wrong and why, but sometimes the Bill Gates way turns out to
>  > work. :-/)
>  >
>
> The AIPS start-up does depend on a number of things going right.
> Mainly this would be the TGET/TPUT file, the task communication file,
> and the system parameter file.  In particular, if the last one were
> locked by some rogue process, then tasks would appear not to start.
> They should show up in ps however but hang waiting for that file and
> aips would eventually conclude that they had not started.  You could
> look in /tmp for files of 0 bytes like /tmp/COMB1.12345 where 12345 is
> the process ID number under which COMB1 should be running.  Maybe
> there was a lock on /tmp.  But in these cases aips would get an error
> in ZACTV9 and not reach the timing out portion of the code.
>
> Glad a re-boot solved it.  Linux does get in knots sometimes and this
> is the cleanest solution.
>
> Cheers,
>
> Eric Greisen
>

-- 




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dr. Deborah B. Haarsma
office:  SB 175
mail:    Physics & Astronomy Department
         Calvin College
         3201 Burton Street SE
         Grand Rapids, MI 49546
email:   dhaarsma at calvin.edu
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