| Re: IDL falls to sleep! [message #15304 is a reply to message #15302] |
Sun, 02 May 1999 00:00   |
throop
Messages: 8
Registered: August 1998
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Junior Member |
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In article <7gcvla$393$1@hammer.msfc.nasa.gov>,
mallors@ips1.msfc.nasa.gov (Robert S. Mallozzi) wrote:
> In article <3729AD4C.55BFDAC1@astro.uio.no>,
> Terje Fredvik <tfredvik@astro.uio.no> writes:
>>
>> One of my programs is generating large data arrays which is saved
>> to file using the ordinary "save, [filename], [variable]" command.
>> The program has worked excellent, but yesterday something strange
>> started to happen; after saving a few arrays IDL went into sleep
>> mode [...]
>
> One of my co-workers is also having this problem, although it's not
> when writing files. He was doing many fits in a loop using SVDFIT.
> At a random point in the loop, IDL halts (no CPU activity), CNTRL-C
> does nothing, and IDL must be killed "brutally".
> I traced the line at which it halted - it was at a call to
> NR__SVDFIT (two underscores) [...]
Praise the lord! RSI has tried to convince me that I am the only one in the
world having this problem with 5.2, and that it has something to do with my
installation.
I have experienced this problem on three Solaris machines under IDL 5.2. I
cannot reproduce the problem using 5.0.3 on the two machines that have it
installed. The systems are an Ultra 5, Ultra 10, and Sparc 10. I was unable
to reproduce the problem in NT.
I have a long-ish (2000-line) code that consistently causes this problem,
after 1-10 hours of computation. I've sent it to RSI, who says they're
unable to reproduce it. I don't know why this would be, but at this point
they tell me there's nothing to be done. If someone else has a
self-contained program that demonstrates this situation -- or general
observations about it -- _please_ send it to RSI. E-mail me and I'd be happy
to pass along my code and my exchanges with RSI support.
For background, my program executes about 10^5 iterations through a set
of matrix transformations. It's not writing any files, and I don't believe
I use the NR__SVFIT routine that Robert mentions above. Memory usage is
~ 50 MB, and I get the same behavior from IDL and IDLDE. In the former,
ctrl-c will sometimes give the 'Interrupt encountered' message, not always.
-Henry
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| Henry Throop throop@colorado.edu (303) 492-1628 |
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| Laboratory for Atmospheric and Space Physics |
| University of Colorado, Boulder 80309-0392 |
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