Re: Fatal Error Message

Hi Lisa,

Please do add comments to help people follow your code. After trying
the things I've already suggested, if the problem persists then send
your script(s) to ncl-talk with some data (see directions here:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk). Others on the list
are probably more adept than I am at spotting specific bugs, but my
suggestions thus far hopefully point you in the right direction.

Jared

On 03/26/2014 01:44 PM, Lisa Alexander wrote:
> Hi Jared,
> Would it help if I sent you a copy of the program? It do not have very many comments through it though. I am still very new to NCL, so I am sure my programs could be much more efficient.
> Thanks for your help,
> Lisa
> --------------------------------------------
> On Wed, 3/26/14, Jared Lee <jaredlee@ucar.edu> wrote:
>
> Subject: Re: Fatal Error Message
> To: "Lisa Alexander" <lisa_s_a@yahoo.ca>
> Received: Wednesday, March 26, 2014, 3:40 PM
>
> Hi Lisa,
>
> It's probably not the specific cause, unless some other
> script is calling this script as a function, but it still
> couldn't hurt to try that (and it's usually good programming
> practice to do that anyway). What's almost certain is
> that somehow you're getting an array that's too large for
> your computer's memory to handle. So if the simple
> things such as cleaning up/deleting variables doesn't help,
> I'd suggest thinking about if there's another way you can
> break up your data processing (loops? subsetting your data?
> writing your data to file?) so that you don't have such huge
> array(s) being stored in memory or being operated
> upon. Going from the information you've sent so far, I
> don't really have anything more specific to suggest at this
> point.
>
> Jared
>
>
> On 03/26/2014 01:26 PM, Lisa Alexander wrote:
> > Hi Jared,
> >
> > Thanks for the input. In the program I don't delete any
> of the variables, because they are all overwritten on each
> consecutive loop (the values are all found again). Do you
> figure this would cause the problem?
> >
> > Thanks,
> > Lisa
> > --------------------------------------------
> > On Wed, 3/26/14, Jared Lee <jaredlee@ucar.edu>
> wrote:
> >
> > Subject: Re: Fatal Error
> Message
> > To: ncl-talk@ucar.edu
> > Received: Wednesday, March 26, 2014,
> 3:21 PM
> > Lisa,
> > Your script definitely has a
> problem with memory. My
> > first guess is
> > that it has an array to which elements
> are being added in a
> > loop, which
> > eventually becomes so large that its
> memory requirements
> > exceed that of
> > your computer. Either that, or
> you're trying to read
> > in large
> > multidimensional arrays from hundreds
> of files at
> > once. Or you could
> > potentially have a memory leak
> somewhere in your script,
> > which can
> > sometimes be caused by not deleting
> variables when they're
> > no longer
> > necessary. One of those
> possibilities has typically
> > been the cause of
> > similar situations that I've
> experienced in the past.
> > Jared
> > On 03/26/2014 12:56 PM,
> Lisa Alexander wrote:
> > > Hello,
> > > I have been running a program on
> my computer, but this
> > time the case time length is very
> long. When I run it, it
> > stops part way through and gives me
> this message:
> > >
> > > fatal:NclMalloc
> Failed:[errno=12]
> > > Segmentation fault (core dumped)
> > >
> > > I must say, whenever I run the
> program (this time and
> > other times), the program runs very
> quickly to begin with,
> > but slows down over time.
> > >
> > > Can somebody let me know what the
> error message means?
> > > Thanks,
> > > Lisa
> > >
> _______________________________________________
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> > --
> > ================
> > Dr. Jared A. Lee
> > Postdoctoral Research Scientist
> > National Center for Atmospheric
> Research
> > Phone: 303.497.8485
> > Email: jaredlee@ucar.edu
> > Web: https://staff.ucar.edu/users/jaredlee
> > ================
> >
> _______________________________________________
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> >
>
> -- ================
> Dr. Jared A. Lee
> Postdoctoral Research Scientist
> National Center for Atmospheric Research
>
> Phone: 303.497.8485
> Email: jaredlee@ucar.edu
> Web: https://staff.ucar.edu/users/jaredlee
> ================
>
>

-- 
================
Dr. Jared A. Lee
Postdoctoral Research Scientist
National Center for Atmospheric Research
Phone: 303.497.8485
Email: jaredlee@ucar.edu
Web: https://staff.ucar.edu/users/jaredlee
================
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