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From: Andreas on 9 Feb 2010 10:52
Hello all,

I'm calling some Fortran code from within a matlab loop, which usually takes ca. 10 seconds to run through per run. The whole program is set up like this:

nmc = 1e3;
while nrun < nmc
nrun = nrun +1;
!echo -e "orbitinp.tmp\n-100" | ./orbit
% Followed by lots of stuff to evaluate the output from ./orbit
end

Sometimes the "orbit" code freezes, though, so I would like to kill it from within matlab if that happens. Is there a way to set something like a process-time threshold so that I could say

%tic
!echo -e "orbitinp.tmp\n-100" | ./orbit &
if time > threshold
continue
end

Thanks for any tip or alternative ideas.
Andreas
From: Steve Amphlett on 9 Feb 2010 11:40
"Andreas " <andreas.koch1(a)gmx-removethis.de> wrote in message <hks0b4$fl9$1(a)fred.mathworks.com>...
> Hello all,
>
> I'm calling some Fortran code from within a matlab loop, which usually takes ca. 10 seconds to run through per run. The whole program is set up like this:
>
> nmc = 1e3;
> while nrun < nmc
> nrun = nrun +1;
> !echo -e "orbitinp.tmp\n-100" | ./orbit
> % Followed by lots of stuff to evaluate the output from ./orbit
> end
>
> Sometimes the "orbit" code freezes, though, so I would like to kill it from within matlab if that happens. Is there a way to set something like a process-time threshold so that I could say
>
> %tic
> !echo -e "orbitinp.tmp\n-100" | ./orbit &
> if time > threshold
> continue
> end
>
> Thanks for any tip or alternative ideas.
> Andreas

Maybe overkill, but...

Have your process take a numerical argument. Pass that value to alarm() and have a signal trap ready for SIGALRM, which quits the process.
From: Jan Simon on 10 Feb 2010 17:02
Dear Andreas!

> Sometimes the "orbit" code freezes, ...

The easiest way would be to clean the code of "orbit", such that it don't freeze anymore...

Kind regards, Jan
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