[Yt-dev] RMS mass overdensity method

[Matthew Turk]

Hi Stephen,

There are a couple things.  It looks like every traceback ends with
KeyboardInterrupt.  Not sure what that's about, but it's difficult to
tell what's going on.  I've created a patch to separate out the
tracebacks from each processor, but keep in mind that this *could*
cause a deadlock if not all of them signal at the same place.  (An
alternative would be to print each traceback to a file and then exit,
which I'll put into trunk, actually, if this sounds like a good plan
to y'all.)

http://paste.enzotools.org/show/67/

It should be useful in your case.

What I would try, to separate out the memory issues, would be manually
cleaning each grid after you do, say, 10 sphere:

for g in pf.h.grids: g.clear_data()

and see if that fixes it.  If so, then it's a memory issue, and there
is likeyl a reference hanging around.  On immediate inspection I
didn't see it, but I'll take another look.  If you can get the
separated out tracebacks, that'd be awesome.

-Matt

On Mon, Mar 2, 2009 at 7:35 PM, Stephen Skory <stephenskory at yahoo.com> wrote:
> Hi Matt,
>
> I'm trying to run my code on L7, but it's crashing. It does a fair amount of the random spheres, and crashes like this:
>
> http://stephenskory.com/err.txt
>
> The version I'm using is here:
>
> http://paste.enzotools.org/show/66/
>
> I'm not asking you to fix this, Matt, but can you speculate on what might be happening? I am thinking it might be due to memory, which is why I am trying to 'del sp' in the script above, but that makes no difference. I printed out the last 100 or so centers that were chosen, and looked at them by hand to see if that was a problem, but none gave me any problems. I guess what I'm worried about is if what is causing this error will go away with your changes to this method? And therefore how much time should I spend trying to track it down?
>
> Thanks!
>
>  _______________________________________________________
> sskory at physics.ucsd.edu           o__  Stephen Skory
> http://physics.ucsd.edu/~sskory/ _.>/ _Graduate Student
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