[Yt-dev] Halo Profiler projections

Sam Skillman samskillman at gmail.com
Mon Apr 11 17:20:01 PDT 2011


Hi
I would advocate, instead of changing the default, adding a message that
says: halo profiler projections will be NxN, and preferably have it print
somewhere just before it might die.  That way when it does crash, it will be
simpler to figure out why.
Two Cents,
Sam

On Mon, Apr 11, 2011 at 8:11 PM, Stephen Skory <s at skory.us> wrote:

> Hi all,
>
> I just spent some time trying to diagnose a segfault when the
> HaloProfiler was trying to make projections of the haloes. The problem
> was in making the FixedResolutionBuffer, the image it was trying to
> make was 16K by 16K, which cannot fit in any normal machine's memory.
> I think this is because I am looking at a zoom-in simulation of a
> smallish cosmological size, with high resolution in the region of
> interest. The default projection width in the HaloProfiler is 8 Mpc,
> so I had a big numerator and a small denominator.
>
> What do we think about changing this default to some multiple of the
> halo maximum radius? I think any constant value will make problems.
>
>
> --
> Stephen Skory
> s at skory.us
> http://stephenskory.com/
> 510.621.3687 (google voice)
> _______________________________________________
> Yt-dev mailing list
> Yt-dev at lists.spacepope.org
> http://lists.spacepope.org/listinfo.cgi/yt-dev-spacepope.org
>
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