[Yt-dev] Halo Profiler projections

Matthew Turk matthewturk at gmail.com
Mon Apr 11 17:34:56 PDT 2011


Hi Sam,

My feeling is that the HaloProfiler does a *lot*, and I would like to
see it become feature parity with enzo_anyl.  (A shame that we haven't
yet fully recreated that enzo_anyl experience yet, with anything in
yt...)  As such, I think we should be positioning it as useful for a
lot of domains.

I guess the choice is really, do we want it to do something smart?  Or
do we want to let the code knowingly go down, and then tell the user
"Sorry, but we warned you!" while shaking our heads and shrugging our
shoulders.

-Matt

On Mon, Apr 11, 2011 at 8:20 PM, Sam Skillman <samskillman at gmail.com> wrote:
> 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
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>> http://lists.spacepope.org/listinfo.cgi/yt-dev-spacepope.org
>
>
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