[Yt-dev] parallel profiler problem

Matthew Turk matthewturk at gmail.com
Tue Mar 24 12:20:33 PDT 2009


I think for now, you can set the minimum virial mass for halo
profiling, in the parameter file, to be higher.  Let's ponder the
long-term solution to this particular corner case, and see if anything
comes up?

On Tue, Mar 24, 2009 at 12:02 PM, Stephen Skory <stephenskory at yahoo.com> wrote:
>
>> I guess a secondary question would be about the meaning of this halo;
>> it's 36 particles, but they're all within a radius of less than the dx
>> of their host grid.  Once I've changed the requirement for getting
>> grids to be 2*radius, we end up with three cells included.  This
>> profile would be uninformative.
>
> The meaning of this profile would be muddled at best.
>
> Let's think about when this issue would pop up. We've seen it here, with a very large simulation with many haloes. In this case, the only time you're interested in the profile of the small haloes is for statistics, like me. If you're trying to do anything more with them you've done the wrong sim. And since I'm just doing statistics, throwing out bad ones, or having a few junky values, won't change things. What other cases can we think of where this would be an issue?
>
>  _______________________________________________________
> sskory at physics.ucsd.edu           o__  Stephen Skory
> http://physics.ucsd.edu/~sskory/ _.>/ _Graduate Student
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