[yt-users] Hop in parallel?

Stephen Skory s at skory.us
Fri Feb 24 16:20:38 PST 2012


Hi Mike,

I think I've fixed the original HOP problem you had. It's in my yt branch here:

https://bitbucket.org/sskory/yt/overview

could you try with the HOP (HaloFinder) with the new changes? Let me
know, and if it works for you, it will go into the main branch.

With regards to your new problem, I tried the same swap of methods of
calculating "total_mass" that we did in the HaloFinder, but I think
there's something screwy going on with  .quantities, and I haven't
been able to track it down yet.

With regards to speed, in general HaloFinder will be faster on all
datasets than parallelHF for datasets that HaloFinder can handle. But
HaloFinder is limited by the size of the dataset and by the cosmology
of the dataset (small cosmologies mean that a large padding is needed
when running in parallel, and this will defeat the point of
parallelism).


-- 
Stephen Skory
s at skory.us
http://stephenskory.com/
510.621.3687 (google voice)



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