Hi Stephen, Basically I want to save time. I'm working with the SCA, where each simulation is 256 Mpc/h on a side, but the AMR was done only in the central region, where the cluster is supposed to form (a few tens of Mpc). So I'm interested only in the region with the good resolution. Also, the halos I want to find are not on the boundary of this region, since that would mean they have mediocre resolution. Maybe you could give me some hints and I will try and think about it myself, at least for my particular problem. Thanks a lot, Irina Quoting "Stephen Skory" <stephenskory@yahoo.com>:
Irina,
Is there a way to run the halo finder on part of the simulation volume? For example, I have a box 256 Mpc on a side but I only want to find halos inside a smaller box, say 20 Mpc on a side.
Unfortunately, this is not currently possible in yt. However, it should be possible if the right modifications are done. Something along these lines is how HOP/FOF are parallelized, so it should be translateable to your problem. I am not making promises that I will do this, but that it is possible. I'll think about it.
However, I wonder why you only want halos in a small region? Do you have a nested simulation? Does it seem like the halo finding is taking too long? Are you looking for substructure? Depending on the answers to these questions, the modifications discussed above may not be required.
_______________________________________________________ sskory@physics.ucsd.edu o__ Stephen Skory http://physics.ucsd.edu/~sskory/ _.>/ _Graduate Student ________________________________(_)_\(_)_______________
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