Linking speedup using yt #276
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Sounds great! Unfortunately it's breaking crosslinking as things stand, could you investigate and fix? |
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P.S. as far as I can see, linking with yt isn't actually tested anywhere. Could you propose a way to accomplish this? I would be happy with it either as a unit (in test_yt.py) or as an integration test (in test_tutorial_build). |
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Added a few improvements to the linking operation using yt. The first improvement is to use np.searchsorted instead of np.in1d for comparing member ids of halos. The second improvement is to reduce the amount of time .member_ids is called on halo objects. The third improvement is to cache the members ids after matching ts1 to ts2, to be reused for matching ts2 to ts1.
This was done as a necessity to link catalogs for the MEGATRON suite of simulations. Linking the dark matter-only version of MEGATRON went from taking ~3 weeks to ~3 days with my improvements.