Comment (by Gabriele Bozzola):

kuibit’s discovery mechanisms can be slow on distributed filesystems when there are lots of small files (for ASCII files, kuibit opens every file and does regular expression matching to find what’s inside). I wrote some recommendations here

https://sbozzolo.github.io/kuibit/faq.html#some-of-the-attributes-in-simdir-are-slow

It is also a good idea to use HDF5 whenever possible (eg for waveform and horizon data too)

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Note also that Python 3.6 end of life was 2021. Numpy dropped support from Python 3.6 in 2020 (version 1.20).

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2696/update-kuibit-to-140