As far as I know, the "futex" issue only affected MacOS and hasn't been one
for several years now.
here:
https://www.unidata.ucar.edu/software/ldm/ldm-current/known-problems.html
it did not specify MacOS directly, but said "some" systems.
I can work around it, just thought I would check since the issue was
listed over a year ago... while working with dishes as feeds, i've never
experienced the issue... but it could also be related to a ryzen cpu (my
first ryzen, though I have used amd before) instead of intel, or some
other buggery.
cheers,
--patrick