@Yosef Zlochower reported an issue where SEGFAULTs are triggered from within LoopControl.

I can reproduce this using the thornlist and parameter file that Yosef provided. I use the attached option list, where using -std=gnu++11 instead of -std=c++17 -D_GNU_SOURCE is required for the issue to show up for me.

I run using

export OMP_NUM_THREADS=2
exe/cactus_yosef test.par

and the CPU on my workstation is a “12th Gen Intel(R) Core(TM) i7-12700”

attachment:

OptionList

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2832/possible-race-condition-in-loopcontrol