Comment (by Roland Haas):

Are you compiling on a cluster (which one)? In that case, it could be a limit imposed by the admins. Would you mind trying with ./simfactory/bin/sim build -j1 bns to use only a single parallel make process? Also if you could provide the output of ulimit -a that would help.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2176/test-binary-neutron-star-example