https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82233
--- Comment #17 from Christophe Lyon <clyon at gcc dot gnu.org> --- Thanks for your effort; I'm still seeing noise though. Sorry, I'm not fluent in fortran: is there a way to call wait() from fortran? I could try adding it at the end of the testcase, to see if it reliably fixes the problem I observed.