GNU Fortran supports the following new features of the Technical Specification 18508 on Additional Parallel Features in Fortran:
CO_MIN and CO_MAX and SUM reduction intrinsics. And the CO_BROADCAST and CO_REDUCE intrinsic, except that those do not support polymorphic types or types with allocatable, pointer or polymorphic components. EVENT POST, EVENT WAIT, EVENT_QUERY) FAIL IMAGE, IMAGE_STATUS, FAILED_IMAGES, STOPPED_IMAGES)
© Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-7.2.0/gfortran/TS-18508-status.html