I ran into an interesting change from OpenMP 3.1 to 4.0: ATOMIC variables can no longer be ALLOCATABLE (I've asked on an OpenMP forum why this change was made). This broke my code when I compiled it under gfortran 4.9.1, but it still works with 14.0.3, so assume Intel Fortran does not (luckily for me) implement the full OpenMP 4.0 standard yet. I wish they had kept the old behavior with a bare ATOMIC directive and implemented the new behavior with the ATOMIC UPDATE form. Probably to late to complain now.
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