https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97390
--- Comment #3 from Thomas Schwinge <tschwinge at gcc dot gnu.org> --- Thanks for checking/confirming that. Next try: (In reply to afernandez from comment #0) > 6475 | !$acc data present([...]) async(counter+1) > | 1 > Error: Unclassifiable OpenACC directive at (1) > I'm not the developer and the app Is the source code freely available? > is supposed to > compile smoothly with the PGI compiler. Per the current versions of the OpenACC specification, the 'data' construct doesn't allow an 'async' clause, so this isn't valid OpenACC code. If you know, can you tell (is there some documentation) how PGI are implementing this?