On Jun 14 2014, William Gropp wrote:
My feeling on this is (a) there have already been too many oversights because of the tremendous scope of the changes and (b) the mpif.h interface, in practice, should and will be used mostly for legacy applications - thus either defining it as similar to the original "basic" support, with any new constants, will satisfy the users without the risk of finding another MPI_SIZEOF issue. At this point I have no confidence that there isn't something else lurking in the wings, and that argues for as conservative an approach as possible.
In my view, that is the only reasonable approach. Sane people use it only in 'legacy' code or because the code is extremely defensive. In neither case are major new facilities relevant. Regards, Nick Maclaren. Regards, Nick Maclaren.