Ah, so I checked in a somewhat satisfactory implementation of
isend/irecv/wait in ocamlmpi svn on ocamlforge, I've already tested the
implementation in some collective communication routines I've written, but
by all means please test it. There is even a generic isend/irecv. I think
it's been a nice addition to ocamlmpi. Hopefully when I have some time, I'll
get around to implementing more of the missing MPI calls.

Best,

-- 
Eray Ozkural, PhD candidate.  Comp. Sci. Dept., Bilkent University, Ankara
http://groups.yahoo.com/group/ai-philosophy