Sorry for the super-late reply. :-\
Yes, ERR_TRUNCATE means that the receiver didn't have a large enough buffer.
Have you tried upgrading to a newer version of Open MPI? 1.4.3 is the current
stable release (I have a very dim and not guaranteed to be correct recollection
that we fixed somethin
Hi:
I'm running openmpi 1.2.8. I'm working on a project where one part
involves communicating an integer, representing the number of data
points I'm keeping track of, to all the processors. The line is simple:
MPI_Allreduce(&np,&geo_N,1,MPI_INT,MPI_MAX,MPI_COMM_WORLD);
where np and geo_N
