I am getting a curious error on a simple communications test. I have altered the std mvapich osu_latency test to accept receives from any source and I get the following error
[d013.sc.net:15455] *** An error occurred in MPI_Recv
[d013.sc.net:15455] *** on communicator MPI_COMM_WORLD
[d013.sc.net:15455] *** MPI_ERR_TRUNCATE: message truncated
[d013.sc.net:15455] *** MPI_ERRORS_ARE_FATAL (goodbye)
the code change was...
MPI_Recv(r_buf, size, MPI_CHAR, MPI_ANY_SOURCE, 1, MPI_COMM_WORLD, &reqstat);
the command line I run was
> mpirun -np 2 ./osu_latency
Now I run this on 2 types of host machine configurations. One that has Infinipath HCAs installed and another that doesn't. I run both of these in shared memory mode ie: dual processes on the same node. I have verified that when I am on the host with Infinipath I am actually running the OpenMPI mpirun, not the mpi that comes with the HCA.
I have built OpenMPI with psm support from a fairly recent svn pull and run the same bins on both host machines... The config was as follows:
> $ ../configure --prefix=/opt/wkspace/openmpi-1.3 CC=gcc CXX=g++> mpirun --version
mpirun (Open MPI) 1.4a1r18908
The error presents itself only on the host that does not have Infinipath installed. I have combed through the mca args to see if there is a setting I am missing but I cannot see anything obvious.
Any input would be appreciated. Thanks. Tom