I'm testing out a new OpenMPI 1.1.2 build on a machine here at LANL and get the following at launch:

% mpirun -np 4 IMB-MPI1
[n254:07650] pls_bproc_orted: openpty failed, using pipes instead
[n255:07651] pls_bproc_orted: openpty failed, using pipes instead
[n254:07650] pls_bproc_orted: openpty failed, using pipes instead
.
.
.


The code then runs fine with no other errors.

What is the meaning of those 3 lines?

-david
--
David Gunter
HPC-4: HPC Environments: Parallel Tools Team
Los Alamos National Laboratory