Nothing leaps to mind - not seeing that anywhere else. If that's all you saw, then it doesn't look like it even got to the point of trying to launch something. You might set the following:
mpirun -mca plm_base_verbose 5 -mca ras_base_verbose 5 -mca rmaps_base_verbose 5 -mca ess_base_verbose 5 foo Will generate (hopefully) a lot of output, but might get some idea as to where it is stuck. On Sep 20, 2013, at 1:02 PM, Sylvestre Ledru <sylves...@debian.org> wrote: > On 20/09/2013 21:49, Sylvestre Ledru wrote: >> Hello, >> >> In Debian, we are in the process of switching the default MPI >> implementation from version 1.4 to 1.6. >> >> Every architectures are fine beside ia64. Any program based on OpenMPI >> 1.6.5 is freezing. >> >> With a basic test case: >> MPI_Init(NULL, NULL); >> MPI_Finalize(); >> >> mpirun -c 4 foo >> => freeze >> The backtrace does not show anything. >> > mpirun --mca plm_base_verbose 5 foo > returns: > [merulo:26555] mca:base:select:( plm) Querying component [rsh] > [merulo:26555] mca:base:select:( plm) Query of component [rsh] set > priority to 10 > [merulo:26555] mca:base:select:( plm) Querying component [slurm] > [merulo:26555] mca:base:select:( plm) Skipping component [slurm]. Query > failed to return a module > [merulo:26555] mca:base:select:( plm) Querying component [tm] > [merulo:26555] mca:base:select:( plm) Skipping component [tm]. Query > failed to return a module > [merulo:26555] mca:base:select:( plm) Selected component [rsh] > > Sylvestre > > _______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel
