I honestly don’t know how GCC is finding openmpi. Yes, my Ubuntu ships with OpenMPI on it, but how is my mpich mpicc shell script removing mpich from the compile command? hmmm, unless make is not taking my environment with it when sub make commands for some of my packages….. I get mpicc from mpich-3.1.1 through my modules, but openmpi is installed in the default /usr/local location…. I think I see the drift of the problem. On Jul 2, 2014, at 5:33 PM, Dave Goodell (dgoodell) <[email protected]> wrote:

On Jul 2, 2014, at 3:06 PM, Brian Van Straalen <[email protected]> wrote:

...

an interesting error while using mpicc with mpich-3.1.1

...

which mpicc /opt/pkg/mpich-3.1.1/bin/mpicc mpicc -compile-info gcc -I/opt/pkg/mpich-3.1.1/include -L/opt/pkg/mpich-3.1.1/lib -Wl,-rpath

[...]

...

'/usr/lib/openmpi/include' '-I' '/usr/lib/openmpi/include/openmpi' '-pthread'

That line looks awfully suspicious to me. You probably have a conflicting installation of Open MPI. Maybe this is an older version of OS X that came with Open MPI installed in /usr?

-Dave

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Brian Van Straalen Lawrence Berkeley Lab [email protected] Computational Research (510) 486-4976 Division (crd.lbl.gov)