[OMPI users] Mac Ifort and gfortran together

[David Robertson]

Hi all,

I'm noticing a strange problem with Open MPI 1.4.2 on Mac OS X 10.6. We 
use both Intel Ifort 11.1 and gfortran 4.3 on the same machine and 
switch between them to test and debug code.

I had runtime problems when I compiled openmpi in my usual way of no 
shared libraries so I switched to shared and it runs now. However, in 
order for it to work with ifort I ended up needing to add the location 
of my intel compiled Open MPI libraries (/opt/intelsoft/openmpi/lib) to 
my DYLD_LIBRARY_PATH environment variable to to get codes to compile 
and/or run with ifort.

The problem is that adding /opt/intelsoft/openmpi/lib to 
DYLD_LIBRARY_PATH broke my Open MPI for gfortran. Now when I try to 
compile with mpif90 for gfortran it thinks it's actually trying to 
compile with ifort still. As soon as I take the above path out of 
DYLD_LIBRARY_PATH everything works fine.

Also, when I run ompi_info everything looks right except prefix. It says 
/opt/intelsoft/openmpi rather than /opt/gfortransoft/openmpi like it 
should. It should be noted that having /opt/intelsoft/openmpi in 
LD_LIBRARY_PATH does not produce the same effect.

Thanks,
Dave