[OMPI users] Compiling both 32-bit and 64-bit?

[Dmitry N. Mikushin]

Hi,

Quick question: is there an easy switch to compile and install both
32-bit and 64-bit OpenMPI libraries into a single tree? E.g. 64-bit in
/prefix/lib64 and 32-bit in /prefix/lib.

Thanks,
- D.