> I have sofar used a homogenous 32-bit cluster.
> Now i have added a new machine which is 64 bit
> This means i have to reconfigure open MPI with
Not necessarily. If you don't need the 64bit capabilities you could run
32 bit binaries along with a 32 bit version of OpenMPI. At least that
approach has worked so far for me.
Manager, Sequence Analysis Facility, Biology Division, Caltech