Hi,
On 9/28/06, Glenn Johnson <gjohn...@srrc.ars.usda.gov> wrote:
I have an 8-way AMD64 system. I built a 64 bit open-mpi-1.1
implementation and then compiled software to use it. That all works
fine.
In addition, I have a 32 bit binary program (Schrodinger Jaguar) that I
would like to run on this machine with mpi. Schrodinger provides source
code to build an mpi compatibility layer. This compatibility layer
allows jaguar to use a different mpi implementation than that which the
software was compiled with. I do not want to give up the 64 bit open-mpi
that I already have and am using.
So my questions are:
1. Can I build/install a 32 bit version of open-mpi even though I
already have a 64 bit version installed?
2. What "tricks" might I need to do to make sure a program calls
the correct version of mpi (32 or 64 bit)?
3. Would I do better considering running jaguar in a 32 bit chroot
environment?
I'm a simple user who is using openmpi in 32bit and 64bits on a amd64
linux, on a 64bit sistem. But I also have openmpi and mpich2 in a
32bit chroot.
I've installed openmpi 32bit in /opt/openmpi-1.1.1-32bits (amd64 is
installed in /opt/openmpi-1.1.1-amd64) .. and its easy to change
between the two.. either with symlinks, PATHs or scripts.. to use one
.. or the other.
the chroot was a lot more trouble, and I did it because I wasn't being
able to compile openmpi (1.0 at the time) in 32bit mode on my 64bit
system.
Thanks.
--
Glenn Johnson <gjohn...@srrc.ars.usda.gov>
USDA, ARS, SRRC
--
Miguel Sousa Filipe
