Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |  

This web mail archive is frozen.

This page is part of a frozen web archive of this mailing list.

You can still navigate around this archive, but know that no new mails have been added to it since July of 2016.

Click here to be taken to the new web archives of this list; it includes all the mails that are in this frozen archive plus all new mails that have been sent to the list since it was migrated to the new archives.

From: Miguel Figueiredo Mascarenhas Sousa Filipe (miguel.filipe_at_[hidden])
Date: 2006-09-29 18:56:06


On 9/28/06, Glenn Johnson <gjohnson_at_[hidden]> 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

> Thanks.
> --
> Glenn Johnson <gjohnson_at_[hidden]>

Miguel Sousa Filipe