Short answer: yes, we do compile in the prefix path into OMPI. Check
out this FAQ entry; I think it'll solve your problem:
http://www.open-mpi.org/faq/?category=building#installdirs
On Sep 8, 2008, at 5:33 AM, Paul Kapinos wrote:
Hi all!
We are using OpenMPI on an variety of machines (running Linux,
Solaris/Sparc and /Opteron) using couple of compilers (GCC, Sun
Studio, Intel, PGI, 32 and 64 bit...) so we have at least 15
versions of each release of OpenMPI (SUN Cluster Tools not included).
This shows, that we have to support an complete petting zoo of
OpenMPI's. Sometimes we may need to move things around.
If OpenMPI is being configured, the install path may be provided
using --prefix keyword, say so:
./configure --prefix=/my/love/path/for/openmpi/tmp1
After "gmake all install" in ...tmp1 an installation of OpenMPI may
be found.
Then, say, we need to *move* this Version to an another path, say /
my/love/path/for/openmpi/blupp
Of course we have to set $PATH and $LD_LIBRARY_PATH accordingly (we
can that ;-)
And if we tried to use OpenMPI from new location, we got error
message like
$ ./mpicc
Cannot open configuration file /my/love/path/for/openmpi/tmp1/share/
openmpi/mpicc-wrapper-data.txt
Error parsing data file mpicc: Not found
(note the old installation path used)
That looks for me, that the install path provided with --prefix in
configuration step, is compiled into opal_wrapper executable file
and opal_wrapper works iff the set of configuration files is in this
path. But after move of the OpenMP installation directory the
configuration files aren't there...
An side effect of this behaviour is the certainty that binary
distributions of OpenMPI (RPM's) are not relocatable. That's
uncomfortably. (Actually, this mail is initiated by the fact that
Sun ClusterTools RPM's are not relocatable)
So, does this behavior have an deeper sence I cannot recognise, or
maybe the configuring of global paths is not needed?
What I mean, is that the paths for the configuration files, which
opal_wrapper need, may be setted locally like ../share/openmpi/***
without affectiong the integrity of OpenMPI. Maybe there were were
more places where the usage of local paths may be needed to allowe
movable (relocable) OpenMPI.
What do you mean about?
Best regards
Paul Kapinos
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Jeff Squyres
Cisco Systems
