On Oct 27, 2006, at 11:04 AM, shane kennedy wrote:
thank you for your reply. i am using mpicc/mpif90. i am able to successfully compile, but during execution i receive an "error while loading shared libraries."
See this FAQ category -- I believe your questions should be answered there:
http://www.open-mpi.org/faq/?category=running
i tried compiling/linking w/ -static flag to overcome the shared library error. however, linking w/ -static gives me an error of "ld: cannot find -lmpi." i do not have a libmpi.a file. i do have a libmpi.la file but don't know how to link to it.
The .la files are Libtool Archive files (for GNU Libtool). They are only useful if you are using GNU Libtool to build your application and you are not using our wrapper compilers (which is not recommended). So -- you should probably just ignore them.
As for compiling statically, OMPI defaults to building dynamically (and not statically). You can choose to build OMPI statically by using the "--enable-static" (and potentially "--disable-shared") options to OMPI's configure script. This will then create and install libmpi.a (and others).
Note that per mails earlier this month on this list, there are currently issues with creating *fully* static MPI executables with OpenIB / OFED networks (i.e., compiling with -static as opposed to just having libmpi.a so that MPI is statically included in your application). Much discussion about this topic has occurred off this list; more information should be available shortly (probably on the FAQ). Feel free to ping me off-list if you need further information before it becomes available on the FAQ.
-- Jeff Squyres Server Virtualization Business Unit Cisco Systems
