Hello, * Open MPI wrote on Wed, Sep 06, 2006 at 01:00:00PM CEST: > #334: Building with Libtool 2.1a fails to run OpenIB BTL
> Are you testing uninstalled or installed programs/libraries? > > Installed. > > If you are testing an uninstalled program: does libtool generate a shell > wrapper for it? If yes: post the two shell wrappers generated by 1.5.22 > and HEAD. > > I was testing with a trivial "hello world" MPI application; i.e., one that > I had compiled with mpicc and was running with "mpirun -np 2 --mca btl > openib hello". Hence, I was testing against installed trees of Open MPI. > I took care to "rm -rf" the installation tree before testing each so that > there would be no kruft left from prior installs. OK, I can only assume that with 1.5.22, some code links against libibverbs, or loads it earlier at runtime, so that the symbol is present. In any case I wonder why mthca.so isn't linked directly against libibverbs (maybe useful to suggest that to upstream). To find out the culprit, here's a couple of quick (well) ways: diff build-with-lt1.5/Makefile build-with-lt2.1a/Makefile and look for differences in library link variables. Otherwise, the config.log outputs should give clues. To give you some more hints for possible causes: ompi_info could have a different set of RPATH entries, or different NEEDED libraries than your test executable; if any of those cause libibverbs.so to be loaded, then the symbol would be visible already. Maybe your test executables even have different RPATHs or NEEDED libs (find out with 'objdump -p' and ldd)? > I've attached 2 tarballs to the bug (you have to go to the URL of the bug > to get them; they are not included in the mails): If there are tarballs available at http://svn.open-mpi.org/trac/ompi/ticket/334, then I'm too blind to find them. Would that be elsewhere? > * One with all the configure output and the wrapper script for ompi_info. > Note that ompi_info -- which lt_dlopen()'s the OpenIB BTL -- does not show > the same problem (i.e., the OpenIB BTL opens properly and ompi_info shows > its information). This happens with both the uninstalled and installed > ompi_info. > * Another with the same for 2.1a. That would be very helpful. Cheers, Ralf
