This error is usually happens when libibverbs is dlopened without RTLD_GLOBAL flag.
On Wed, Sep 06, 2006 at 03:05:39PM +0200, Ralf Wildenhues wrote: > 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 > _______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel -- Gleb.
