This functionality is there to overcome a bug in libibverbs (that prints a dire warning about Cisco usNIC devices not being supported).
However, I can see how this additional linkage is undesirable. We can probably flip the default on this component to not build by default -- but leave it there as a workaround for users who want to use it (i.e., all this component does is suppress the warning from libibverbs). Another workaround that Cisco is now shipping is a "dummy" libibverbs plugin for usnic devices that also suppresses this warning (see https://github.com/cisco/libusnic_verbs, if you care). > On Feb 2, 2016, at 9:21 AM, Dave Love <d.l...@liverpool.ac.uk> wrote: > > Number Cruncher <number.crunc...@ntlworld.com> writes: > >> Having compiled various recent Open MPI sources with the same >> "configure" options, I've noticed that the "libmpi.so" shared library >> from 1.10.1 now depends itself directly on >> libibverbs.so.1. Previously, 1.10.0 for example, only plugins such as >> mca_btl_openib.so depended on it. > > For what it's worth, you can work around that (using GNU tools) by > adding -Wl,--as-needed to LDFLAGS on configure. There's a lot of > similar instances, and it would be good to tidy them by only linking > against what's necessary, even if it doesn't help startup. That's > probably tedious but should be a straightforward way to contribute, in > case anyone's interested. > > It seems we mostly don't believe in packaging round here, but you can > see easily by running rpmlint (or the dpkg equivalent? -- I forget): > > $ vagrant ssh -c 'rpm -q openmpi; rpmlint openmpi | grep -c > unused-direct-shlib-dependency' > openmpi-1.10.2-2.fc24.x86_64 > 144 > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2016/02/28434.php -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
