Jeff, Sorry if you already noticed: It appears that there is no mention of --with-libfabric or --with-libfabric-libdir in the README for 1.10.0rc2
-Paul On Tue, Jul 21, 2015 at 6:59 PM, Jeff Squyres (jsquyres) <jsquy...@cisco.com > wrote: > On Jul 21, 2015, at 4:38 PM, Orion Poplawski <or...@cora.nwra.com> wrote: > > > > I see that 1.10.0 can make use of libfabric, but I don't see much > > documentation on it and certainly nothing in the README file. > > Oops; shame on us. We'll update README. > > > Since libfabric > > makes use of libibverbs and librdmacm, does it replace that > functionality in > > openmpi, or should we continue to build openmpi with direct verbs/rdmacm > support? > > The current status of Mellanox IB support in libfabric is rudimentary, at > best (it's layered over verbs, as you noted). As such, OMPI doesn't use > libfabric with verbs -- there wouldn't be much point. libfabric is better > with other networks, such as Cisco usNIC and Intel PSM. There's a Cray > uGNI libfabric provider coming along, too -- but it's not in the released > libfabric distribution yet. > > Hence: > > 1. you should continue building the openib BTL with native verbs support > 2. you should use --with-libfabric to compile in support for Cisco usNIC- > and Intel PSM-based fabrics > > Make sense? > > -- > Jeff Squyres > jsquy...@cisco.com > For corporate legal information go to: > http://www.cisco.com/web/about/doing_business/legal/cri/ > > _______________________________________________ > devel mailing list > de...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel > Link to this post: > http://www.open-mpi.org/community/lists/devel/2015/07/17676.php > -- Paul H. Hargrove phhargr...@lbl.gov Computer Languages & Systems Software (CLaSS) Group Computer Science Department Tel: +1-510-495-2352 Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
