-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, Jeff... thanks for getting back to me.
Jeff Squyres wrote: > On Nov 29, 2007, at 12:13 PM, Karol Mroz wrote: > >>> One solution might be to remove the .ompi_ignore but to only enable >>> the SCTP BTL when an explicit --with-sctp flag is given to configure >>> (or something similar). You might want to run this by the [OMPI] >>> group first, but there's precedent for it, so I doubt anyone would >>> object. >> The situation at present is that the SCTP BTL only builds on FreeBSD, >> OSX and Linux and only if the SCTP is found to be in a standard place. >> On Linux, for instance, you need to have installed the lksctp >> package in >> order for the SCTP BTL to build. We also have a --with-sctp configure >> option where you can specify the SCTP path should it not be in a >> standard location. If SCTP does not exist on the system, then the BTL >> will not build and more importantly, will not break the build of the >> overall system. > > Is this SCTL lksctp package installed by default on any Linux? OS X? > Solaris? The lksctp package is not installed by default on any Linux distribution that I'm aware of. For OSX, SCTP support is provided via the SCTP Network Kernel Extension (http://sctp.fh-muenster.de/sctp-nke.html) and this too is not installed by default. Solaris does have SCTP support by default, but we currently do not build on Solaris systems regardless. >> My question now, is it necessary for us to alter the above >> behavior (as initially mentioned by Jeff), or is having the SCTP BTL >> build iff SCTP is found sufficient? > > > I think the only thing that matters is what the current default > behavior is -- if the .ompi_ignore is removed, will it hose anyone > unexpectedly? I.e., if they build and run today and it works, then > the .ompi_ignore is removed and you build and run... and it doesn't > work. That my only real concern. Removal of .ompi_ignore should not create build problems for anyone who is running without some form of SCTP support. To test this claim, we built Open MPI with .ompi_ignore removed and no SCTP support on both an ubuntu linux and an OSX machine. Both builds succeeded without any problem. A couple other questions we had, and this references an email from a while back, deals with SCTP BTL exclusivity. I will link the relevant message below and any advice would be appreciated: http://www.open-mpi.org/community/lists/devel/2007/11/2609.php Thanks. - -- Karol Mroz km...@cs.ubc.ca -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFHUKH7uoug78g/Mz8RAmuuAKCF2FHDkfwsv4G6Pc1f05Ya9CFHLwCfQJT1 UJb17w+fhxL6abtOwLKX4nE= =QSsm -----END PGP SIGNATURE-----
