On Sep 18, 2018, at 3:46 PM, Thananon Patinyasakdikul <tpati...@vols.utk.edu> wrote: > > I tested on our cluster (UTK). I will give a thumb up but I have some > comments. > > What I understand with 4.0. > - openib btl is disabled by default (can be turned on by mca)
It is disabled by default *for InfiniBand*. It is still enabled by default for RoCE and iWARP. > - pml ucx will be the default for infiniband hardware. > - btl uct is for one-sided but can also be used for two sided as well (needs > explicit mca). > > My question is, what if the user does not have UCX installed (but they have > infiniband hardware). The user will not have fast transport for their > hardware. As of my testing, this release will fall back to btl/tcp if I dont > specify the mca to use uct or force openib. Will this be a problem? This is a question for Mellanox. -- Jeff Squyres jsquy...@cisco.com _______________________________________________ devel mailing list devel@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/devel
