Hi Jeff, Thank you for your quick response. I have another query, whether OpenMPI depends on Subnet manager/Subnet administration components of OFED ? (I mean, does OpenMPI require any services from Subnet manager/Subnet administration components in OFED without which it cannot run?)
Thanks & Regards, Ramu On Wed, Jun 1, 2011 at 6:28 PM, Jeff Squyres <jsquy...@cisco.com> wrote: > On Jun 1, 2011, at 8:49 AM, Bhargava Ramu Kavati wrote: > > > I am trying to run MPI applications using OpenMPI in OFED Cluster (over > IB). I am trying to find whether OpenMPI supports a transport interface > which is based on libibverbs layer in OFED (I mean, which does not use > connection manager in OFED) ? > > You're asking two different questions. > > 1. Does Open MPI use the native verbs interface in OFED? > > Yes. > > 2. Does Open MPI use one of the OFED connection managers? > > For IB, Open MPI can use the RDMA connection manager, but it does not have > to. It defaults to not using it (instead, it exchanges IB/verbs connection > data via TCP sockets). > > -- > Jeff Squyres > jsquy...@cisco.com > For corporate legal information go to: > http://www.cisco.com/web/about/doing_business/legal/cri/ > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
