[OMPI users] IB question (slightly off topic)

Hello all I have a question, that I do realize, is somewhat off topic to this list. But I do not know who to approach for an answer. Hopefully the community here will help me out. I know that Infiniband is a 'standard' interface (standardized by IETF? IEEE? or some similar body), much like Ethern

Re: [OMPI users] IB question (slightly off topic)

In my understanding, the standard is mainly for the hardware and misc stuff only. For example, mellanox and qlogic infiniband can use the same cables and switches. Iirc, they can use the same subnet manager and communicate via IPoIB. When performance matters, mellanox use ib verbs, and qlogic uses

Re: [OMPI users] Communication problem (on one node) when network interface is down

Also, loop back interface is somehow special. though all nodes do have the same ip 127.0.0.1, this interface cannot be used for inter node communication. On Saturday, March 12, 2016, Jeff Squyres (jsquyres) wrote: > It's set by default in btl_tcp_if_exclude (because in most cases, you *do* > wan

Re: [OMPI users] Error with MPI_Register_datarep

Hi Gilles, Le 16-03-10 23:14, Gilles Gouaillardet a écrit : Eric, my short answer is no. long answer is : - from MPI_Register_datarep() /* The io framework is only initialized lazily. If it hasn't already been initialized, do so now (note that MPI_FILE_OPEN and MPI_FILE_DE