[libfabric-users] Connectionless RDM question

Biddiscombe, John A. biddisco at cscs.ch
Mon Mar 6 12:59:05 PST 2017


    > When I receive a message on an RDM endpoint, the same endpoint handles
    > all peers, so now I don’t know how to get the address of the message
    > origin again – do I have to send the address with every rdma request so
    > that the receiver know where to read from?
    I didn't follow this.  Are you assuming that the local AV does or may not have the peer's address?
What I was trying to say is that I receive a message on node B. There may be many nodes in the job. Is there any info in the completion that tells me which node (A,C,D….Z) sent the message, or must I add my own address to each message? With EP_MSG I have an endpoint per connection, so I know which node sent me the message because I know which connection it came from, with EP_RDM I don’t. is there a way of retrieving the message sender from the receiving end?

Thanks again


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