[ofiwg] noob questions

[James Swaro]

If you still managed to get the TCP provider after compiling it out, I’d do a quick check with ldd to see that you are getting the library you expected to get.

-- Jim


From: ofiwg <ofiwg-bounces at lists.openfabrics.org> on behalf of Don Fry <DFry at lightfleet.com>
Date: Wednesday, November 13, 2019 at 12:54 PM
To: "ofiwg at lists.openfabrics.org" <ofiwg at lists.openfabrics.org>
Subject: [ofiwg] noob questions


I have written a libfabric provider for our hardware and it passes all the fabtests I expect it to (dgram and msg).  I am trying to run some MPI tests using libfabrics under openmpi (4.0.2).  When I run a simple ping-pong test using mpirun it sends and receives the messages using the tcp/ip protocol.  It does call my fi_getinfo routine, but doesn't use my provider send/receive routines.  I have rebuilt the libfabric library disabling sockets, then again --disable-tcp, then --disable-udp, and fi_info reports fewer and fewer providers until it only lists my provider, but each time I run the mpi test, it still uses the ip protocol to exchange messages.



When I configured openmpi I specified --with-libfabric=/usr/local/ and the libfabric library is being loaded and executed.



I am probably doing something obviously wrong, but I don't know enough about MPI or maybe libfabric, so need some help. If this is the wrong list, redirect me.

​

Any suggestions?

Don
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