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From: Tim Prins (tprins_at_[hidden])
Date: 2007-05-18 08:07:47

Open MPI uses TCP, and does not use any fixed ports. We use whatever ports the
operating system gives us. At this time there is no way to specify what ports
to use.

Hope this helps,


On Friday 18 May 2007 05:19 am, Code Master wrote:
> I run my openmpi-based application in a multi-node cluster. There is also
> a sniffer computer (installed with wireshark) attached to a listener port
> on the switch to sniff any packets.
> However I would like to know the protocol (UDP or TCP) as well as the ports
> used by openmpi for interprocess communication so that wireshark can only
> capture these packets.
> Thanks!