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From: Tom Clune (Thomas.L.Clune_at_[hidden])
Date: 2007-05-21 21:40:11


Executive summary: mpirun hangs when laptop is connected via cellular
modem.

Longer description: Under ordinary circumstances mpirun behaves as
expected on my OS X (Intel-duo) laptop. I only want to be using the
shared-memory mechanism - i.e. not sending packets across any
networks. When my laptop is connected to the internet via ethernet
or wireless (or not connected to the network at all) mpirun works
just fine, but if I connect via my nifty new cellular modem (Verizon
in case it matters), mpirun hangs at launch. I.e. my application
never even starts, and I have to use <ctrl-z> to interrupt to regain
a prompt. I'd like to be able to engage in other activities (mail,
cvs, skype) while executing mpi code in the background, so I'm really
hoping there is a simple switch to fix this.

I am launching with the command: "mpirun -np 2 ./gx". I have also
tried "mpirun --mca btl self,sm -np 2 ./gx" but that did not seem to
improve the situation.

I have attached the output from "ompi_info --all". The output does
not seem to depend on whether I am connected via the modem or not.

Thanks in advance.

- Tom






  • application/octet-stream attachment: withModem