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Subject: Re: [OMPI users] problems with MPI_Loockup_name
From: Ralph Castain (rhc_at_[hidden])
Date: 2009-03-16 11:47:33


Ah - you are quite correct. I had forgotten that option is coming in
1.3.1, and wasn't in 1.3.0.

Glad you found the other solution!

Ralph

On Mar 16, 2009, at 9:44 AM, Marcia Cristina Cera wrote:

> Hi Ralph,
>
> Helps a lot!
> But the option "--report-uri" is unable to mpirun. After some
> searches in OpenMPI lists I found a way to run:
>
> 1) ompi-server -d --report-uri urifile & -----> (must be always
> running)
> 2) mpirun -ompi-server file:urifile -np 1 publish-test
> 3) mpirun -ompi-server file:urifile -np 1 connect-test
>
> Thank you for the links.
> Márcia.
>
> On Mon, Mar 16, 2009 at 3:28 PM, Ralph Castain <rhc_at_[hidden]> wrote:
> Hi Marcia
>
> You have to tell the process doing the lookup the connection info
> for the server that is hosting the published info. Otherwise, OMPI
> defaults to looking for it on its own mpirun, where it won't be
> found in this case.
>
> Here is what you need to do (described in "man mpirun"):
>
> 1. mpirun -np 1 --report-uri uri-file publish-test
>
> 2. mpirun -np 1 --ompi-server file:uri-file connect-test
>
>
> Hope that helps
> Ralph
>
>
>
> On Mar 16, 2009, at 7:50 AM, Marcia Cristina Cera wrote:
>
> Hi,
>
> I am using the OpenMPI version 1.3 downloaded directly from the site.
>
> I want to establish a client/server connection among two local
> processes (in the same machine).
> I wrote a simple publisher combining MPI_Open_port /
> MPI_Publish_name / MPI_Comm_accept and a connector with
> MPI_Lookup_name / MPI_Comm_connect as can be seen in attachment.
> An error of Invalid name argument (also in attachment) is reached
> in MPI_Lookup_name, but I was execute the same test with LAM/MPI
> and it works well.
>
> I did not find references to this error in OpenMPI lists.
> Please, someone may help me with this problem?
>
> Thank you in advance!
> Márcia Cristina Cera.
>
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