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Subject: Re: [OMPI users] How to Read the Rank from the MPI_TASK
From: Ralph Castain (rhc_at_[hidden])
Date: 2013-05-10 23:26:08


You mean a good MPI book? There are a lot of good ones out there - just search Amazon for "MPI programming"

On May 10, 2013, at 1:55 PM, deepak mehta <godeepakm_at_[hidden]> wrote:

> Hello Ralph,
> Your suggestion did the trick.
>
>
> >> I don't remember back to 1.4.3, but I think it was true even that long ago - we provide an environmental variable OMPI_COMM_WORLD_RANK that holds the rank of the process.
>
> Out of curiosity if I want to learn more about this topic in detail what would be a good place to start.
>
> Thank You for your help.
> Regards,
> Deepak
>
> From: godeepakm_at_[hidden]
> To: users_at_[hidden]
> Subject: How to Read the Rank from the MPI_TASK
> Date: Fri, 10 May 2013 20:39:34 +0000
>
> Hello All,
> I am new user to this mailing list and am trying to get familiar with mpi.
> I am using open mpi version 1.4.3
> I have a simple shell script that I have written
> The Shell Script that I have is as follows
> helloWorld.sh
> <code>
> #!/bin/bash
> echo " Hello World from Rank $rank"
> <code>
>
> The MPI Command that I am executing is as follows
> mpirun -np 3 helloWorld.sh
>
> What I want to know how what parameter do I need to pass from the mpirun command line so that I can read the rank for each task within my helloWorld Shell Script.
>
> Please excuse me if this is a duplicate entry. I have searched through all the forums and did not get the answer to my question.
> Thanks in advance for all your help.
> Regards,
> Deepak
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