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Subject: Re: [OMPI users] EXTERNAL: Re: Question on using rsh
From: Blosch, Edwin L (edwin.l.blosch_at_[hidden])
Date: 2011-09-13 12:36:28

Ralph, Reuti,

There are no typos, except in my post itself where I clipped out a few arguments.

I just repeated the exercise this morning, exactly like this:

<path>/bin/mpirun --machinefile mpihosts.dat -np 16 -mca orte_rsh_agent /usr/bin/rsh -x MPI_ENVIRONMENT=1 ./test_setup

It prompts for a password.

Then I hit the "up" arrow key to bring the command back, and I type over "orte" and replace with "plm":

<path>/bin/mpirun --machinefile mpihosts.dat -np 16 -mca plm_rsh_agent /usr/bin/rsh -x MPI_ENVIRONMENT=1 ./test_setup

This time it does not prompt for a password.

I can reverse the order, it doesn't change the behavior: the "orte" one prompts for a password but the "plm" one doesn't.

They must not be wholly identical, somehow. This is OpenMPI 1.4.3.


From: users-bounces_at_[hidden] [mailto:users-bounces_at_[hidden]] On Behalf Of Ralph Castain
Sent: Monday, September 12, 2011 7:43 PM
To: Open MPI Users
Subject: EXTERNAL: Re: [OMPI users] Question on using rsh

The two are synonyms for each other - they resolve to the identical variable, so there isn't anything different about them.

Not sure what the issue might be, but I would check for a typo - we don't check that mca params are spelled correctly, nor do we check for params that don't exist (e.g., because you spelled it wrong).

On Sep 12, 2011, at 3:03 PM, Blosch, Edwin L wrote:

I have a hello world program that runs without prompting for password with plm_rsh_agent but not with orte_rsh_agent, I mean it runs but only after prompting for a password:

<path>/bin/mpirun --machinefile mpihosts.dat -np 16 -mca plm_rsh_agent /usr/bin/rsh ./test_setup

Hello from process 2
Hello from process 5
Hello from process 12
Hello from process 6

Hello from process 0
Hello from process 4
Hello from process 3
Hello from process 7
Hello from process 14
Hello from process 8
Hello from process 1
Hello from process 9
Hello from process &n bsp; 10
Hello from process 11
Hello from process 13
Hello from process 15

<path>bin/mpirun --machinefile mpihosts.dat -np 16 -mca orte_rsh_agent /usr/bin/rsh./test_setup
bloscel_at_f8312's password:

I didn't notice anything about this in the FAQ except that orte_rsh_agent is newer than plm_rsh_agent. Did I miss some critical piece of information? Why do these options behave differently?

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