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@open-mpi.org [mailto:users-bounces@open-mpi.org] 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@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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