Afraid I'm no OpenSSH expert, but it sounds like there is an issue with its configuration. Check out the OpenSSH config options to see if something fits.

I did a quick search and found this, as an example:

http://mah.everybody.org/docs/ssh

Note the need to run ssh-agent to cache login credentials.

On Feb 6, 2012, at 5:05 PM, James Torossian wrote:

Hi all,
I am trying to setup Open-MPI across two Windows 7 machines with UAC disabled ……
 
Cygwin with OpenSSH is installed, and I can successfully ssh to each machine without entry of username and password:
 
JimT@JimT-PC ~
$ ssh NanoOneQuad
Last login: Tue Feb  7 01:42:02 2012 from jimt-pc
 
JimT@NanoOneQuad ~
$
 
Regardless of this, mpirun insists on asking for a username and password; then asks to save credentials, but if selected, responds with not implemented. If saving credentials is not selected, then I can see that the task starts on the other machine (in task manager) and that the task runs to completion OK:
 
JimT@JimT-PC ~
$ mpirun -H NanoOneQuad ipconfig.exe
connecting to NanoOneQuad
username:JimT
password:**************
Save Credential?(Y/N) y
[JimT-PC:03784] This feature hasn't been implemented yet.
 
JimT@JimT-PC ~
$ mpirun -H NanoOneQuad ipconfig.exe
connecting to NanoOneQuad
username:JimT
password:**************
Save Credential?(Y/N) n
 
JimT@JimT-PC ~
$
 
Please let me know what I have missed. I have gone through the FAQs and have rebuilt the windows version but can’t seem to get past this.
 
Thanks and best regards,
Jim
 
_______________________________________________
users mailing list
users@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users