Hmmm...well, first ensure you configured --enable-debug, and then add "-mca plm_base_verbose 10 --debug-daemons" to your mpirun cmd line. This will tell you what is happening during the launch.

On Apr 13, 2014, at 12:31 PM, Lubrano Francesco <> wrote:

Sorry for my late reply
I tried previously with passfrase and, in this particular case, this is not the problem: the error occurs also without asking password.
thus I think there is something else. 
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