Recently there was post about how to use ssh without a passwd for mpi applications. I tried the suggestions contained in the post but they did not work for me. Maybe I did not understand them well enough so I need a clarification. What I understood is that you copy the contents of the file:

.ssh/identity.pub to .ssh/authorized_keys for the same user on the remote machine. This is for the default rsa encryption set up by ssh-keygen.

Although there seems to be a conflict in the man page whether the default is rsa or rsa1. Where have I gone wrong?

ssh-keygen results in .ssh/identity.pub

ssh-keygen -t rsa results in .ssh/id_rsa.pub

ssh-keygen -t dsa results in .ssh/id_dsa.pub

Personally, I'd recommend dsa, in which case you'd copy .ssh/id_dsa.pub to the remote host/user's ~/.ssh/authorized_keys2 file.

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