> OMPI doesn't do anything relative to the .ssh directory, or what key > is used for ssh authentication. > > Afraid that is one you have to solve at the system level :-/ ^ In that case, where and how does OMPI call ssh?
ssh has a '-i' option which can be used to specify the id_rsa file. /If/ ssh is called in a script (or if there's a way to pass ssh args into OMPI), then I can just use that ssh option. thanks