On Sep 7, 2011, at 7:38 AM, Blosch, Edwin L wrote:

The mpirun command is invoked when the userís group is Ďset groupí to group 650.  When the rank 0 process creates files, they have group ownership 650.  But the userís login group is group 1040. The child processes that get started on other nodes run with group 1040, and the files they create have group ownership 1040.
Is there a way to tell mpirun to start the child processes with the same uid and gid as the rank 0 process?

I'm afraid not - never came up before. Could be done, but probably not right away. What version are you using?

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