>> 2) I am still not able to start a computation if I want local nodes to
>> participate. I quess this is because local nodes of one cluster cannot
>> access directly the access point of the other cluster where impi_server is
>> running. So my question is which computer in the cluster runs impid, which
>> represents IMPI client, and whether there is a way how to change it. (Note
>> that in my case impid must be run on the access-point of the cluster).
>
> It's run on the same node as rank 0 in MPI_COMM_WORLD. This will likely be
> on the first node listed in your boot schema file (that you lambooted with).
> So you probably want to make your access point node be the first one in the
> file, and then mpirun with the first process on that node (which is the
> default).
Is there a chance you will change this in the future? I would like to run
the computation on local cluster nodes only with impid running on access
point because the access point computer is usually loaded with other
stuff.
Jiri
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