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From: Jiri Barnat (xbarnat_at_[hidden])
Date: 2005-05-05 04:54:08


Hi all,

1) I would like to run a single computation that performs simultaneously
on computers in two different clusters. Unfortunately, computers in both
clusters are attached to local networks only, so they don't have
publically available IP addresses. Each cluster has an access point
instead, which is a computer that has two network devices and two IP
addresses, one local and one public. Is it possible to run such a
computation with LAM/MPI impirun and impi_server?

2) I tried to run computation through an impi_server only on those 2
cluster access points mentioned above. However, connection didn't succeed
because local IP addresses were used instead of the public ones. Is there
any way, like environment variable or hidden impirun/mpirun parameter,
that will allow to say which IP address should be anounced through
impi_server to the others?

Thanks a lot,
Jiri