[mpich-discuss] Role of ssh tunnel for hydra

[Abu Naser]

Good Morning,


I am trying to understand the role of job launcher (e.g. ssh ) in MPICH. I have looked over the mpich design documents and hydra process management doc. But did not get the answer I am looking for. Would you please give the answer of my following question?


1. If hydra uses ssh as a job launcher for multiple machines, then are all communications done by hydra performed using ssh tunnel? In other words, if I configure ssh in port 22, then will all communication done by hydra with other machines use port 22?





Thank you.




Best Regards,

Abu Naser
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