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Subject: Re: [OMPI users] Cannot run a job with more than 3 nodes
From: Victor (victor.major_at_[hidden])
Date: 2014-03-12 03:26:50


I "fixed it" by finding the message regarding tree spawn in a thread from
November 2013. When I run the job with -mca plm_rsh_no_tree_spawn 1 the job
works over 4 nodes.

I cannot identify any errors in ssh key setup and since I am only using 4
nodes I am not concerned about somewhat slower launch speed. Is faster job
launch speed the only benefit of tree spawn?