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When virtual/diskless node is used on DRBL cluster using Open MPI version 1.8.4, the error occurs:

Error: unknown option "--hnp-topo-sig"

I guess something with the topology signature and looks new. Any suggestions? Typical command: 

mpirun --machinefile machines -np 4 mpi_hello 

machinefile: node1 slots = 4

Thank you in advance

Arnab Nandy
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feo
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1 Answers1

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This suggests that you are running different mpi versions on the nodes. You can confirm if this is the case by ssh'ing into each node and running 'mpirun --version'

Andy
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