I noticed a strange behaviour in 1.5.4 which seems to me as a bug. I'm
trying to launch 4 ranks on 2 nodes. If I add "-npernode 3 -bynode"
parameters mpirun freezes on start. When I tried with the "-display-map"
parameter it shows the following:
./mpirun --np 4 --host mir1,mir2 -npernode 3 -display-map -bynode ./hello
======================== JOB MAP ========================
Data for node: mir1 Num procs: 3
Process OMPI jobid: [42759,1] Process rank: 0
Process OMPI jobid: [42759,1] Process rank: 2
Process OMPI jobid: [42759,1] *Process rank: 4*
Data for node: mir2 Num procs: 1
Process OMPI jobid: [42759,1] Process rank: 1
Which seems as a problem since there supposed to be no rank #4 as np=4.
I've also tried with trunk. The application also freezes but does not show
the map of ranks.
Could you please assist if this is a bug or I'm doing something improperly?