Looks like a bug - can address next week. Very unusual use of npernode...


Sent from my iPad

On Oct 4, 2011, at 4:55 AM, Andrew Senin <andrew.senin@itseez.com> wrote:

Hi all, 

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?

Regards, 
Andrew Senin


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