[mpich-discuss] Error with more than 5 nodes

[Prashantha Hebbar]

Hi Friends,

 

I have come across  an error with mpdboot -n 6 -f mpd.hosts command.
Following is the error message

 

mpdboot_mlscubl3-desktop (handle_mpd_output 407): failed to handshake with
mpd on mlscubl11-desktop; recvd output={}

 

With mpdboot -n 5 -f mpd.hosts everything works fine. I also checked to
verify whether it is a problem with node, mlscubl11-desktop by keeping
mlscubl11-desktop alone in the mpd.hosts and executing mpdboot -n 2 -f
mpd.hosts. That  works fine. I have 15 nodes with me wherein
mlscubl3-desktop is master. There is no ssh problem. Somehow I have to
cluster all the 15. I tried in all the combination of nodes. But mpdboot
with more than 5 nodes not working properly.

 

Now my doubt is whether it is limitation of MPICH2 or linux (Ubuntu).  Can
you please help me to solve this?

 

Thanking you in anticipation.

Regards,

Prashantha


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