[MPICH] MPICH2 ring breaking; three times in two days

[Rajeev Thakur]

Can you try upgrading to 1.0.3 and see if the problem goes away.
 
Rajeev


  _____  

From: owner-mpich-discuss at mcs.anl.gov
[mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Galton, Simon
Sent: Tuesday, June 27, 2006 8:34 AM
To: 'mpich-discuss at mcs.anl.gov'
Subject: [MPICH] MPICH2 ring breaking; three times in two days



Help! :) 

We've been seeing a problem where most of our nodes drop out of the MPICH2
ring; this has happened three times in the last two days.  It's not always
the same nodes, either :(

The syslog file on our head node shows the following error: 

(handle_rhs_challenge_response 1010): INVALID msg for rhs response msg=:{}:
from host=xxxxx 

xxxxx represents the various hosts which drop out of the ring. 

Could this be a misbehaving job? 

Help! :) 

I'm using mpich2-1.0.1 on RHEL3 

Simon 




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