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Subject: Re: [OMPI users] Network connection check
From: vipin kumar (vipinkumar41_at_[hidden])
Date: 2009-07-23 00:55:52


>
> Are you asking to find out this information before issuing "mpirun"? Open
> MPI does assume that the nodes you are trying to use are reachable.
>
>
 NO,

Scenario is a pair of processes are running one in "master" node say
"masterprocess" and one in "slave" node say "slaveprocess". When
"masterprocess" needs service of slave process, it sends message to
"slaveprocess" and "slaveprocess" serves its request. In case of Network
failure(by any means) "masterprocess" will keep trying to send message to
"slaveprocess" without knowing that it is not reachable. So how
"masterprocess" should finds out that "slaveprocess" can't be reached and
leave attempting to send messages till Connection is not up.

Thanks & Regards,

-- 
Vipin K.
Research Engineer,
C-DOTB, India