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Subject: Re: [OMPI users] Communitcation between OpenMPI and ClusterTools
From: Alexander Shabarshin (ashabarshin_at_[hidden])
Date: 2008-07-29 14:19:14


>>> > One idea comes to mind is whether the two nodes are on the same
>>> > subnet? If they are not on the same subnet I think there is a bug in
>>> > which the TCP BTL will recuse itself from communications between the
>>> > two nodes.

>> you are right - subnets are different, but routes set up correctly and
>> everything like ping, ssh etc. are working OK between them

> But it isn't a routing problem but how the tcp btl in Open MPI decides
> which interface the nodes can communicate with (completely out of the
> hands of the TCP stack and lower).

Do you know when it can be fixed in official OpenMPI?
Is patch available or something?

Alexander Shabarshin