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Subject: Re: [OMPI users] Trouble with Sending Multiple messages to the Same Machine
From: Gus Correa (gus_at_[hidden])
Date: 2013-06-18 15:16:43

On 06/18/2013 01:14 PM, Claire Williams wrote:
> Hi guys ☺!
> I'm working with a simple "Hello, World" MPI program that has one master
> and is sending one message to each worker, receives a message back from
> each of the workers, and re-sends a new message. This unfortunately is
> not working :(. When the master only sends one message to each worker,
> and then receives it, it is working fine, but there are problems with
> sending more than one message to each worker. When it happens, it prints
> the error:
> [[401,1],0][../../../../../openmpi-1.6.3/ompi/mca/btl/tcp/btl_tcp_endpoint.c:638:mca_btl_tcp_endpoint_complete_connect]
> connect() to 192.168.X.X failed: No route to host (113)
> I'm wondering how I can go about fixing this. This program is running
> across multiple Linux nodes, by the way :).
> BTW, I'm a girl.

... and so was Ada.

"connect() to 192.168.X.X failed: No route to host"
suggests that your 192.168.X.X node cannot be
reached by a message sender.
Can you ping back and forth across every pair of nodes?