[mpich-discuss] Problem with MPI_Bcast

[Hisham Adel]

Hi,

Thanks all for your replies... I found the problem, for some reasons, which i 
don't know how this happened, I didn't find node10, node11,.. in the 
"/etc/hosts" file. I have modified it again and everything works well now.  

Thanks all for your reply.

Regards,
Hisham




________________________________
From: Gus Correa <gus at ldeo.columbia.edu>
To: Mpich Discuss <mpich-discuss at mcs.anl.gov>
Sent: Tue, December 14, 2010 6:46:56 PM
Subject: Re: [mpich-discuss] Problem with MPI_Bcast

Pavan Balaji wrote:
> 
> On Tue, 14 Dec 2010, Hisham Adel wrote:
>> Thanks for your fast reply. The program runs well when I have removed 
"node10"
>> and increased the number of processes.
>> Now, I don't know where is the problem with "node10". It has the same Linux
>> version, the same configuration and on the same network.
>> 
>> Do you have any ideas ?
> 
> Unfortunately, with the information we have, it's hard to tell what's wrong 
>with the node. Could be a hardware issue; could be a network configuration 
>issue. I don't really know.
> 
> You might be able to run some tests with just two nodes in the host file 
>(node00 and node10) and see what errors it throws. It gets harder to debug with 
>11 nodes. Also try doing an ssh and ping from node00 to node10, and node10 to 
>node00.
> 
> I'm just randomly throwing out things you can try here. Maybe something will 
>stick.
> 
>  -- Pavan
> 
Hi Hisham

Have you tried to reboot node10?
Sometimes it is all it takes.
A quick and dirty way to restore a node to a sane state.

My two cents,
Gus Correa
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