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Subject: Re: [OMPI users] mpirun hang
From: Christophe Spaggiari (christophe.spaggiari_at_[hidden])
Date: 2008-09-17 08:46:05

Thank you very much. That was it. I didn't know that by default it was any
firewall running on the default Yellow Dog Linux installations since nothing
was asked about this issue during the installation.
You really saved my day George.

On Wed, Sep 17, 2008 at 2:24 PM, George Bosilca <bosilca_at_[hidden]>wrote:

> Christophe,
> Looks like a firewall problem. Please check the mailing list archives for
> the proper fix.
> Thanks,
> george.
> On Sep 17, 2008, at 6:53 AM, Christophe Spaggiari wrote:
> Hi,
>> I am new to MPI and try to get my Open MPI environment up and running. I
>> have two machines Alpha and Beta, on which I have successfully installed
>> Open MPI in /usr/local/openmpi. I have made the ssh setting to not have to
>> enter password manually (using rsa keys), and I have modified the .rc files
>> to get the right path and right LD_LIBRARY_PATH when login using ssh on both
>> machines.
>> In order to check if my installation was working I have started "mpirun
>> hostname" on Alpha and it is working just fine.
>> I have tested as well "mpirun hostname" on Beta and it is working fine
>> too.
>> I have tested "ssh beta env" to check that my setting are correct and it
>> is working as expected.
>> BUT when I am running "mpirun -host beta hostname" from Alpha nothing
>> happens. After several minutes I have to kill the "mpirun" process with
>> Ctrl-C (two times). Does any of you run into similar problem and could tell
>> me what I am doing wrong ? It seems that each local installation are working
>> fine but I can not start tasks on other nodes.
>> The interesting point is that when I run a "ps" on Beta I can see that a
>> "orted" process is started (and stay in process list) for each of my try to
>> run "mpirun" command from Alpha. So somehow Beta gets the command to start
>> orted and does it but then, nothing happens .......
>> I have been browsing the users list for similar issues and I found one guy
>> describing exactly the same problem but it was no answer to his post.
>> Not sure if this is relevant but Alpha and Beta are Sony PS3 machines
>> running Yellow Dog Linux 6.1
>> Thanks in advance for your help.
>> Regards,
>> Chris
>> _______________________________________________
>> users mailing list
>> users_at_[hidden]
> _______________________________________________
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