Hi Tena
Answers inline.
Tena Sakai wrote:
Hi Gus,
Hence, I don't understand why the lack of symmetry in the
firewall protection.
Either vixen's is too loose, or dashen's is too tight, I'd risk to say.
Maybe dashen was installed later, just got whatever boilerplate firewall
that comes with Red
Hi Gus,
> Hence, I don't understand why the lack of symmetry in the
> firewall protection.
> Either vixen's is too loose, or dashen's is too tight, I'd risk to say.
> Maybe dashen was installed later, just got whatever boilerplate firewall
> that comes with RedHat, CentOS, Fedora.
> If there is a
Tena Sakai wrote:
Hi Kevin,
Thanks for your reply.
Dasher is physically located under my desk and vixen is in a
cecure data center.
does dasher have any network interfaces that vixen does not?
No, I don't think so.
Here is more definitive info:
[tsakai@dasher Rmpi]$ ifconfig
eth0 L
Hi Gus,
Thank you very much for your help and reply.
I agree with each and every point you make. I look forward to
the day I can write 'little How To.'
Regards,
Tena
On 2/14/11 1:47 PM, "Gus Correa" wrote:
> Hi Tena
>
> Answers inline.
> This is getting big!
>
> Tena Sakai wrote:
>> Hi Gus
Thank you, Jeff. That's good to know, but for now
I am going to stick to -app option. For this old
dog can't learn new tricks so fast.
Regards,
Tena
On 2/14/11 6:18 AM, "Jeff Squyres" wrote:
> On Feb 13, 2011, at 10:54 PM, Tena Sakai wrote:
>
>> I have a file app.ac3, which looks like:
>>
Hi Jeff,
Many thanks for your reply / post.
> This is most telling to me (that you have a custom-built Linux)
I want to be clear that what I have is custom-built ami (Amazon
machine image), which is based on (run of the mill) centos 5.5.
> - pointer is invalid (which is not the case here)
> - pr
Hi Ashley,
You nailed it precisely. I turned dasher's firewall off per
your instruction and the problem went away.
[tsakai@dasher Rmpi]$ cat app.ac3
-H dasher.egcrc.org -np 1 hostname
-H dasher.egcrc.org -np 1 hostname
-H vixen.egcrc.org -np 1 hostname
-H vixen.egcrc.org -np 1 h
Hi Kevin,
Thanks for your reply.
Dasher is physically located under my desk and vixen is in a
cecure data center.
> does dasher have any network interfaces that vixen does not?
No, I don't think so.
Here is more definitive info:
[tsakai@dasher Rmpi]$ ifconfig
eth0 Link encap:Ethernet
Hi Tena
Ashley already answered the main point.
See more comments below.
Ashley Pittman wrote:
> On 14 Feb 2011, at 21:10, Tena Sakai wrote:
>> Regarding firewall, they are different:
>
>> I don't understand what they mean.
Well, IPtables syntax is kind of unfriendly.
The firewall in dasher see
Hi Tena
Answers inline.
This is getting big!
Tena Sakai wrote:
Hi Gus,
Thank you for your reply, comments, and suggestions.
EC2 does have support, but it is with extra charge and I am
discouraged to use it for budgetary reasons. Also, I have
heard that their support is a bit toward virtualiz
On 14 Feb 2011, at 21:10, Tena Sakai wrote:
> Regarding firewall, they are different:
>
> I don't understand what they mean.
vixen has a normal, or empty config and as such has no firewall, dasher has a
number of firewall rules configured which could easily be the cause of the
problem on thes
This probably shows my lack of understanding as to how OpenMPI
negotiates the connectivity between nodes when given a choice
of interfaces but anyway:
does dasher have any network interfaces that vixen does not?
The scenario I am imgaining would be that you ssh into dasher
from vixen using a "n
Hi Gus,
Thank you for your response.
I have verified that
1) /etc/hosts files on both machines vixen and dasher are identical
2) both machines have nothing but comments in hosts.allow and hosts.deny
Regarding firewall, they are different:
On vixen this how it looks:
[root@vixen ec2]# cat /etc
Tena Sakai wrote:
Hi Reuti,
a) can you ssh from dasher to vixen?
Yes, no problem.
[tsakai@dasher Rmpi]$
[tsakai@dasher Rmpi]$ hostname
dasher.egcrc.org
[tsakai@dasher Rmpi]$
[tsakai@dasher Rmpi]$ ssh vixen
Last login: Mon Feb 14 10:39:20 2011 from dasher.egcrc.org
[tsakai@vixen ~
Hi Reuti,
> a) can you ssh from dasher to vixen?
Yes, no problem.
[tsakai@dasher Rmpi]$
[tsakai@dasher Rmpi]$ hostname
dasher.egcrc.org
[tsakai@dasher Rmpi]$
[tsakai@dasher Rmpi]$ ssh vixen
Last login: Mon Feb 14 10:39:20 2011 from dasher.egcrc.org
[tsakai@vixen ~]$
[tsakai@vixen ~
What happens if you try to mpirun a non-MPI program like, "date" or "hostname"?
On Feb 11, 2011, at 6:14 AM, Marcela Castro León wrote:
> Excuse me. I forgot the attaching.
>
> 2011/2/11 Marcela Castro León
> Hello:
>
> I've the same version ob Ubuntu 10.04. The original version was Ubuntu Se
Thanks Jeremiah; I filed the following ticket about this:
https://svn.open-mpi.org/trac/ompi/ticket/2723
On Feb 10, 2011, at 3:24 PM, Jeremiah Willcock wrote:
> I forgot to mention that this was tested with 3 or 4 ranks, connected via TCP.
>
> -- Jeremiah Willcock
>
> On Thu, 10 Feb 2011,
Thanks Jeremiah; I've filed the following ticket about this:
https://svn.open-mpi.org/trac/ompi/ticket/2722
On Feb 10, 2011, at 3:50 PM, Jeremiah Willcock wrote:
> Running the following program on two nodes connected by Infiniband and OMPI
> 1.5.1 (openib BTL), one task per node:
>
> #in
Thank you. Ashley, for clarification between sudo and su.
I live in a sphere of ignorance, but I feel I am slightly
enlightened.
Regards,
Tena
On 2/14/11 1:39 AM, "Ashley Pittman" wrote:
>
> "sudo" and "su" are two similar commands for doing nearly identical things,
> you should be running o
On Feb 13, 2011, at 10:54 PM, Tena Sakai wrote:
> I have a file app.ac3, which looks like:
> [tsakai@vixen Rmpi]$ cat app.ac3
> -H dasher.egcrc.org -np 1 hostname
> -H dasher.egcrc.org -np 1 hostname
> -H vixen.egcrc.org -np 1 hostname
> -H vixen.egcrc.org -np 1 hostname
Note that you
On Feb 13, 2011, at 2:37 PM, Tena Sakai wrote:
> Also, here is an idea I came up in my sleep that I want to check
> out. The ami I have been using is a centos 5.5, which I have built
> from ground up. EC2 has something called Amazon Linux ami. I
> don't know what distribution that is and I am s
This type of error message *usually* means that you haven't set your
LD_LIBRARY_PATH to point to the intel library. Further, this *usually* means
that you aren't sourcing the iccvars.sh file in your shell startup file on
remote nodes (or iccvars.csh, depending on your shell).
Remember that the
Hi,
Am 14.02.2011 um 04:54 schrieb Tena Sakai:
> I have digressed and started downward descent...
>
> I was trying to make a simple and clear case. Everything
> I write in this very mail is about local machines. There
> is no virtual machines involved. I am talking about two
> machines, vixen
"sudo" and "su" are two similar commands for doing nearly identical things, you
should be running one or the other but there is no need to run both. "sudo -s"
is probably the command you should have used. It's a very common mistake.
sudo is a command for allowing you to run commands as anothe
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