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<div class="moz-cite-prefix">Hi Reza,<br>
Unless I missed them, I don't see any examples of error messages
in the past messages. What error message are you getting? <br>
<br>
Are you trying to use Infiniband with Openstack? My understanding
is that the RDMA Infiniband stuff that OpenMPI uses currently does
not work with virtualization -- otherwise we'd be using it :) .<br>
<br>
-Dave<br>
<br>
On 15/05/2013 7:38 AM, Reza Bakhshayeshi wrote:<br>
</div>
<blockquote
cite="mid:CAMGoRG1djGUV0gUv5N9jV6xqQgSGVKbd5j24NZYEUZTCPV7EhA@mail.gmail.com"
type="cite">
<div dir="ltr">
<div class="gmail_default"
style="font-family:tahoma,sans-serif;color:rgb(0,0,102)">Thank
Lorin for your reply<br>
<br>
</div>
<div class="gmail_default"
style="font-family:tahoma,sans-serif;color:rgb(0,0,102)">
Yes, instances are able to ping/ssh each other.<br>
</div>
<div class="gmail_default"
style="font-family:tahoma,sans-serif;color:rgb(0,0,102)">I've
used either Open MPI and MPICH, as you know, they use ssh to
perform tasks.<br>
</div>
<div class="gmail_default"
style="font-family:tahoma,sans-serif;color:rgb(0,0,102)">even
I'm able to execute example programs, here is the output of
mpich cpi on two instances:<br>
<br>
localadmin@ubuntu-benchmark01:
<div class="gmail_default">
~$ mpiexec -f ./hosts2 -n 2 ./cpi<br>
Process 0 of 2 is on ubuntu-benchmark01<br>
Process 1 of 2 is on ubuntu-benchmark02<br>
pi is approximately 3.1415926544231318, Error is
0.0000000008333387<br>
wall clock time = 0.050358<br>
<br>
</div>
<div class="gmail_default">but HPCC is much more complex than
these ones.<br>
</div>
<div class="gmail_default">I can perform HPCC on a single
instance.<br>
</div>
<div class="gmail_default">I've setup everything similiar to
my virtual cluster, but here I think something prevent the
test.<br>
</div>
<div class="gmail_default">as soon as hpcc process start to
execute on the second instance, it killed unexpectedly.<br>
</div>
<br>
</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On 15 May 2013 17:51, Lorin Hochstein <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:lorin@nimbisservices.com" target="_blank">lorin@nimbisservices.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Reza:
<div><br>
</div>
<div>You should be able to run MPI programs across
OpenStack instances as long as your setup is configured
so that instances are allowed to communicate with each
other over the fixed IPs, and your security group
settings allow traffic across the ports that your MPI
implementation is using. </div>
<div><br>
</div>
<div>(OpenStack doesn't provide a distributed file system,
so if you need to do MPI-IO stuff you have to add the
shared file system part yourself)</div>
<div><br>
</div>
<div>Are you able to ping/ssh from one instance to another
on the fixed IPs?</div>
<div><br>
</div>
<div>Lorin</div>
<div><br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">
<div>
<div class="h5">On Wed, May 15, 2013 at 9:08 AM,
Reza Bakhshayeshi <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:reza.b2008@gmail.com"
target="_blank">reza.b2008@gmail.com</a>></span>
wrote:<br>
</div>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div class="h5">
<div dir="ltr">
<div
style="font-family:tahoma,sans-serif;color:rgb(0,0,102)">Hi
<br>
<br>
</div>
<div
style="font-family:tahoma,sans-serif;color:rgb(0,0,102)">
I want to perform a MPI program across the
instances. I've already done it on a
traditional and virtual cluster, so I'm
pretty sure about the healthiness of my
installation.<br>
</div>
<div
style="font-family:tahoma,sans-serif;color:rgb(0,0,102)">Unfortunately
I can't perform it on a cluster of OpenStack
instances.<br>
</div>
<div
style="font-family:tahoma,sans-serif;color:rgb(0,0,102)">
My MPI program is HPCC, it stops at the
begging of MPIRandomAccess.<br>
<br>
</div>
<div
style="font-family:tahoma,sans-serif;color:rgb(0,0,102)">I
would be so grateful if anyone had a similar
experience or can guess some possibilities
and solutions.<br>
<br>
</div>
<div
style="font-family:tahoma,sans-serif;color:rgb(0,0,102)">Regards,<br>
</div>
<div
style="font-family:tahoma,sans-serif;color:rgb(0,0,102)">Reza<br>
</div>
</div>
<br>
</div>
</div>
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<br>
</blockquote>
</div>
<span class="HOEnZb"><font color="#888888"><br>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr">Lorin Hochstein<br>
<div>Lead Architect - Cloud Services</div>
<div>Nimbis Services, Inc.</div>
<div>
<a moz-do-not-send="true"
href="http://www.nimbisservices.com"
target="_blank">www.nimbisservices.com</a></div>
</div>
</font></span></div>
</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
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