A few people have looked at EC2 for this lately. This one's a good read.
http://insidehpc.com/2009/08/03/comparing-hpc-cluster-amazons-ec2-nas-benchmarks-linpack/
There was another paper published too, if I can find it again I'll post
the link.
Damien
On 19/03/2010 9:17 PM, Joshua Bernstein
Hi Hammad,
Before we launched the Penguin Computing On-Demand service we
conducted several tests that compared the latencies of EC2 with a
traditional HPC type setup (much like we have with our POD service). I
have a whole suite of tests that I'd be happy to share with you, but
to sum it
Yes, it is -- sometimes we get so caught up in other issues that user emails
slip through the cracks. Sorry about that!
I actually have little experience with EC2 -- other than knowing that it works,
I don't know much about the performance that you can extract from it. I have
heard issues abo
Thank you again for your kind replies.
With your help I'm tantalisingly close to getting it working.
I have successfully implemented MPI_COMM_SPAWN into my program, and it launches
the external program. Returning from the external program however is proving
problematic, which I think may be lin
My hosts have infiniband and ethernet interfaces. I found the solution to my
problem. I use --mca btl ^tcp. So My program never runs on ethernet
interfaces.Thank you.
From: r...@open-mpi.org
List-Post: users@lists.open-mpi.org
Date: Sun, 14 Mar 2010 16:58:39 -0600
To: us...@open-mpi.org
Subject
Did you configure OMPI with --enable-debug? You should do this so that more
diagnostic output is available.
You can also add the following to your cmd line to get more info:
--debug --debug-daemons --leave-session-attached
Something is likely blocking proper launch of the daemons and processes
The processes are running on the remote nodes but they don't give the
response to the origin node. I don't know why.
With the option --mca btl_base_verbose 30, I have the same problems and it
doesn't show any message.
Thanks
> On Wed, Mar 17, 2010 at 1:41 PM, Jeff Squyres wrote:
>> On Mar 17, 20
