Re: [OMPI users] Open MPI performance on Amazon Cloud

2010-03-19 Thread Damien Hocking
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

Re: [OMPI users] Open MPI performance on Amazon Cloud

2010-03-19 Thread 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

Re: [OMPI users] Open MPI performance on Amazon Cloud

2010-03-19 Thread Jeff Squyres
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

Re: [OMPI users] Open MPI performance on Amazon Cloud

2010-03-12 Thread amjad ali
Dear Hammad, Can you please have a RUN with "sufficiently Larger Problem Instance"? Then see what happens!! Sufficientmay be 10 times greater than that you used. best regards, Amjad Ali. On Fri, Mar 12, 2010 at 3:10 AM, Hammad Siddiqi wrote: > Dear All, > Is this the correct forum for sendi

Re: [OMPI users] Open MPI performance on Amazon Cloud

2010-03-12 Thread Hammad Siddiqi
Dear All, Is this the correct forum for sending these kind of emails. please let me know if there is some other mailing list. Thank Best Regards, Hammad Siddiqi System Administrator, Centre for High Performance Scientific Computing, School of Electrical Engineering and Computer Science, National Un