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

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

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

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

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

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

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

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

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

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

[OMPI users] Open MPI performance on Amazon Cloud

Dear All, I am facing very wierd results of OpenMPI 1.4.1 on Amazon EC2. I have used Small Instance and and High CPU medium instance for benchmarking latency and bandwidth. The OpenMPI was configured with the default options. when the code is run in the cluster mode the latency and bandwidth of