Re: [QE-users] Quantum Espresso on Amazon Web Services

2018-09-06 Thread Minho Lee
Dear Uri argaman, Our service(materials square) is providing user interface and cloud HPC for QE. Our service uses the AWS EC2 instances(c5), and we’ve found that performance is similar or superior to the on-premise HPC. However, we also found that MPI performance dropped when we used

Re: [QE-users] Quantum Espresso on Amazon Web Services

2018-09-06 Thread Giovanni Pizzi
Hi, Give a look to this article: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/t2-credits-baseline-concepts.html It’s possible that you have one of these VMs, that on average deliver only a low (even only down to 5%) performance than the actual CPU performance (it might seem fast at the

[QE-users] Quantum Espresso on Amazon Web Services

2018-09-05 Thread Uri Argaman
Dear QE users and devalopers I'm running QE on Amazon Web Services (AWS) and I see that the run times are very bad compared to other systems that I use and I also encountered crashes which I cannot understand the reason for them. Does anyone work on AWS and know something about the performance and