Multiple Processors

[Vitaly Kheyfets]

Hello,

Can you only run SimVasc on 4 processors?

Thanks,

Vitaly

[Adam Updegrove]

You can run the SimVascular solver on as many processors as there are available. The solver scales well, so this is an advantage of installing the solver on a cluster.

Thanks!

SimVascular Development Team

[Vitaly Kheyfets]

Perfect, thanks!

-Vitaly

[Rodrigo Romarowski]

Hi!

Do you guys have any experience in large clusters? I would like to run some simulations in a cluster with around 2k cores. Did you test strong and weak scalability of the svSolver and can give me any hint? do you know the N of cores where i will lose linear scaling?
In this case... do you suggest using CG, NS or GMRES as a linear solver? I am performing some tests in my local computer but maybe you can share with me your experience.

Thanks a lot!

Rodrigo

[Jongmin Seo]

Hi,

I have been testing performance of linear solvers in high performance clusters. Overall NS shows pretty good strong scalability (almost linear) up to 384 processors in a 8M mesh size problem. A weak scaling study shows that NS works fine up to 160 processors and the computing time increases after using 320 processors. I can share detailed test results, so please send me an email to jmseo.eng@gmail.com. if you wish.

Jongmin

[Rodrigo Romarowski]

Thanks for the comment.

Do you have more details about the platform you make those tests? Was it Broadwell, KNL, Haswell?
In which computer? Did you try other linear solvers within the software?