[Pw_forum] Low speed

[Ngoc Linh Nguyen]

mohsen modaresi wrote:
> Dear Developers and users,
> I run a SCF calculation with 71 atoms on a camputer with 8 cpu and 8GB 
> RAM, i expect it run in some minutes, But it take 3 hours to run. Is 
> it regular?
I thinks we don't have any reference table for time calculation of QE. 
With this kind of question I think, basing on my experience, with your 
model and your computer system it is regular.

However, a scf calculation estimated right or wrong should be depended 
on if it converges or not, it does not depend mainly on calculating time

Hope this help.

Linh
  
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