-
Notifications
You must be signed in to change notification settings - Fork 117
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Hard to reach convergence of some magnetic elements & abnormal slow of ABACUS scf
calculations
#4149
Comments
According to ABACUS收敛性问题解决手册. I try to reduce
For Ni-hcp, converges in all 4 combinations: For Mn-bcc, converges in all 4 combinations: For Fe-fcc, converges in 3 combinations, only fails to converge for For Cr-bcc, converges in all 4 combinations: For Co-bcc, converges in all 4 combinations: For Ce-bcc, converges for Actually, Ce-bcc is not hard converge. Instead, it is very easy to converge, you can see the drho: |
I have checked some examples calculated previous (ecutwfc is also 100 Ry).
|
Is average |
Yes, it seems abnormal for these two examples. I suspect the performance of c64_m128_cpu_H(64) is not good. I will try to use c32_m128_cpu (paratera) to test them. |
I use c32_m128_cpu (paratera) to run example v with 32 cores parallel, the first 3 scf steps are:
While the results in this issue are:
As we can see, the performance of c32_m128_cpu (paratera) is better than c64_m128_cpu_H(64). |
Update the first 3 SCF steps of Sm on c32_m128_cpu :
The results in this issue are:
|
Please see the latest V case which fails to finished the scf calculation due to |
The error of this test is related to the SchmitOrth in davidson:
Usually, it is because of the numerical instability. |
Details
Please see below attached cases as described by the title:
Hard to converge within consideration long period (most are magnetic):
Ni-hcp_uncov.zip
Mn-bcc_uncov.zip
Fe-fcc_uncov.zip
Cr-bcc_uncov.zip
Co-bcc_uncov.zip
Ce-bcc-uncov.zip
Reach convergence but takes hours (very slow for single electronic step):
Sm-rho_very_slow.zip
V-fcc_very_slow.zip
INPUT
:machine_type
:c64_m128_cpu_H
Task list for Issue attackers (only for developers)
The text was updated successfully, but these errors were encountered: