Search found 52 matches
- Fri Jul 31, 2020 7:11 am
- Forum: VTSTTools
- Topic: EDWAV error only when using VTST (VASP 5.4.1)
- Replies: 4
- Views: 68689
Re: EDWAV error only when using VTST (VASP 5.4.1)
According to my experience, this is related to your compilation, and you should change another intel compiler.
- Mon Dec 03, 2018 9:11 am
- Forum: VTSTTools
- Topic: Convergence Problem
- Replies: 3
- Views: 54055
Re: Convergence Problem
Can you tell me how to accelerate my calculation? Which part of atoms should be fixed? And What is soft modes?
- Sun Dec 02, 2018 12:47 pm
- Forum: VTSTTools
- Topic: Convergence Problem
- Replies: 3
- Views: 54055
Re: Convergence Problem
Thanks very much, professor. You help me so much as before.
- Fri Nov 30, 2018 1:33 pm
- Forum: VTSTTools
- Topic: Convergence Problem
- Replies: 3
- Views: 54055
Convergence Problem
Hi Professor, I am working on a ferromagnetic system. Although it can converge to Ediff=-0.05, it can not converge to Ediffg=-0.01. I have tired several methods including changing its height of molecular, fixing some atoms, improving EDIFF criterion from 1E-5 to 1E-7 and decreasing POTIM from 0.3 to ...
- Fri Apr 20, 2018 2:22 am
- Forum: VTSTTools
- Topic: Does there exist the limit of convergence
- Replies: 6
- Views: 78155
Re: Does there exist the limit of convergence
Dear professor, Thank you very very much. But Is the criteria enough to calculate phonon? I find Ediffg is always very, very low as the online instruction shows. And, I have other two questions, can you give me some advice? Firstly, when i do geometrical optimization, should the ADDGRID = .TRUE. and ...
- Thu Apr 19, 2018 5:58 am
- Forum: VTSTTools
- Topic: Does there exist the limit of convergence
- Replies: 6
- Views: 78155
Re: Does there exist the limit of convergence
I want to calculate phonons 0.0.
- Thu Apr 19, 2018 3:06 am
- Forum: VTSTTools
- Topic: Does there exist the limit of convergence
- Replies: 6
- Views: 78155
Re: Does there exist the limit of convergence
Dear professor,
I firstly used IBRION=1, however, it did not work, whose energy changed by 0.1 meV as well (See attachment). Therefore, i turned to IBRION=2 to seek a lower state.
Then, how can i improve performance?
Thanks for suggestion.
Yidan Wei
I firstly used IBRION=1, however, it did not work, whose energy changed by 0.1 meV as well (See attachment). Therefore, i turned to IBRION=2 to seek a lower state.
Then, how can i improve performance?
Thanks for suggestion.
Yidan Wei
- Thu Apr 19, 2018 1:25 am
- Forum: VTSTTools
- Topic: Does there exist the limit of convergence
- Replies: 6
- Views: 78155
Re: Does there exist the limit of convergence
Here are input attachments.
- Thu Apr 19, 2018 1:08 am
- Forum: VTSTTools
- Topic: Does there exist the limit of convergence
- Replies: 6
- Views: 78155
Does there exist the limit of convergence
Dear professor, When i did a calculation, I found it was impossible to attain Ediffg=-0.0001. Many methods had been used to improve the performance, such IBRION=1/2 and improving EDIFF (See att[attachment=0]OUTCAR.rar[/attachment]achment). However, it seemed to exist the limit of converge. Can you ...
- Mon Apr 09, 2018 4:42 am
- Forum: VTSTTools
- Topic: the system is in chaos
- Replies: 8
- Views: 95864
Re: the system is in chaos
Thanks for your help. Does the number of images make it hard to converge?
- Sun Apr 08, 2018 10:56 am
- Forum: VTSTTools
- Topic: the system is in chaos
- Replies: 8
- Views: 95864
Re: the system is in chaos
here is the one with INVCURV=0.002. However, forces are still hard to converge......
- Sun Apr 08, 2018 2:00 am
- Forum: VTSTTools
- Topic: the system is in chaos
- Replies: 8
- Views: 95864
Re: the system is in chaos
Dear professor,
Thanks for your advice, systems converged with Ediffg=-1. Please see attachment (Ediffg=-1)
However, when i continued to calculate with Ediffg=-0.02. Please see attachment (Ediffg=-0.02). It was hard to converge. If i reduce the INVCURV parameter, can this criterion be reach?
Yidan Wei
Thanks for your advice, systems converged with Ediffg=-1. Please see attachment (Ediffg=-1)
However, when i continued to calculate with Ediffg=-0.02. Please see attachment (Ediffg=-0.02). It was hard to converge. If i reduce the INVCURV parameter, can this criterion be reach?
Yidan Wei
- Wed Apr 04, 2018 2:30 am
- Forum: VTSTTools
- Topic: the system is in chaos
- Replies: 8
- Views: 95864
Re: the system is in chaos
Dear professor, Thanks for your help. I follow your advice today,here are forces of images, $ ./nebef.pl 0 0.017443 -1139.628900 0.000000 1 1.104287 -1137.882100 1.746800 2 0.935224 -1137.566200 2.062700 3 0.810268 -1138.500700 1.128200 4 0.018839 -1139.870200 -0.241300 $ ./nebef.pl 0 0.017443 -1139 ...
- Tue Apr 03, 2018 12:27 pm
- Forum: VTSTTools
- Topic: question about monopole correcton
- Replies: 3
- Views: 54167
Re: question about monopole correcton
Dear professor,
I agree with you. However, i find the formation energy cannot converge to a ideal value, if the system are not cubic such as gallium oxide ,and charged with more than three electrons by 66% monopole correction (Lany‘s method). Is there anything wrong?
Yidan Wei
I agree with you. However, i find the formation energy cannot converge to a ideal value, if the system are not cubic such as gallium oxide ,and charged with more than three electrons by 66% monopole correction (Lany‘s method). Is there anything wrong?
Yidan Wei
- Tue Apr 03, 2018 2:11 am
- Forum: VTSTTools
- Topic: the system is in chaos
- Replies: 8
- Views: 95864
the system is in chaos
Dear professor,
I am doing the movement of silicon vacancy. However, it seems systems are chaos during the movement (see in 01 02 03) and forces are hard to converge. Can you help me to tell me the reason?
Thanks for your help and support.
Yidan Wei
I am doing the movement of silicon vacancy. However, it seems systems are chaos during the movement (see in 01 02 03) and forces are hard to converge. Can you help me to tell me the reason?
Thanks for your help and support.
Yidan Wei