Search found 7 matches

by gvinios
Mon Oct 23, 2023 11:16 am
Forum: VTSTTools
Topic: NEB/ neb.dat (wrong energies) + INTERNAL ERROR
Replies: 8
Views: 113620

Re: NEB/ neb.dat (wrong energies)

Thank you once again for your willingness to help, Professor.

I will report what happened and how the problem was resolved, with the intention of helping others.

* I wasn't using the mixing values (AMIX, BMIX, etc).

* IALGO = 38 yields
internal ERROR SETYLM_AUG: 63 -66 1353 7

*IALGO = 48 yields ...
by gvinios
Sat Oct 21, 2023 1:27 pm
Forum: VTSTTools
Topic: NEB/ neb.dat (wrong energies) + INTERNAL ERROR
Replies: 8
Views: 113620

Re: NEB/ neb.dat (wrong energies)

Hey prof.

Returning after several successful NEB calculations :) and extensive efforts to resolve the issue shown in attachment -Please take a look. I found this thread https://www.vasp.at/forum/viewtopic.php?f=3&t=10370 where the links suggested by the admin are no longer available. Despite not ...
by gvinios
Mon Oct 09, 2023 10:36 pm
Forum: VTSTTools
Topic: NEB/ neb.dat (wrong energies) + INTERNAL ERROR
Replies: 8
Views: 113620

Re: NEB/ neb.dat (wrong energies)

Hi Prof,

I went through many threads, and I found one comment of yours that pointed me to what the problem could be.

Basically, the initial position was somehow relaxed with a different PREC setting compared to the final position. For the initial position, I accidentally used PREC = Accurate ...
by gvinios
Mon Oct 09, 2023 3:30 pm
Forum: VTSTTools
Topic: NEB/ neb.dat (wrong energies) + INTERNAL ERROR
Replies: 8
Views: 113620

Re: NEB/ neb.dat (wrong energies)

Thanks a lot for considering replying this thread, prof.

So, I have inserted the OUTCAR from the standard relaxation of the starting point already. Did you mean it or something else?

Taking the opportunity, is that a manual way of extracting the individual energies to find the energy barrier ...
by gvinios
Mon Oct 09, 2023 3:10 pm
Forum: VTSTTools
Topic: Negative energy. barrier
Replies: 3
Views: 77632

Re: Negative energy. barrier

[quote=graeme post_id=25813 time=1696863787 user_id=2]
This is usually due to having different computational settings for the endpoints as compared to the neb images.
[/quote]

Hey prof.

Could you please have a look at this thread?

https://theory.cm.utexas.edu/forum/view ... hp?t=15624

Please :)
by gvinios
Mon Oct 09, 2023 1:44 pm
Forum: VTSTTools
Topic: Negative energy. barrier
Replies: 3
Views: 77632

Re: Negative energy. barrier

I came across the same situation a few days ago. In my case, I redefined the reaction pathway (subdivided it) because I noticed that there were local minima between the starting and ending points.

Did you also use the script nebbarrier.pl to generate the image energies?
by gvinios
Mon Oct 09, 2023 4:55 am
Forum: VTSTTools
Topic: NEB/ neb.dat (wrong energies) + INTERNAL ERROR
Replies: 8
Views: 113620

NEB/ neb.dat (wrong energies) + INTERNAL ERROR

Hi everyone,

I'm new to VASP and have been trying to do NEB calculation. I was able to go over all steps, but ended up with weird energies. I'll start simple.. please have a look at what I found when used nebbarrier.pl

0 0.000000 0.000000 -0.002801 0
1 0.703065 -447.045935 -1.209352 1
2 1 ...