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Strange problem with nebef.pl/nebspline.pl

Posted: Tue Oct 01, 2019 3:32 pm
by alex.pozdev
Hello everyone,

I am running CI-NEB calculations on formation of methanol from CH3O and H on a surface of supported Cu. Normally I check now and then the run with the nebef.pl script to see the forces and the energies of the images. This time however nebef.pl produces a really weirs output, where all the forces are zero:
0 0.000000 -413.254300 0.000000
1 0.000000 -413.383900 -0.129600
2 0.000000 -413.101200 0.153100
3 0.000000 -411.066600 2.187700
4 0.000000 -411.305400 1.948900
5 0.000000 -411.364100 1.890200

Running nebspline.pl script also produces an error:
Illegal division by zero at .../vtstscripts-935/nebspline.pl line 70

I have checked the forum for this error, and although it has been encountered before, neither of the possible solutions worked for me.

Now I am not sure whether it is a problem with the scripts (doubtfully) or there is something wrong with my calculations (more likely), so I am attaching my files as well.

Really looking for any help,

Thank you,

Alex

Re: Strange problem with nebef.pl/nebspline.pl

Posted: Tue Oct 01, 2019 11:00 pm
by graeme
Can you attach a copy of the completed run?

Re: Strange problem with nebef.pl/nebspline.pl

Posted: Wed Oct 02, 2019 4:05 am
by alex.pozdev
I do not have a completed run yet. At the moment I have a run with around 100 steps. Would that be ok or better wait till it ends?

Thank you

Re: Strange problem with nebef.pl/nebspline.pl

Posted: Wed Oct 02, 2019 12:41 pm
by graeme
The current run would be fine.

Re: Strange problem with nebef.pl/nebspline.pl

Posted: Wed Oct 02, 2019 2:10 pm
by alex.pozdev
Here it is.

Re: Strange problem with nebef.pl/nebspline.pl

Posted: Wed Oct 02, 2019 2:52 pm
by graeme
You don't have our VTSTcode linked into your vasp binary.

Re: Strange problem with nebef.pl/nebspline.pl

Posted: Wed Oct 02, 2019 4:50 pm
by alex.pozdev
Dear graeme,

Thank you so much for your time and your answer.