ppa imaginary energy

Concerns issues with computing quasiparticle corrections to the DFT eigenvalues - i.e., the self-energy within the GW approximation (-g n), or considering the Hartree-Fock exchange only (-x)

Moderators: Davide Sangalli, andrea.ferretti, myrta gruning, andrea marini, Daniele Varsano

samaneh
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Joined: Tue Jan 21, 2014 9:03 am

Re: ppa imaginary energy

Post by samaneh » Wed Nov 25, 2015 10:44 am

Dear Daniele,

I did it again and I got that NAN again
I attached the files .

Best
S. Ataei
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S. Ataei, PhD student at University of Tehran, Iran.

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Daniele Varsano
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Re: ppa imaginary energy

Post by Daniele Varsano » Thu Nov 26, 2015 11:38 am

Dear Samaneh,
we need to reproduce your error. Could you do the following:
1) Reproduce the error lowering the parameter of your calculation in order to have a few minute run for debug purpose and post the relative input file
2) post also the qe input files together with the pseudopotential you used.

Daniele
Dr. Daniele Varsano
S3-CNR Institute of Nanoscience and MaX Center, Italy
MaX - Materials design at the Exascale
http://www.nano.cnr.it
http://www.max-centre.eu/

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Davide Sangalli
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Re: ppa imaginary energy

Post by Davide Sangalli » Sun Nov 29, 2015 6:17 pm

Dear Samaneh,
are you using the yambo version you got from svn ?

In that case doing "svn up" you should get the fix to the file src/common/FREQUENCIES_coarse_grid.F, otherwise please fix it as explained in the forum post you saw:
"viewtopic.php?f=14&t=1105&hilit=Bose&si ... 0&start=10"

If you still get NaN after that, please post the PWscf input files with the pseudo-potentials and we will try to reproduce the erro.

Best,
D.
Davide Sangalli, PhD
CNR-ISM, Division of Ultrafast Processes in Materials (FLASHit) and MaX Centre
https://sites.google.com/view/davidesangalli
http://www.max-centre.eu/

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