Hi,

it could be worth signing messages with name and affiliation.

There are many checks in QE at runtime, that print quite self-explanatory
errors, the one you mention is an example, it seems.

The reason why pw.x seems to complain is that you're trying to parallelize
the code using -ndiag, but the number of bands to be computed is
small and so this parallelization cannot be done.
Remove the -ndiag or make it to be followed by 1 and it should work.

I suggest to read documentation and follow the tutorials, before using
features you're not yet aware of.
Giovanni

-- 

Giovanni Cantele, PhD
CNR-SPIN
c/o Dipartimento di Fisica
Universita' di Napoli "Federico II"
Complesso Universitario M. S. Angelo - Ed. 6
Via Cintia, I-80126, Napoli, Italy
e-mail: [email protected] <[email protected]>
Phone: +39 081 676910
Skype contact: giocan74

ResearcherID: http://www.researcherid.com/rid/A-1951-2009
Web page: https://sites.google.com/view/giovanni-cantele/home


Il giorno ven 16 feb 2024 alle ore 13:00 wangzongyi via users <
[email protected]> ha scritto:

> Dear all
> Thank you for your help, after revise my scf.in file, I am facing another
> problem, the program told me that I have too few bands:
> Error in routine check_para_diag (4):
>      Too few bands for required ndiag
> what should I do.
> This is my Si.scf.in file
> &CONTROL
> calculation='scf',
> restart_mode='from_scratch',
> prefix='si',
> pseudo_dir='./'
> outdir='../tmp/',
> /
> &SYSTEM
> ibrav=2,
> celldm(1)=10.2625,
> nat=2,
> ntyp=1,
> ecutwfc=60.0,
> ecutrho=720.0,
> /
> &ELECTRONS
> mixing_beta=0.7,
> conv_thr=1d-8
> /
> ATOMIC_SPECIES
> Si 28.0855 Si.pbe-n-rrkjus_psl.1.0.0.UPF
> ATOMIC_POSITIONS alat
> Si  0.00  0.00  0.00
> Si  0.25  0.25  0.25
> K_POINTS automatic
> 4 4 4 1 1 1
>
> Thank you for your help
> _______________________________________________
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_______________________________________________
The Quantum ESPRESSO community stands by the Ukrainian
people and expresses its concerns about the devastating
effects that the Russian military offensive has on their
country and on the free and peaceful scientific, cultural,
and economic cooperation amongst peoples
_______________________________________________
Quantum ESPRESSO is supported by MaX (www.max-centre.eu)
users mailing list [email protected]
https://lists.quantum-espresso.org/mailman/listinfo/users

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