Re: [QE-users] qe-6.4: problem with fs.x

2019-03-17 Thread Sylwia Golab
Dear Mr Giannozzi,


Thank you for you reply and sincerely apologize for the wrong guess I have 
made.The problem appears with qe-6.4 compiled with intel v. 11 as well as with 
the one comming from Parallel Studio 2017. It does not appear with qe-6.3 
compiled on the same machines. My example input files (problem appears also 
with other, more realistic inputs) are as follows:
scf.in:
 
calculation='scf'
restart_mode='from_scratch',
prefix='Nb',
pseudo_dir = '/home/student3/qe/qe-6.0/pseudo/',
outdir='./tmp_dir/'
 /
 
ibrav= 3, celldm(1)=6.250946058252, nat= 1, ntyp= 1,
ecutwfc =50,  ecutrho=600,
occupations="smearing", smearing="m-v", degauss=0.02
 /
 
conv_thr = 1.0e-11
mixing_beta = 0.7
 /
ATOMIC_SPECIES
 Nb  92.906   Nb.pbe-spn-rrkjus_psl.1.0.0.UPF
ATOMIC_POSITIONS
 Nb 0.00 0.00 0.00
K_POINTS automatic
4 4 4 0 0 0



dos.in
 
calculation='nscf'
restart_mode='from_scratch',
prefix='Nb',
pseudo_dir = '/home/student3/qe/qe-6.0/pseudo/',
outdir='./tmp_dir/'
 /
 
ibrav= 3, celldm(1)=6.250946058252, nat= 1, ntyp= 1,
ecutwfc =50,  ecutrho=600,
occupations="tetrahedra" 
 /
 
conv_thr = 1.0e-11
mixing_beta = 0.7
 /
ATOMIC_SPECIES
 Nb  92.906   Nb.pbe-spn-rrkjus_psl.1.0.0.UPF
ATOMIC_POSITIONS
 Nb 0.00 0.00 0.00
K_POINTS automatic
4 4 4 0 0 0



fs.in

outdir='./tmp_dir/'
prefix='Nb'
/



Firstly I am running mpirun -np 4 pw.x scf.out and I can grep Fermi energy from 
*xml files: 

[student3 qe4]$ grep fermi tmp_dir/*
tmp_dir/Nb.xml:  6.529259765371975e-1>


Then I am running mpirun -np 4 pw.xdos.out and now I cannot see the Fermi 
energy in *xml:
[student3 qe4]$ grep fermi tmp_dir/*(nothing appears)


But for sure the Fermi energy is computed in nscf cycle, because I can grep it 
from dos.out file:
[student3 qe4]$ grep Fermi *
dos.out: the Fermi energy is18.0671 ev
scf.out: the Fermi energy is17.7670 ev



As I mentioned before, after running mpirun -np 4 fs.xfs.out I see in the 
fs.out file the line:

1 bands found crossing Ef =0.00


When I changed the fermisurface.f90 such that it is reading Fermi energy from 
dos.out, then the program fs.x works very well (in agreement with the results 
obtained with qe-6.3).



I would like to thank you for your help in advance.
Best regards,
Sylwia




>>>  03/16/19 12:02 PM >>>

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Today's Topics:

   1. Negatively charged isolated molecule (Ernane de Freitas Martins)
   2. qe-6.4: problem with fs.x (Sylwia Golab)
   3. Re: Negatively charged isolated molecule (Giuseppe Mattioli)
   4. Re: Negatively charged isolated molecule
  (Ernane de Freitas Martins)
   5. Re: Negatively charged isolated molecule (Michal Krompiec)
   6. Re: How to calculate water molecule energy at large cell
  size? (Paolo Giannozzi)
   7. Re: qe-6.4: problem with fs.x (Paolo Giannozzi)
   8. Re: Negatively charged isolated molecule (Nattino Francesco)
   9. How can read constant velocity from input file when
  restart_mode= 'restart' (=?ISO-8859-1?B?THUgSGFpbGluIA==?=)


--

Message: 1
Date: Fri, 15 Mar 2019 13:54:49 -0300
From: Ernane de Freitas Martins 
To: users@lists.quantum-espresso.org
Subject: [QE-users] Negatively charged isolated molecule
Message-ID:

Content-Type: text/plain; charset="utf-8"

Hello,

I'm experiencing a problem to run a negatively charge molecule in quantum
espresso. The system is CO32-.

I try both vacuum and solvated (environ) calculations. The solvated one
works fine.

The problem is the calculation in vacuum. It never give the first ionic
step because the SCF accuracy never reaches the convence criterion.

I tried many different solutions (increase cutoffs and box size, use assume
isolated, decreasing and changing the mixing scheme and etc) and nothing
works.

The unique calculation that works fine for vacuum is the one with a box
size of 7.9 x 7.9 x 7.9 A. I really don't understand why it only works for
this specific box size.

I ran several other charged systems (+1, +2 and -1 total charge) and all of
them worked fine. The problem appears for -2 total charge in vacuum.

Would some of you kindly help me in this?

Cheers,

Dr. Ernane de Freitas Martins
Postdoctoral researcher
IF - USP
S?o Paulo, SP - Brazil
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[QE-users] qe-6.4: problem with fs.x

2019-03-15 Thread Sylwia Golab
Dear all,


the program fs.x in the qe-6.4 package gives me a messages:
 Message from routine pw_readschema_file:
 failed retrieving input info from xml file, please check it
and:

 1 bands found crossing Ef =0.00

so it cannot read Fermi energy.



As far as I understand, the problem is, that in the 6.4 version of qe the line

...
has been removed from tmp_dir/case.xml as well as from 
tmp_dir/case.save/data-file-schema.xml files.
Also I cannot find any other information about Fermi energy in these *.xml 
files.


Does anyone know how to workaround this problem?



Regards,Sylwia






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Re: [Pw_forum] Restart from previous run

2018-02-13 Thread Sylwia Golab
Dear Mr Paulatto and Mr Gianozzi,

thank you for your replies. 
In example with Force Theorem there are fully-relativistic nscf calculations 
based on  scalar-relativistic scf calculations. As far as I know, scf potential 
should be also calculated with SOC to get correct potential. Am I wrong?

I tried to use the 'filepot' parameter and it seems to work (e.g. I did not get 
errors), but with this parameter the scf cycle was only of 1 iteration shorter 
than "normal" scf cycle with SOC.

Best wishes,
Sylwia


--

Message: 7
Date: Wed, 7 Feb 2018 21:58:01 +0100
From: Paolo Giannozzi 
Subject: Re: [Pw_forum] Restart from previous run
To: PWSCF Forum 
Message-ID:

Content-Type: text/plain; charset="utf-8"

On Wed, Feb 7, 2018 at 8:13 PM, Lorenzo Paulatto  wrote:

> 1) when one want to include SOC. It would be great if one could start
> > from potential already calculated without SOC instead of potential of
> > free atoms. Is it possible just by mode 'restart'?
>
> no
>

It might be actually possible. Something similar is used in one of the
examples
(PP/examples/ForceTheorem_example)


> but increasing the number of k-points may increase the number of plane
> waves,

which would break reading the potential in G-space.
>

actually it is the charge density that is read. The G-vector grid for the
charge density
should not depend upon the number of k-points.

If I remember correctly the new file format writes in G-space, the old one
> used real

space, but I'm not 100% sure.
>

correct

Paolo
-- 
Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
Phone +39-0432-558216, fax +39-0432-558222
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[Pw_forum] Restart from previous run

2018-02-07 Thread Sylwia Golab
Dear users,

I wonder if it is possible to start scf calculations with pw.x from previous 
run? 
It is needed in at least two cases:
1) when one want to include SOC. It would be great if one could start from 
potential already calculated without SOC instead of potential of free atoms. Is 
it possible just by mode 'restart'?
2) when one want to start calculations on denser k-points grid. Here we cannot 
use 'restart' mode, because the number of K000... dirs is different. Is there 
an another way to start calculations eg. on grid consisted of  24^3 kpoints 
with potential calculated on 12^3? 

Thank you in advance,
Sylwia Golab
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[Pw_forum] fully-relativistic electron-phonon calculations with ph.x

2017-03-20 Thread Sylwia Golab
Dear all,

I wrote a message here a few days ago, but I didn't get reply, so I would like 
to ask again...

Is it possible to calculate fully-relativistic (with spin-orbit coupling) 
electron-phonon interactions with ph.x?

I have doubts, because in phonon.f90 file (I've attached piece of this file 
below) there is an information that electron-phonon calculations in 
fully-relativistic case are not implemented. On the other hand, when I tried to 
calculate electron-phonon interactions in Pb with SOC, I didn't get any 
error/warning.

Thanks in advance,
Sylwia


 !
  ! ... This is the main driver of the phonon code.
  ! ... It reads all the quantities calculated by pwscf, it
  ! ... checks if some recover file is present and determines
  ! ... which calculation needs to be done. Finally, it calls do_phonon
  ! ... that does the loop over the q points.
  ! ... Presently implemented:
  ! ... dynamical matrix (q/=0)   NC [4], US [4], PAW [4]
  ! ... dynamical matrix (q=0)NC [5], US [5], PAW [4]
  ! ... dielectric constant   NC [5], US [5], PAW [3]
  ! ... born effective chargesNC [5], US [5], PAW [3]
  ! ... polarizability (iu)   NC [2], US [2]
  ! ... electron-phonon   NC [3], US [3]
  ! ... electro-optic NC [1]
  ! ... raman tensor  NC [1]
  !
  ! NC = norm conserving pseudopotentials
  ! US = ultrasoft pseudopotentials
  ! PAW = projector augmented-wave
  ! [1] LDA, 
  ! [2] [1] + GGA, 
  ! [3] [2] + LSDA/sGGA, 
  ! [4] [3] + Spin-orbit/nonmagnetic,
  ! [5] [4] + Spin-orbit/magnetic (experimental when available)

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[Pw_forum] ph.x - electron-phonon + soc

2017-03-05 Thread Sylwia Golab
Hello,

in phonon.f90 file (I've attached piece of this file below) there is an 
information that electron-phonon calculations in fully-relativistic case are 
not implemented. On the other hand, when I tried to calculate electron-phonon 
interactions in Pb with SOC, I didn't get any error/warning. 

Thus is it possible to calculate fully-relativistic electron-phonon 
interactions with ph.x?

Thanks in advance,
Sylwia


 !
  ! ... This is the main driver of the phonon code.
  ! ... It reads all the quantities calculated by pwscf, it
  ! ... checks if some recover file is present and determines
  ! ... which calculation needs to be done. Finally, it calls do_phonon
  ! ... that does the loop over the q points.
  ! ... Presently implemented:
  ! ... dynamical matrix (q/=0)   NC [4], US [4], PAW [4]
  ! ... dynamical matrix (q=0)NC [5], US [5], PAW [4]
  ! ... dielectric constant   NC [5], US [5], PAW [3]
  ! ... born effective chargesNC [5], US [5], PAW [3]
  ! ... polarizability (iu)   NC [2], US [2]
  ! ... electron-phonon   NC [3], US [3]
  ! ... electro-optic NC [1]
  ! ... raman tensor  NC [1]
  !
  ! NC = norm conserving pseudopotentials
  ! US = ultrasoft pseudopotentials
  ! PAW = projector augmented-wave
  ! [1] LDA, 
  ! [2] [1] + GGA, 
  ! [3] [2] + LSDA/sGGA, 
  ! [4] [3] + Spin-orbit/nonmagnetic,
  ! [5] [4] + Spin-orbit/magnetic (experimental when available)

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