[Pw_forum] 答复: PW input ibrav = 0

Zhou Jianqiang jqzhou_hit at hotmail.com
Mon Feb 26 16:17:59 CET 2018


Dear Manjusha,


If the only difference between two inputs is only the way of defining the ibrav... and one input can run, but not the other...

I do not see why you need to know the details of pseudopotentials. They are both Norm conserve pseudopotentials:

###############################

<UPF version="2.0.1">
  <PP_INFO>
    Generated using FHI98PP, converted with fhi2upf.x v.5.0.2
    Author: unknown
    Generation date: unknown
    Pseudopotential type: SL
    Element: Ti
    Functional: PBE

    Suggested minimum cutoff for wavefunctions:   0. Ry
    Suggested minimum cutoff for charge density:   0. Ry
    The Pseudo was generated with a Non-Relativistic Calculation
    L component and cutoff radius for Local Potential:  3   0.0000

    Valence configuration:
    nl pn  l   occ       Rcut    Rcut US       E pseu
    3s  3  0  2.00      0.000      0.000     0.000000
    3p  3  1  6.00      0.000      0.000     0.000000
    3d  3  2  1.00      0.000      0.000     0.000000
    4s  4  0  0.00      0.000      0.000     0.000000

    Generation configuration: not available.
    Comment:
    OPIUM generated Ti potential
  </PP_INFO>
  <!--                               -->
  <!-- END OF HUMAN READABLE SECTION -->
  <!--                               -->
  <PP_HEADER generated="Generated using FHI98PP, converted with fhi2upf.x v.5.0.2"
             author="unknown"
             date="unknown"
             comment="OPIUM generated Ti potential"
             element="Ti"
             pseudo_type="SL"
             relativistic="no"
             is_ultrasoft="F"
             is_paw="F"
             is_coulomb="F"
             has_so="F"
             has_wfc="F"
             has_gipaw="F"
             paw_as_gipaw="F"
             core_correction="F"
             functional="PBE"
             z_valence="1.200000000000000E+001"
             total_psenergy="0.000000000000000E+000"

##############################################

<PP_INFO>
Generated using "atomic" code by A. Dal Corso  (espresso distribution)
Author: anonymous   Generation date:  8Jan2010
Se
    1        The Pseudo was generated with a Scalar-Relativistic Calculation
    1 2.1000000E+00    L component and cutoff radius for Local Potential
nl pn  l   occ               Rcut            Rcut US             E pseu
4S  1  0  2.00      2.10000000000      2.10000000000     -1.99042978710
4D  3  2  0.00      3.00000000000      3.00000000000     -0.25704515963
4P  2  1  3.00      2.10000000000      2.10000000000     -1.14575629398
</PP_INFO>


<PP_HEADER>
   0                   Version Number
  Se                   Element
   NC                  Norm - Conserving pseudopotential
    F                  Nonlinear Core Correction
 SLA  PZ   NOGX NOGC   PZ   Exchange-Correlation functional
    6.00000000000      Z valence
  -17.94436097843      Total energy
      0.000      0.000 Suggested cutoff for wfc and rho
    2                  Max angular momentum component
 1211                  Number of points in mesh
    3    2             Number of Wavefunctions, Number of Projectors
 Wavefunctions         nl  l   occ
                       4S  0  2.00
                       4P  1  3.00
                       4D  2  0.00
</PP_HEADER>




Here I also attached the report from a vimdiff between the two inputs. When  ibrav=4, it can run. but if I put ibrav=0, and put cell parameters by hand, it does not.


Many thanks!


Sky



--------------------------------------------------------------------------------------------------
Jianqiang (Sky) ZHOU
European Theoretical Spectroscopy Facility
Institut des NanoSciences de Paris (INSP)
Sorbonne Université - Case 840 - 4 place Jussieu
Barre 2232, étage 2, pièce 11
75005 PARIS
http://etsf.polytechnique.fr/People/Sky<https://theory.polytechnique.fr/squirrelmail/src/compose.php?send_to=gaelle.bruant%40polytechnique.edu>
tel : +33 (0)1 69 33 44 85


________________________________
发件人: pw_forum-bounces at pwscf.org <pw_forum-bounces at pwscf.org> 代表 Manjusha Chugh <chughmanjusha at gmail.com>
发送时间: 2018年2月26日 12:47
收件人: PWSCF Forum
主题: Re: [Pw_forum] PW input ibrav = 0

Hello

Can you please provide more details, like which pseudopotentials you are using, and also the ATOMIC POSITIONS?

Thank you

Manjusha
Postdoctoral Researcher
Department of Chemistry
University of Paderborn, Germany

On Mon, Feb 26, 2018 at 11:48 AM, Zhou Jianqiang <jqzhou_hit at hotmail.com<mailto:jqzhou_hit at hotmail.com>> wrote:

Dear Developers,


I have a problem when setting ibrav = 0. I did two tests and the only differences between the two are:

  1.
     ibrav=  4,
     celldm(1)=6.6893,
     celldm(3)=1.697,

2.
     ibrav =  0,
     A = 3.53600 ,

CELL_PARAMETERS {alat}
  0.866025403784439  -0.500000000000000   0.000000000000000
  0.000000000000000   1.000000000000000   0.000000000000000
  0.000000000000000   0.000000000000000   1.697963800904977

The first test can run, but the second run reports error message:

     Error in routine set_dft_from_name (1):
      conflicting values for icorr


Can someone tell me the reason? I am using " Program PWSCF v.6.2".

Many thanks!

Sky



--------------------------------------------------------------------------------------------------
Jianqiang (Sky) ZHOU
European Theoretical Spectroscopy Facility
Institut des NanoSciences de Paris (INSP)
Sorbonne Université - Case 840 - 4 place Jussieu
Barre 2232, étage 2, pièce 11
75005 PARIS
http://etsf.polytechnique.fr/People/Sky<https://theory.polytechnique.fr/squirrelmail/src/compose.php?send_to=gaelle.bruant%40polytechnique.edu>
tel : +33 (0)1 69 33 44 85<tel:+33%201%2069%2033%2044%2085>

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