[QE-users] error of band-structure calculations with tpiba_c

Lorenzo Paulatto lorenzo.paulatto at cnrs.fr
Fri Sep 9 12:28:29 CEST 2022


It looks like there is something wrong with your planewaves grid:

      G-vector sticks info
      --------------------
      sticks:   dense  smooth     PW     G-vecs:    dense smooth      PW
      Sum        4197       0      0 925237        0       0

Which may be caused, or linked to, the fact that your k-points 
coordinates are NaN

         k(    1) = (         NaN         NaN         NaN), wk =   0.5000000
         k(    2) = (         NaN         NaN         NaN), wk =   0.5000000

This may result from a very strange input, or from some 
incompatibilities from the mathematical libraries you have used to 
compile the code. I see you are using "tpiba_c" but you did not specify 
the weight of the kpoint, which mean you generated a grid of zero 
points. Please fix your input:

tpiba_c :

    Used for band-structure contour plots.
    k-points are in units of  2/pi/a./  nks must be 3.
    3 k-points k_0, k_1, and k_2 specify a rectangle
    in reciprocal space of vertices k_0, k_1, k_2,
    k_1 + k_2 - k_0: k_0 + \alpha (k_1-k_0)+
    \beta (k_2-k_0) with 0 <\alpha,\beta < 1.
    The code produces a uniform mesh n1 x n2
    k points in this rectangle. n1 and n2 are
    the weights of k_1 and k_2. The weight of k_0
    is not used.

                 

hth

On 09/09/2022 04:04, Jibiao Li wrote:
>
> Dear Giovanni,
>
> I used command:  pw.x <top.nscf.inp> top.nscf.out&  The complete 
> outcome file contains:
>
>      Program PWSCF v.6.8 starts on  9Sep2022 at 10: 0:51
>
>      This program is part of the open-source Quantum ESPRESSO suite
>      for quantum simulation of materials; please cite
>          "P. Giannozzi et al., J. Phys.:Condens. Matter 21 395502 (2009);
>          "P. Giannozzi et al., J. Phys.:Condens. Matter 29 465901 (2017);
>          "P. Giannozzi et al., J. Chem. Phys. 152 154105 (2020);
>           URL http://www.quantum-espresso.org",
>      in publications or presentations arising from this work. More 
> details at
> http://www.quantum-espresso.org/quote
>
>      Parallel version (MPI), running on     1 processors
>
>      MPI processes distributed on     1 nodes
>      61896 MiB available memory on the printing compute node when the 
> environment starts
>
>      Waiting for input...
>      Reading input from standard input
>
>      Current dimensions of program PWSCF are:
>      Max number of different atomic species (ntypx) = 10
>      Max number of k-points (npk) =  40000
>      Max angular momentum in pseudopotentials (lmaxx) =  4
>
>      Atomic positions and unit cell read from directory:
>      ./top.save/
>      Atomic positions from file used, from input discarded
>
>      file O.pbe-n-kjpaw_psl.1.0.0.UPF: wavefunction(s)  2S 2P renormalized
>      file C.pbe-n-kjpaw_psl.1.0.0.UPF: wavefunction(s)  2S 2P renormalized
>      file Fe.pbe-spn-kjpaw_psl.1.0.0.UPF: wavefunction(s)  3P 3D 
> renormalized
>
>      IMPORTANT: XC functional enforced from input :
>      Exchange-correlation= VDW-DF
>                            (   1   4   4   0   1   0   0)
>      Any further DFT definition will be discarded
>      Please, verify this is what you really want
>
>
>      Subspace diagonalization in iterative solution of the eigenvalue 
> problem:
>      a serial algorithm will be used
>
>
>      G-vector sticks info
>      --------------------
>      sticks:   dense  smooth     PW     G-vecs:    dense smooth      PW
>      Sum        4197       0      0 925237        0       0
>
>      Using Slab Decomposition
>
>
>
>      bravais-lattice index     =            6
>      lattice parameter (alat)  =      10.8334  a.u.
>      unit-cell volume          =    5721.5014 (a.u.)^3
>      number of atoms/cell      =           26
>      number of atomic types    =            3
>      number of electrons       =       346.00
>      number of Kohn-Sham states=          208
>      kinetic-energy cutoff     =      49.0000  Ry
>      charge density cutoff     =     451.0000  Ry
>      Exchange-correlation= VDW-DF
>                            (   1   4   4   0   1   0   0)
>
>      celldm(1)=  10.833426  celldm(2)=   0.000000 celldm(3)=   4.500000
>      celldm(4)=   0.000000  celldm(5)=   0.000000 celldm(6)=   0.000000
>
>      crystal axes: (cart. coord. in units of alat)
>                a(1) = (   1.000000   0.000000   0.000000 )
>                a(2) = (   0.000000   1.000000   0.000000 )
>                a(3) = (   0.000000   0.000000   4.500000 )
>
>      reciprocal axes: (cart. coord. in units 2 pi/alat)
>                b(1) = (  1.000000  0.000000  0.000000 )
>                b(2) = (  0.000000  1.000000  0.000000 )
>                b(3) = (  0.000000  0.000000  0.222222 )
>
>
>      PseudoPot. # 1 for O  read from file:
>      /home/jibiaoli/pseudo/PAW/O.pbe-n-kjpaw_psl.1.0.0.UPF
>      MD5 check sum: e99d9cef9b487d1ca56f5b95ecd0fd7a
>      Pseudo is Projector augmented-wave + core cor, Zval = 6.0
>      Generated using "atomic" code by A. Dal Corso  v.6.3
>      Shape of augmentation charge: PSQ
>      Using radial grid of 1095 points,  4 beta functions with:
>                 l(1) =   0
>                 l(2) =   0
>                 l(3) =   1
>                 l(4) =   1
>      Q(r) pseudized with 0 coefficients
>
>
>      PseudoPot. # 2 for C  read from file:
>      /home/jibiaoli/pseudo/PAW/C.pbe-n-kjpaw_psl.1.0.0.UPF
>      MD5 check sum: 5f16ad9a65e90284d1d834d4ab3b0f7d
>      Pseudo is Projector augmented-wave + core cor, Zval = 4.0
>      Generated using "atomic" code by A. Dal Corso  v.6.3
>      Shape of augmentation charge: PSQ
>      Using radial grid of 1073 points,  4 beta functions with:
>                 l(1) =   0
>                 l(2) =   0
>                 l(3) =   1
>                 l(4) =   1
>      Q(r) pseudized with 0 coefficients
>
>
>      PseudoPot. # 3 for Fe read from file:
>      /home/jibiaoli/pseudo/PAW/Fe.pbe-spn-kjpaw_psl.1.0.0.UPF
>      MD5 check sum: fc81f059e5c5069939230b1155715ae8
>      Pseudo is Projector augmented-wave + core cor, Zval = 16.0
>      Generated using "atomic" code by A. Dal Corso  v.6.3
>      Shape of augmentation charge: PSQ
>      Using radial grid of 1191 points,  6 beta functions with:
>                 l(1) =   0
>                 l(2) =   0
>                 l(3) =   1
>                 l(4) =   1
>                 l(5) =   2
>                 l(6) =   2
>      Q(r) pseudized with 0 coefficients
>
>
>      atomic species   valence    mass     pseudopotential
>         O              6.00    15.99900     O ( 1.00)
>         C              4.00    12.01070     C ( 1.00)
>         Fe            16.00    55.85000     Fe( 1.00)
>
>      Starting magnetic structure
>      atomic species   magnetization
>         O           -0.100
>         C           -0.100
>         Fe           1.000
>
>       8 Sym. Ops. (no inversion) found
>
>
>
>    Cartesian axes
>
>      site n.     atom                  positions (alat units)
>          1           O   tau(   1) = (   0.4999998 0.4999998   
> 1.6399030  )
>          2           C   tau(   2) = (   0.4999998 0.4999998   
> 1.4373709  )
>          3           C   tau(   3) = (   0.2497501 0.2497501   
> 1.0766269  )
>          4           C   tau(   4) = (   0.2497501 0.7502495   
> 1.0766269  )
>          5           C   tau(   5) = (   0.7502495 0.2497501   
> 1.0766269  )
>          6           C   tau(   6) = (   0.7502495 0.7502495   
> 1.0766269  )
>          7           Fe  tau(   7) = (   0.0000000 0.0000000   
> 1.0525468  )
>          8           Fe  tau(   8) = (   0.0000000 0.4999998   
> 1.0497436  )
>          9           Fe  tau(   9) = (   0.4999998 0.0000000   
> 1.0497436  )
>         10           Fe  tau(  10) = (   0.4999998 0.4999998   
> 1.1232096  )
>         11           Fe  tau(  11) = (   0.2536398 0.2536398   
> 0.7553170  )
>         12           Fe  tau(  12) = (   0.2536398 0.7463598   
> 0.7553170  )
>         13           Fe  tau(  13) = (   0.7463598 0.2536398   
> 0.7553170  )
>         14           Fe  tau(  14) = (   0.7463598 0.7463598   
> 0.7553170  )
>         15           Fe  tau(  15) = (   0.0000000 0.0000000   
> 0.4999998  )
>         16           Fe  tau(  16) = (   0.0000000 0.4999998   
> 0.4999998  )
>         17           Fe  tau(  17) = (   0.4999998 0.0000000   
> 0.4999998  )
>         18           Fe  tau(  18) = (   0.4999998 0.4999998   
> 0.4999998  )
>         19           Fe  tau(  19) = (   0.2499999 0.2499999   
> 0.2499999  )
>         20           Fe  tau(  20) = (   0.2499999 0.7499997   
> 0.2499999  )
>         21           Fe  tau(  21) = (   0.7499997 0.2499999   
> 0.2499999  )
>         22           Fe  tau(  22) = (   0.7499997 0.7499997   
> 0.2499999  )
>         23           Fe  tau(  23) = (   0.0000000 0.0000000   
> 0.0000000  )
>         24           Fe  tau(  24) = (   0.0000000 0.4999998   
> 0.0000000  )
>         25           Fe  tau(  25) = (   0.4999998 0.0000000   
> 0.0000000  )
>         26           Fe  tau(  26) = (   0.4999998 0.4999998   
> 0.0000000  )
>
>      number of k points=     2  Methfessel-Paxton smearing, width 
> (Ry)=  0.0200
>                        cart. coord. in units 2pi/alat
>         k(    1) = (         NaN         NaN         NaN), wk =   
> 0.5000000
>         k(    2) = (         NaN         NaN         NaN), wk =   
> 0.5000000
>
>      Dense  grid:   925237 G-vectors     FFT dimensions: ( 75,  75, 360)
>
>      Smooth grid:        0 G-vectors     FFT dimensions: ( 1,   1,   1)
>
>      Estimated max dynamical RAM per process >       3.58 GB
>
>  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>      Error in routine allocate_fft (1):
>      wrong ngms
>  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>
> stopping ...
>
>
>
> When I used command: mpirun -np 2 pw.x <top.nscf.inp> top.nscf.out&
>
> The terminal gave me the error below
>  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>      Error in routine  fft_type_set (6):
>   there are processes with no planes. Use pencil decomposition (-pd 
> .true.)
>  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>
>      stopping ...
> Abort(6) on node 1 (rank 1 in comm 0): application called 
> MPI_Abort(MPI_COMM_WORLD, 6) - process 1
>
>
> The compete out file is shown below
>      Program PWSCF v.6.8 starts on  8Sep2022 at 17:10:37
>
>      This program is part of the open-source Quantum ESPRESSO suite
>      for quantum simulation of materials; please cite
>          "P. Giannozzi et al., J. Phys.:Condens. Matter 21 395502 (2009);
>          "P. Giannozzi et al., J. Phys.:Condens. Matter 29 465901 (2017);
>          "P. Giannozzi et al., J. Chem. Phys. 152 154105 (2020);
>           URL http://www.quantum-espresso.org",
>      in publications or presentations arising from this work. More 
> details at
> http://www.quantum-espresso.org/quote
>
>      Parallel version (MPI), running on     2 processors
>
>      MPI processes distributed on     1 nodes
>      R & G space division:  proc/nbgrp/npool/nimage =       2
>      61852 MiB available memory on the printing compute node when the 
> environment starts
>
>      Waiting for input...
>      Reading input from standard input
>
>      Current dimensions of program PWSCF are:
>      Max number of different atomic species (ntypx) = 10
>      Max number of k-points (npk) =  40000
>      Max angular momentum in pseudopotentials (lmaxx) =  4
>
>      Atomic positions and unit cell read from directory:
>      ./top.save/
>      Atomic positions from file used, from input discarded
>
>      file O.pbe-n-kjpaw_psl.1.0.0.UPF: wavefunction(s)  2S 2P renormalized
>      file C.pbe-n-kjpaw_psl.1.0.0.UPF: wavefunction(s)  2S 2P renormalized
>      file Fe.pbe-spn-kjpaw_psl.1.0.0.UPF: wavefunction(s) 3P 3D 
> renormalized
>
>      IMPORTANT: XC functional enforced from input :
>      Exchange-correlation= VDW-DF
>                            (   1   4   4   0   1   0   0)
>      Any further DFT definition will be discarded
>      Please, verify this is what you really want
>
>
>      Subspace diagonalization in iterative solution of the eigenvalue 
> problem:
>      a serial algorithm will be used
>
> (nothing else)
> ------------------------------------------------------------------------
>
> Jibiao Li
>
> Department of Materials Science and Engineering
>
> Yangtze Normal University
>
> Juxian Avenue 16, Fuling, Chongqing, China 408100
>
>
> ------------------ Original ------------------
> *From:* "Quantum ESPRESSO users Forum" <giovanni.cantele at spin.cnr.it>;
> *Date:* Thu, Sep 8, 2022 05:55 PM
> *To:* "Quantum ESPRESSO users Forum"<users at lists.quantum-espresso.org>;
> *Subject:* Re: [QE-users] error of band-structure calculations with 
> tpiba_c
>
> The partial outcome in the first case is not enough, because one wants 
> to check what the executable is reading from input. What looks weird is:
> i) from a previous input it seems you specify three k-points, but I 
> can see only two instead
> 2) in the two k-points I see there are NaN, this is not possible
> 3) even more impossible,
>      Smooth grid:        0 G-vectors     FFT dimensions: (   1,   1,   1)
>
> So either the input contains something really wrong or I can only 
> guess your executable is badly compiled or has for no other reason I 
> can guess serious problems.
> 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: giovanni.cantele at spin.cnr.it <mailto:giovanni.cantele at spin.cnr.it>
> 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 gio 8 set 2022 alle ore 11:13 Jibiao Li 
> <jibiaoli at foxmail.com> ha scritto:
>
>
>     Hi, Giovanni
>
>     I used command:  pw.x <top.nscf.inp> top.nscf.out&
>
>     The partial outcome of the out file is shown below,
>
>     ...
>          number of k points=     2  Methfessel-Paxton smearing, width
>     (Ry)=  0.0200
>                            cart. coord. in units 2pi/alat
>             k(    1) = (         NaN         NaN NaN), wk =   0.5000000
>             k(    2) = (         NaN         NaN NaN), wk =   0.5000000
>
>          Dense  grid:   925237 G-vectors     FFT dimensions: (  75, 
>     75, 360)
>
>          Smooth grid:        0 G-vectors     FFT dimensions: (   1,  
>     1,   1)
>
>          Estimated max dynamical RAM per process >       3.58 GB
>
>      %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>          Error in routine allocate_fft (1):
>          wrong ngms
>      %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>
>          stopping ...
>
>
>     When I used command: mpirun -np 2 pw.x <top.nscf.inp> top.nscf.out&
>
>     The terminal gave me the error below
>      %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>          Error in routine  fft_type_set (6):
>       there are processes with no planes. Use pencil decomposition
>     (-pd .true.)
>      %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>
>          stopping ...
>     Abort(6) on node 1 (rank 1 in comm 0): application called
>     MPI_Abort(MPI_COMM_WORLD, 6) - process 1
>
>
>     The compete out file is shown below
>          Program PWSCF v.6.8 starts on  8Sep2022 at 17:10:37
>
>          This program is part of the open-source Quantum ESPRESSO suite
>          for quantum simulation of materials; please cite
>              "P. Giannozzi et al., J. Phys.:Condens. Matter 21 395502
>     (2009);
>              "P. Giannozzi et al., J. Phys.:Condens. Matter 29 465901
>     (2017);
>              "P. Giannozzi et al., J. Chem. Phys. 152 154105 (2020);
>               URL http://www.quantum-espresso.org",
>          in publications or presentations arising from this work. More
>     details at
>     http://www.quantum-espresso.org/quote
>
>          Parallel version (MPI), running on     2 processors
>
>          MPI processes distributed on     1 nodes
>          R & G space division: proc/nbgrp/npool/nimage =       2
>          61852 MiB available memory on the printing compute node when
>     the environment starts
>
>          Waiting for input...
>          Reading input from standard input
>
>          Current dimensions of program PWSCF are:
>          Max number of different atomic species (ntypx) = 10
>          Max number of k-points (npk) =  40000
>          Max angular momentum in pseudopotentials (lmaxx) =  4
>
>          Atomic positions and unit cell read from directory:
>          ./top.save/
>          Atomic positions from file used, from input discarded
>
>          file O.pbe-n-kjpaw_psl.1.0.0.UPF: wavefunction(s)  2S 2P
>     renormalized
>          file C.pbe-n-kjpaw_psl.1.0.0.UPF: wavefunction(s)  2S 2P
>     renormalized
>          file Fe.pbe-spn-kjpaw_psl.1.0.0.UPF: wavefunction(s)  3P 3D
>     renormalized
>
>          IMPORTANT: XC functional enforced from input :
>          Exchange-correlation= VDW-DF
>                                (   1   4   4   0   1   0 0)
>          Any further DFT definition will be discarded
>          Please, verify this is what you really want
>
>
>          Subspace diagonalization in iterative solution of the
>     eigenvalue problem:
>          a serial algorithm will be used
>
>     (nothing else)
>
>     ------------------ Original ------------------
>     *From:* "Quantum ESPRESSO users Forum" <giovanni.cantele at spin.cnr.it>;
>     *Date:* Thu, Sep 8, 2022 04:49 PM
>     *To:* "Quantum ESPRESSO users
>     Forum"<users at lists.quantum-espresso.org>;
>     *Subject:* Re: [QE-users] error of band-structure calculations
>     with tpiba_c
>
>     May I see the command and/or the submission script you use to
>     launch pw.x? Also, please provide the full pw.x output header
>     (printed before the error message), if any.
>     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: giovanni.cantele at spin.cnr.it
>     <mailto:giovanni.cantele at spin.cnr.it>
>     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 gio 8 set 2022 alle ore 10:21 Jibiao Li
>     <jibiaoli at foxmail.com> ha scritto:
>
>         Dear Giovanni,
>
>         >That error should mean that you're using more cpus than the dimension of >the FFT grid along the z direction. Reducing the number of
>         cpus should fix >the error. The error below remains even if I
>         used only one cpu. Any idea?
>         %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>         Error in routine fft_type_set (6): there are processes with no
>         planes. Use pencil decomposition (-pd .true.)
>         %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>
>
>         ------------------------------------------------------------------------
>
>         Jibiao Li
>
>         Department of Materials Science and Engineering
>
>         Yangtze Normal University
>
>         Juxian Avenue 16, Fuling, Chongqing, China 408100
>
>         Scopus Research ID: 54944118000
>         <https://www.scopus.com/authid/detail.uri?authorId=54944118000>
>
>         Web of Science Research ID: F-1905-2016
>         <https://publons.com/researcher/2283103/jibiao-li/>
>
>         >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: giovanni.cant... at spin.cnr.it  <giovanni.cant... at spin.cnr.it>
>         >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 mer 7 set 2022 alle ore 10:32 Jibiao Li <jibia... at foxmail.com> ha
>         scritto:
>
>         >
>         > Dear Giovanni,
>         >
>         > When I set all weights to 1.0, the calculation gave the error below
>         >
>         > K_POINTS tpiba_c
>         > 3
>         > 0.0  0.0  0.0 1.0
>         > 0.5  0.0  0.0 1.0
>         > 0.0  0.5  0.0 1.0
>         >
>         >
>         >  
>         > %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>         >      Error in routine  fft_type_set (6):
>         >   there are processes with no planes. Use pencil decomposition (-pd .true.)
>         >
>         >  
>         > %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>         >
>         > Any idea to remove this error?
>         > ------------------------------
>         >
>         > Jibiao Li
>         >
>         > Department of Materials Science and Engineering
>         >
>         > Yangtze Normal University
>         >
>         > Juxian Avenue 16, Fuling, Chongqing, China 408100
>         >
>         > ------------------ Original ------------------
>         > *From:*  "Quantum ESPRESSO users Forum" <giovanni.cant... at spin.cnr.it>;
>         > *Date:*  Wed, Sep 7, 2022 04:19 PM
>         > *To:*  "Quantum ESPRESSO users Forum"<users at lists.quantum-espresso.org>;
>         > *Subject:*  Re: [QE-users] error of band-structure calculations with
>         > tpiba_c
>         >
>         > Dear Jibiao Li,
>         >
>         > I'm not very sure but I think that in specifying the k points in any
>         > format weights are mandatory even if not used.
>         >
>         > As specified in the documentation
>         > https://www.quantum-espresso.org/Doc/INPUT_PW.html#idm1514
>         > In a non-scf calculation, weights do not affect the results.
>         > If you just need eigenvalues and eigenvectors (for instance,
>         > for a band-structure plot), weights can be set to any value
>         > (for instance all equal to 1).
>         >
>         > So, it is understood that you can set all weights to 1.0 or any other
>         > value for band structure calculations, but you must
>         > specify some value.
>         >
>         > 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: giovanni.cant... at spin.cnr.it  <giovanni.cant... at spin.cnr.it>
>         > 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 mer 7 set 2022 alle ore 09:03 Jibiao Li <jibia... at foxmail.com>
>         > ha scritto:
>         >
>         >> Dear All,
>         >>
>         >> I am trying to do calculations for band-structure contour plots by using 
>         >> tpiba_c,
>         >> but the calculation stopped and give an error below:
>         >>
>         >>
>         >>
>         >> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>         >>   t
>         >> ask #         9     from card_kpoints : error #         1
>         >>       end of file while reading tpiba k points
>         >>
>         >>  
>         >> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>         >>
>         >> Something wrong with my input format below?
>         >>
>         >> K_POINTS tpiba_c
>         >> 3
>         >> 0.0  0.0  0.0
>         >> 0.5  0.0  0.0
>         >> 0.0  0.5  0.0
>         >>
>         >> I look forward to receiving your solution.
>         >>
>         >>
>         >> ------------------------------
>         >>
>         >> Jibiao Li
>         >>
>         >> Department of Materials Science and Engineering
>         >>
>         >> Yangtze Normal University
>         >>
>         >> Juxian Avenue 16, Fuling, Chongqing, China 408100
>         >>
>         >> Scopus Research ID: 54944118000
>         >> <https://www.scopus.com/authid/detail.uri?authorId=54944118000>
>         >>
>         >> Web of Science Research ID: F-1905-2016
>         >> <https://publons.com/researcher/2283103/jibiao-li/>
>         >>
>         >> &CONTROL
>         >>                 calculation = 'nscf' ,
>         >>                 restart_mode = 'from_scratch' ,
>         >>                       outdir = './' ,
>         >>                   pseudo_dir = '/home/jibiaoli/pseudo/PAW' ,
>         >>                       prefix = 'top' ,
>         >>                      tstress = .true. ,
>         >>                      tprnfor = .true. ,
>         >>  /
>         >>  &SYSTEM
>         >>                        ibrav = 6,
>         >>                    celldm(1) = 10.833426245,
>         >>                    celldm(3) = 4.5,
>         >>                          nat = 26,
>         >>                         ntyp = 3,
>         >>                      ecutwfc = 49 ,
>         >>                      ecutrho = 451 ,
>         >>                        nspin = 2,
>         >>    starting_magnetization(1) = -0.1,
>         >>    starting_magnetization(2) = -0.1,
>         >>    starting_magnetization(3) = 2.5,
>         >>                    input_dft = 'vdw-df' ,
>         >>                  occupations = 'smearing' ,
>         >>                      degauss = 0.02D0 ,
>         >>                     smearing = 'methfessel-paxton' ,
>         >>  /
>         >>  &ELECTRONS
>         >>             electron_maxstep = 299,
>         >>                  mixing_beta = 0.2D0 ,
>         >>              diagonalization = 'david' ,
>         >>  /
>         >> ATOMIC_SPECIES
>         >>     O   15.999  O.pbe-n-kjpaw_psl.1.0.0.UPF
>         >>     C   12.0107 C.pbe-n-kjpaw_psl.1.0.0.UPF
>         >>    Fe   55.85  Fe.pbe-spn-kjpaw_psl.1.0.0.UPF
>         >> ATOMIC_POSITIONS angstrom
>         >> O             2.8664000000        2.8664000000        9.4012394775
>         >> C             2.8664000000        2.8664000000        8.2401634402
>         >> C             1.4317679395        1.4317679395        6.1720891643
>         >> C             1.4317679395        4.3010320605        6.1720891643
>         >> C             4.3010320605        1.4317679395        6.1720891643
>         >> C             4.3010320605        4.3010320605        6.1720891643
>         >> Fe            0.0000000000        0.0000000000        6.0340426424
>         >> Fe            0.0000000000        2.8664000000        6.0179725127
>         >> Fe            2.8664000000        0.0000000000        6.0179725127
>         >> Fe            2.8664000000        2.8664000000        6.4391387456
>         >> Fe            1.4540668643        1.4540668643        4.3300831677
>         >> Fe            1.4540668643        4.2787331357        4.3300831677
>         >> Fe            4.2787331357        1.4540668643        4.3300831677
>         >> Fe            4.2787331357        4.2787331357        4.3300831677
>         >> Fe            0.0000000000        0.0000000000        2.8664000000    0
>         >> 0   0
>         >> Fe            0.0000000000        2.8664000000        2.8664000000    0
>         >> 0   0
>         >> Fe            2.8664000000        0.0000000000        2.8664000000    0
>         >> 0   0
>         >> Fe            2.8664000000        2.8664000000        2.8664000000    0
>         >> 0   0
>         >> Fe            1.4332000000        1.4332000000        1.4332000000    0
>         >> 0   0
>         >> Fe            1.4332000000        4.2996000000        1.4332000000    0
>         >> 0   0
>         >> Fe            4.2996000000        1.4332000000        1.4332000000    0
>         >> 0   0
>         >> Fe            4.2996000000        4.2996000000        1.4332000000    0
>         >> 0   0
>         >> Fe            0.0000000000        0.0000000000        0.0000000000    0
>         >> 0   0
>         >> Fe            0.0000000000        2.8664000000        0.0000000000    0
>         >> 0   0
>         >> Fe            2.8664000000        0.0000000000        0.0000000000    0
>         >> 0   0
>         >> Fe            2.8664000000        2.8664000000        0.0000000000    0
>         >> 0   0
>         >> K_POINTS tpiba_c
>         >> 3
>         >> 0.0  0.0  0.0
>         >> 0.5  0.0  0.0
>         >> 0.0  0.5  0.0
>         >>
>
>         ------------------------------------------------------------------------
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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
>     <http://www.max-centre.eu>)
>     users mailing list users at lists.quantum-espresso.org
>     https://lists.quantum-espresso.org/mailman/listinfo/users
>
>
> _______________________________________________
> 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 listusers at lists.quantum-espresso.org
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-- 
Dr. Lorenzo Paulatto
IdR @ IMPMC - CNRS UMR 7590 & Sorbonne Université
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