[Pw_forum] bands.x

xiaochuan Ge ustc.scgyer at gmail.com
Mon Nov 10 22:05:36 CET 2014


Dear Manu,
I tried your input, I did not have the error you got. However, I got one
other problem:
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
     Error in routine punch_band_2d (1):
     Problems with k points
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
looking into the source code, this problem is caused by "n1*n2 /= nks_eff".
I don't understand very well the problem, but if I change the fourth line
of your Kpoints list:
0.000000000    0.000000000    0.500000000      1.000000000
into
0.500000000    0.000000000    0.500000000      1.000000000
this problem can be solved. The only difference I can observe in the output
by this change is that the number of kpoints changes from 7 to 8( it is not
6 as you indicate in the input, because symmetry may generate new kpoints).
Paolo, do you have any comment on this?


===================
Dr. Xiaochuan Ge (Giovanni)
Center for Functional Nanomaterials
Brookhaven national laboratory
===================

On 10 November 2014 15:11, Manu Hegde <mhegde at uwaterloo.ca> wrote:

> Hi Ge,
> Thanks for letting know about the mistake.
> Here is my input and output file, still it is showing the same error. I
> made a new input file, then I did the calculations. Still itis showing the
> same error. I have attached the files. Please have a look.
>
> Regards,
> Manu
>
>
>
> On Mon, Nov 10, 2014 at 10:10 AM, xiaochuan Ge <ustc.scgyer at gmail.com>
> wrote:
>
>> Dear Manu,
>> I think Paolo is right. You have to make two changes in your input for
>> bands.x:
>> 1. Make sure that prefix is consistent with your scf calculaiton,
>> 2. Make sure that outdir is consistent with your scf calculation.
>> I correct these two mistakes in your input, and I can get the code run
>> correctly.
>>
>> ===================
>> Dr. Xiaochuan Ge (Giovanni)
>> Center for Functional Nanomaterials
>> Brookhaven national laboratory
>> ===================
>>
>> On 10 November 2014 08:41, Paolo Giannozzi <paolo.giannozzi at uniud.it>
>> wrote:
>>
>>> "prefix" must be the same in the scf and in the "bands" run
>>>
>>> P.
>>>
>>> On Sun, 2014-11-09 at 18:02 -0500, Manu Hegde wrote:
>>> > HI Ge,
>>> >
>>> >
>>> > Here is my input file and Kpoints. Still it is showing the same error.
>>> >
>>> >
>>> > &CONTROL
>>> >                  calculation = 'scf' ,
>>> >                 restart_mode = 'from_scratch' ,
>>> >                       outdir = '/home/manu/espresso-5.1/bin/GaO_K/' ,
>>> >                   pseudo_dir = '/home/manu/espresso-5.1/pseudo/' ,
>>> >                       prefix = 'gafewband' ,
>>> >                    verbosity = 'default' ,
>>> >  /
>>> >  &SYSTEM
>>> >                        ibrav = 13,
>>> >                            A = 12.208 ,
>>> >                            B = 3.031 ,
>>> >                            C = 5.751 ,
>>> >                        cosAB = 0 ,
>>> >                        cosAC = -0.23 ,
>>> >                        cosBC = 0 ,
>>> >                          nat = 20,
>>> >                         ntyp = 2,
>>> >                      ecutwfc = 70 ,
>>> >                      ecutrho = 800 ,
>>> >                         nbnd = 90,
>>> >                  occupations = 'smearing' ,
>>> >                      degauss = 0.001 ,
>>> >                     smearing = 'gaussian' ,
>>> >  /
>>> >  &ELECTRONS
>>> >             electron_maxstep = 200,
>>> >                     conv_thr = 5.D-10 ,
>>> >                  startingpot = 'file' ,
>>> >                  startingwfc = 'atomic' ,
>>> >                  mixing_mode = 'TF' ,
>>> >                  mixing_beta = 0.4 ,
>>> >                  mixing_ndim = 10,
>>> >              diagonalization = 'david' ,
>>> >  /
>>> > ATOMIC_SPECIES
>>> >    Ga   69.72300  Ga.pbe-n-van.UPF
>>> >     O   15.99400  O.pbe-van_ak.UPF
>>> > ATOMIC_POSITIONS crystal
>>> >    Ga      0.909000000    1.000000000    0.205000000    1  1  1
>>> >    Ga      0.841000000    0.500000000    0.685000000    1  1  1
>>> >    Ga      0.659000000    1.000000000    0.315000000    1  1  1
>>> >    Ga      0.591000000    0.500000000    0.795000000    1  1  1
>>> >    Ga      0.409000000    0.500000000    0.205000000    1  1  1
>>> >    Ga      0.341000000    1.000000000    0.685000000    1  1  1
>>> >    Ga      0.159000000    0.500000000    0.315000000    1  1  1
>>> >    Ga      0.091000000    1.000000000    0.795000000    1  1  1
>>> >     O      0.996000000    0.500000000    0.253000000    1  1  1
>>> >     O      0.827000000    1.000000000    0.439000000    1  1  1
>>> >     O      0.834000000    1.000000000    0.891000000    1  1  1
>>> >     O      0.673000000    0.500000000    0.561000000    1  1  1
>>> >     O      0.666000000    0.500000000    0.109000000    1  1  1
>>> >     O      0.496000000    1.000000000    0.253000000    1  1  1
>>> >     O      0.504000000    1.000000000    0.747000000    1  1  1
>>> >     O      0.327000000    0.500000000    0.439000000    1  1  1
>>> >     O      0.334000000    0.500000000    0.891000000    1  1  1
>>> >     O      0.166000000    1.000000000    0.109000000    1  1  1
>>> >     O      0.173000000    1.000000000    0.561000000    1  1  1
>>> >     O      0.000400000    0.500000000    0.747000000    1  1  1
>>> > K_POINTS tpiba_b
>>> > 6
>>> >    0.000000000    0.500000000    0.000000000      1.000000000
>>> >    0.500000000    0.500000000    0.000000000      1.000000000
>>> >    0.000000000    0.000000000    0.000000000      1.000000000
>>> >    0.500000000    0.000000000    0.500000000      1.000000000
>>> >    0.500000000    0.500000000    0.500000000      1.000000000
>>> >    0.000000000    0.500000000    0.500000000      1.000000000
>>> >
>>> >
>>> >
>>> > On Fri, Nov 7, 2014 at 2:04 PM, xiaochuan Ge <ustc.scgyer at gmail.com>
>>> > wrote:
>>> >         Sorry I made a mistake, you do not set this variable by hand,
>>> >         you should use kpoint 0 0 0 instead of using kpoint{gamma}
>>> >
>>> >
>>> >         On Friday, November 7, 2014, xiaochuan Ge
>>> >         <ustc.scgyer at gmail.com> wrote:
>>> >                 You may want to try to set "gamma_only=.false." In
>>> >                 your scf calculation.
>>> >
>>> >                 On Friday, November 7, 2014, Manu Hegde
>>> >                 <mhegde at uwaterloo.ca> wrote:
>>> >                         Hello All,
>>> >
>>> >
>>> >                         I am using latest version if QE (5.1). Is the
>>> >                         error regarding gamma point fixed.? I was just
>>> >                         trying to plot the bands it was showing the
>>> >                         same error. I have gone through the previous
>>> >                         threads, I did what suggested by you guys. But
>>> >                         still it is showing the error. Any
>>> >                         suggestions?.
>>> >
>>> >                         Error in routine bands (1):
>>> >                              gamma_only case not implemented
>>> >
>>> >
>>> >                         Regards,
>>> >                         Manu
>>> >
>>> >
>>> >
>>> >                 --
>>> >                 ===================
>>> >                 Dr. Xiaochuan Ge (Giovanni)
>>> >                 Center for Functional Nanomaterials
>>> >                 Brookhaven national laboratory
>>> >                 ===================
>>> >
>>> >
>>> >
>>> >         --
>>> >         ===================
>>> >         Dr. Xiaochuan Ge (Giovanni)
>>> >         Center for Functional Nanomaterials
>>> >         Brookhaven national laboratory
>>> >         ===================
>>> >
>>> >
>>> >
>>> >         _______________________________________________
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>>> >
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>>>
>>> --
>>>  Paolo Giannozzi, Dept. Chemistry&Physics&Environment,
>>>  Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
>>>  Phone +39-0432-558216, fax +39-0432-558222
>>>
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