[Wien] init_lapw problem of a surface structure

archieve mail yhzhao.mail at gmail.com
Wed Jan 4 10:43:09 CET 2012


Hi Blaha,

   That's it. Thanks very much for you to fix the problem.
Does it mean that double precision is not enough in sgroup?

Best,
Yonghong

2012/1/4 Peter Blaha <pblaha at theochem.tuwien.ac.at>

> Now I can verify your problem:
>
> You sent a struct file (with zero symmetry operations) and with vacuum.
>
> x nn    gives me   some errors and I accept the new file.
>
> x sgroup also tells me, that it has reduced the cell.
>    if you neglect sgroup, the following step:
>        x symmetry     gives many errors (check outputs)
>    so you must not neglect sgroup, but accept its struct file.
>        x symmetry     gives again an error: "2 missing" and stops after
> the second atom.
>
> Inspection of the case.struct file generated by sgroup reveals that
> there were some rounding problems, both for the lattice parameters and
> some positions.
> Correct the struct file manually and make sure:
>
> H   LATTICE,NONEQUIV.ATOMS:  4 164 P-3m1
>             RELA
>  8.058280  8.058280 59.738673 90.000000 90.000000120.000000
>     a         b              that a and b are identical (they are not
> after sgroup)
>
> all 1/3 and 2/3 positions have "full accuracy" and not a 2 or 6 at the
> end, i.e.
>
> ATOM   2: X=0.66666667 Y=0.33333333 Z=0.05506950
>          MULT= 2          ISPLIT= 8
>       2: X=0.33333333 Y=0.66666667 Z=0.94493050
> Ge2        NPT=  781  R0=0.00010000 RMT=    2.5000   Z: 32.0
> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>                     0.0000000 1.0000000 0.0000000
>                     0.0000000 0.0000000 1.0000000
> ATOM   3: X=0.33333333 Y=0.66666667 Z=0.11013900
>          MULT= 2          ISPLIT= 8
>       3: X=0.66666667 Y=0.33333333 Z=0.88986100
>
> After this fix, symmetry and the following programs run without problems.
>
> I attach the corrected struct file.
>
>
> Am 04.01.2012 09:56, schrieb archieve mail:
>
>> I mean that with reduced.struct, there is no errors. For surface.struct,
>> init_lapw will change it to reduced.struct after several nn and sgroup.
>>
>> Best,
>>
>> Yonghong
>>
>> On Wed, Jan 4, 2012 at 4:47 PM, Peter Blaha <pblaha at theochem.tuwien.ac.at<mailto:
>> pblaha at theochem.**tuwien.ac.at <pblaha at theochem.tuwien.ac.at>>> wrote:
>>
>>    What means "you cannot find any errors before".
>>
>>    x nn
>>    WARNING: Mult not equal. PLEASE CHECK outputnn-file
>>    WARNING: ityp not equal. PLEASE CHECK outputnn-file
>>    .....
>>
>>    Just accet (take) the new case.struct_nn
>>
>>    Am 04.01.2012 09:36, schrieb archieve mail:
>>
>>        Dear Blaha,
>>
>>            Thanks for your quick reply.
>>
>>            In fact this struct file is generated by init_lapw from the
>> attached file "surface.struct", which is
>>        just (111) supercell of GeTe with NaCl structure. If there is no
>> vacuum, sgroup will recognise it as
>>        NaCl structure. However, present of vacuum in the slab,
>> surface.struct will reduced by sgroup to
>>        the previous attached file, and then give errors while kgen. I
>> cannot find any errors before it.
>>
>>        Thanks a lot.
>>
>>        Yonghong Zhao
>>
>>        On Wed, Jan 4, 2012 at 4:26 PM, Peter Blaha <
>> pblaha at theochem.tuwien.ac.at <mailto:pblaha at theochem.**tuwien.ac.at<pblaha at theochem.tuwien.ac.at>>
>> <mailto:pblaha at theochem.__tuwi**en.ac.at <http://tuwien.ac.at>
>>
>>        <mailto:pblaha at theochem.**tuwien.ac.at<pblaha at theochem.tuwien.ac.at>>>>
>> wrote:
>>
>>            The error must have occurred earlier (already at nn, or at
>> symmetry). Your struct file
>>            is not ok, and my guess is that you neglected some errors
>> coming up at one of the
>>            previous steps.
>>
>>            Am 04.01.2012 07:17, schrieb archieve mail:
>>
>>                Dear Blaha,
>>
>>                     I have a question about the init_lapw of a surface
>> structure.
>>
>>                     When init_lapw, it failed to generate in2_st file
>> while kgen, with following error message.
>>                ------------------------------**
>> ____--------------------------**--__--__----------------------**
>> ----__----__------------------**------__------__---------
>>
>>
>>                LSTART ENDS
>>                0.3u 0.0s 0:02.31 16.4% 0+0k 0+1544io 0pf+0w
>>                -----> continue with kgen or edit the test.inst file and
>> rerun lstart (c/e)
>>                c
>>                -----> in  test.in1_st  select   RKmax ( usually 5.0 - 9.0
>> )
>>                -----> in  test.in2_st  select   LM's, GMAX and
>> Fermi-Energy method
>>         >   inputfiles prepared    (13:31:45)
>>         >   kgen    (13:31:45) forrtl: severe (24): end-of-file during
>> read, unit 20, file /home/yhzhao/work/GeTe/111/___**
>> _surface/test/test.struct
>>
>>
>>                Image              PC                Routine
>>  Line        Source
>>                kgen               0000000000489BEA  Unknown
>> Unknown  Unknown
>>                kgen               0000000000488765  Unknown
>> Unknown  Unknown
>>                kgen               000000000045F866  Unknown
>> Unknown  Unknown
>>                kgen               0000000000450D65  Unknown
>> Unknown  Unknown
>>                kgen               0000000000450521  Unknown
>> Unknown  Unknown
>>                kgen               000000000041C209  Unknown
>> Unknown  Unknown
>>                kgen               00000000004038E0  Unknown
>> Unknown  Unknown
>>                kgen               000000000040320C  Unknown
>> Unknown  Unknown
>>                libc.so.6          00002AF6D7F7BEFF  Unknown
>> Unknown  Unknown
>>                kgen               0000000000403109  Unknown
>> Unknown  Unknown
>>                0.0u 0.0s 0:00.00 0.0% 0+0k 0+0io 0pf+0w
>>                error: command   /home/yhzhao/wien2k11/kgen kgen.def
>> failed
>>                ------------------------------**
>> ____--------------------------**--__--__----------------------**
>> ----__----__------------------**------__------__---------
>>
>>
>>
>>                I'm look forward to hear from you.
>>
>>                Best,
>>
>>                Yonghong Zhao
>>
>>
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>>            --
>>
>>                                                  P.Blaha
>>            ------------------------------**____--------------------------
>> **--__--__--------------
>>
>>
>>            Peter BLAHA, Inst.f. Materials Chemistry, TU Vienna, A-1060
>> Vienna
>>            Phone: +43-1-58801-165300 <tel:%2B43-1-58801-165300>
>> <tel:%2B43-1-58801-165300>             FAX: +43-1-58801-165982<tel:%2B43-1-58801-165982> <tel:%2B43-1-58801-165982>
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>>    --
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>>                                          P.Blaha
>>    ------------------------------**__----------------------------**
>> --__--------------
>>    Peter BLAHA, Inst.f. Materials Chemistry, TU Vienna, A-1060 Vienna
>>    Phone: +43-1-58801-165300 <tel:%2B43-1-58801-165300>             FAX:
>> +43-1-58801-165982 <tel:%2B43-1-58801-165982>
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> --
>
>                                      P.Blaha
> ------------------------------**------------------------------**
> --------------
> Peter BLAHA, Inst.f. Materials Chemistry, TU Vienna, A-1060 Vienna
> Phone: +43-1-58801-165300             FAX: +43-1-58801-165982
> Email: blaha at theochem.tuwien.ac.at    WWW: http://info.tuwien.ac.at/**
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