[Pw_forum] missing q point

Gabriele Sclauzero sclauzer at sissa.it
Mon Jun 15 15:17:46 CEST 2009



Gabriele Sclauzero wrote:
> 
> Mehrnaz Anvari wrote:
>> I used new version of pakage (espresso-4.0.5) as you told me & the error 
>> was disappeared. I performed Eyvaz suggestion too, I mean that I used 
>> different grids (for nq1,nq2,nq3) for instance 2 2 2 , 4 4 4, 4 4 
>> 2,...but the error existed  in all of these cases. 
> 
> First of all, I don't understand why your k-point grid is not 2D (i.e. nkx, nky, 1) if you 
> want to study graphite.

Sorry, I meant graphene, not graphite, obviuosly...

GS

> 
>> Finally I couldn't 
>> understand main reason of this error. when I open the dyn0 file I see 
>> only kpoints with high symmetry, so it means that the program could 
>> indicate the symmetry of system but in the following it could'nt keep 
>> all of them it is so strange(?)     
> 
> Be carefull that until a recent change in the CVS version the ph.x was overwriting pw.x 
> data in the .save directory, so that if you do successive ph.x calculations without making 
> a copy of that directory it may not work.
> 
> Now I will try some of your problematic k-points grids and let oyu know if they work with 
> the CVS version.
> 
> GS
> 
>>  
>>
>>
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>>
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> 

-- 


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| Gabriele Sclauzero, PhD Student                  |
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