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- From: "Alexandra Friedrich" <Friedrich@kristall.uni-frankfurt.de>
 - To: <forum@abinit.org>
 - Subject: Problems with the ddk perturbation
 - Date: Tue, 3 Dec 2002 13:52:09 +0100
 - Organization: Uni Frankfurt
 
| 
 Dear ABINITioners, 
when using ABINIT_v3.3.3 or ABINIT_v3.4.3 for 
DOS/Windows, I experienced some troubles with the ddk perturbation. When the 
first perturbation converged in tolwfr, a bug was reported and the program 
stopped. The bug reads: 
At SCF step 45 max residual= 1.00E-22 < tolwfr= 
1.00E-22 =>converged. 
rdnpw : BUG - 
At k point number 2, with spin polarization 
1, 
for wf file unit 13, the value of 
npwso_disk=****** 
disagrees with argument npw_k*nspinor= 7102. IO 
problem. 
Action : contact ABINIT group. 
I do not know how to overcome this problem 
as I did not change the input information from the ground-state 
calculation. Could anyone of you help me? 
The input file reads: 
ecut 25 
ndtset 3 
#GS calculation 
kptopt1 1 
tolvrs1 1.0d-18 
iscf1 5 
prtden1 1 
#ddk RF calculation 
rfelfd2 2 
rfdir2 1 0 1 
nqpt2 1 
qpt2 0 0 0 
getwfk2 1 
kptopt2 2 
iscf2 -3 
tolwfr2 1.0d-22 
#RF calculation with q=0 
rfphon3 1 
rfatpol3 1 3 
rfelfd3 3 
rfdir3 1 1 1 
nqpt3 1 
qpt3 0 0 0 
kptopt3 2 
getwfk3 1 
getddk3 -1 
iscf3 5 
tolvrs3 1.0d-8 
####################################################################### 
#Common input variables 
enunit 2 
#Definition of the unit cell 
spgroup 122 
acell 5.7633 5.7633 10.6201 angstrom  
brvltt -1 
#Definition of the k-point grid 
ngkpt 4 4 4 
nshiftk 2 
shiftk 0.25 0.25 0.25 
-0.25 -0.25 -0.25 
#Definition of the atom types 
ntype 3  
zatnum 47 31 34  
#Definition of the atoms 
natom 8 
natrd 3 
type 1 2 3 
xred  
0.000000000000 0.000000000000 0.000000000000 
0.000000000000 0.000000000000 0.500000000000 
0.2867 0.25 0.125 
nband 26 
#Definition of the SCF procedure 
nstep 50  
Thanks in advance! 
Alexandra 
---------------------------------------------------------------------- 
Dr. Alexandra Friedrich Institut fuer Mineralogie, Abt. Kristallographie J.W. Goethe Universität Senckenberganlage 30 D-60054 Frankfurt/M. Email: Friedrich@kristall.uni-frankfurt.de Phone: +49-(0)69-798 25198 Fax: +49-(0)69-798 22101 ----------------------------------------------------------------------  | 
- Problems with the ddk perturbation, Alexandra Friedrich, 12/03/2002
- Re: [abinit-forum] Problems with the ddk perturbation, Xavier Gonze, 12/03/2002
 
 
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