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[abinit-forum] GW: KSS File and parallelism


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  • From: Rolf Oettking <rolf.oettking@etit.tu-chemnitz.de>
  • To: forum@abinit.org
  • Subject: [abinit-forum] GW: KSS File and parallelism
  • Date: Tue, 9 Sep 2008 11:52:35 +0200

Dear forum members,

unsing abinit.5.5.4, the options

wfoptalg 1
nbdblock 3 seem not to work

By starting the job, the program is stuck after reading in the necessary *_DEN
file. If the options are commented out, the program works.

Is the parallelisation over bands possibly not yet implemented for GW-
calculations (especially the KSS-file contruction) ?

The settings nproc= 36, nktpt=12 -> nbdblock 3 matches

_______________________________________________________-
The input file reads:

[...]
kptopt 1
ngkpt 2 2 2

nkpt1 12
nshiftk1 2
shiftk1 0.0 0.0 0.0
0.5 0.0 0.0

nband1 200

prtden1 1
prtpot1 1
prtvha1 1
prtvxc1 1
prtvhxc1 1

# Dataset2: calculation of kss file
# Definition of k-points

nkpt2 12 # A set of 19 k-points containing Gamma
nshiftk2 2
shiftk2 0.0 0.0 0.0
0.5 0.0 0.0

istwfk2 12*1
iscf2 -2
getden2 -1
nband2 200
nbandkss2 200


#wfoptalg2 1 <--| '#'
#nbdblock2 3 <--| '#'This works now !

________________________________________________________

The last lines of the log (with the last two options right above) read

hdr_check: Density/Potential file is OK for restart of calculation
================================================================================
ioarr: data read from disk file HfO2_GW_maini_DS2_DEN

================================================================================

getcut: wavevector= 0.0000 0.0000 0.0000 ngfft= 64 64 72
ecut(hartree)= 50.000 => boxcut(ratio)= 2.01468

ewald : nr and ng are 3 and 19

__________________________________________________________

Any suggestions?

With best regards
Rolf Oettking


  • [abinit-forum] GW: KSS File and parallelism, Rolf Oettking, 09/09/2008

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