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[<us_sophie.green@yahoo.com>]

Dear all users,

I looked the tests in abinit about the GW calculations. In the GW corrections
for the band gap, the convergence tests (including ecutwfn, ecutsigx, nband,
etc) have done within only one point (the gamma point for Si). I am not sure 
of
its accuracy. Besides, the band gap correction for Si is in gamma point 
(direct
band gap semiconductor), whether the convergence test on gamma point is
revelant to the following calculation of the band gap correction in Gamma
point?
If I want to calculate the GW correction for the band gap with a nonspecial
point, for example (0.3 0.3 0), should I test the parameters with the  (0.3 
0.3
0) point, other than gamma point? The point (0.3 0.3 0) should be included in
the KSS calculation, then I wrote my input file in the Dataset2 part as
follows. I give three points including (0.3 0.3 0) ( the other two points are
interesting points, with which  I will also do GW corrections). I am not sure
whether it is feasible. 
Need your help. Thanks in advance.


# Dataset2: calculation of kss file
# Definition of k-points
kptopt2  0
nkpt2    3             # A set of 19 k-points containing Gamma
kpt      0.3  0.3  0
          0.5  0.5  0
         -0.5  0.5  0
#istwfk2  19*1                    # Option needed for Gamma
istwfk2  3*1
iscf2    -2             # Non self-consistent calculation
getden2  -1             # Read previous density file
nband2   13
nbandkss2 -1        # Number of bands to store in KSS file