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[Skorlans Mathew <skorlans@gmail.com>]

dear users,
            I am doing band structure calculation for YMnO3 hexagonal phase.
the band structure run stops abruptly after SCF and displays " segmentation
fault" in the command window.I tried changing 'ngkpt.',still same fault occurs
.There is no error reported in the "log" file. here is my input file

 ndtset 2
#Dataset 1 : usual self-consistent calculation
nshiftk1 1
shiftk1  0.0 0.0 0.0  
ngkpt1  2 2 2
tsmear 5.0d-3
prtden1  1         
toldfe1  1.0d-6
enunit1  1 
nsppol1 2
nspinor1 1
spinat1 0 0 0
        0 0 0
        0 0 0.38
        0 0 0
        0 0 0
        0 0 0
        0 0 0
nspden1 2
nband1 160
#Dataset 2 : the band structure
iscf2    -2
getden2  -1
kptopt2  -3
nband2   160
ndivk2   10 10 15 
kptbounds2  
           0.0 0.0 0.0
           0.5 0.5 0.0 
           0.5 0.0 0.0
           0.0 0.0 0.0
                        
tolwfr2  1.0d-10
enunit2  1             
nsppol2  2
nspinor2 1
spinat2 0 0 0
        0 0 0
        0 0 0.38
        0 0 0
        0 0 0
        0 0 0
        0 0 0
nspden2 2
#Definition of the unit cell
acell 6.128 6.128 11.389 angstrom
angdeg 90 90 120   

ntypat 3
 znucl 39  25  8
 natrd 7
 spgroup 185
 brvltt -1
 natom 30
 typat 1 1 2 4*3   

#Starting approximation for atomic positions in REDUCED coordinates
xred    
     0.000 0.000 0.2743 #Y
     1/3   2/3   0.2335 #Y
     0.335 0.000 0.0000 #Mn 
     0.308 0.000 0.1627
     0.359 0.000 -0.1628
     0.000 0.000 -0.0218
     1/3   2/3    0.0186
                 
#Definition of the planewave basis set
ecut 30         
#Definition of the SCF procedure
nstep 500          
I will be grateful if any one can help me to fix it
Thanks and Regards
Skorlans K M
M S student
NITT- India