CalculationMode = go
BoxShape = parallelepiped
PeriodicDimensions = 3
FromScratch = yes

a = 10

Spacing = 0.5

%LatticeParameters
 a | a | a
%

%LatticeVectors
 0.0 | 0.5 | 0.5
 0.5 | 0.0 | 0.5
 0.5 | 0.5 | 0.0
%

%ReducedCoordinates
  "Si" |   0.0       | 0.0       | 0.0
  "Si" |   1/4       | 1/4       | 1/4
%

%KPointsGrid
 2 | 2 | 2
 0.5 | 0.5 | 0.5
 0.5 | 0.0 | 0.0
 0.0 | 0.5 | 0.0
 0.0 | 0.0 | 0.5
%

KPointsUseSymmetries = yes

Eigensolver = chebyshev_filter
ConvRelDens = 1e-9
ExtraStates = 4
GOType = cell_shape
SCFCalculateStress = yes

ExperimentalFeatures = yes
