&input
 dt = 0.01  ! Time step
 nu = 0.001  ! damping coefficient
 kinj = 1   
 gamma = 0.  ! source term
 kmax = 80
 nsteps = 2000
 nout = 10
 pert = -0.2   ! pert<0: initialize only k=1 mode
 fac = 1.
/

 