Next: 7.22 I do not
Up: 7 Troubleshooting
Previous: 7.20 pw.x does not
Contents
This is not an error. If a symmetry operation contains a fractional
translation that is incompatible with the FFT grid, it is discarded in
order to prevent problems with symmetrization. Typical fractional
translations are 1/2 or 1/3 of a lattice vector. If the FFT grid
dimension along that direction is not divisible respectively by 2 or
by 3, the symmetry operation will not transform the FFT grid into
itself.
Paolo Giannozzi
2009-10-01