Dear all,<br /><br />I've tried to use wfn file from single unit cell run as a starting guess in a multiple unit cell run, however it is rejected because of different number of atoms, e.g. in my attempt of using single cell wfn file for MULTIPLE_UNIT_CELL 2 11 CP2K printed<br /><br />READ RESTART : WARNING : DIFFERENT natom, returning 160 80<br /><br />So atomic guess has to be used. I wonder if there is a more efficient way to provide an initial guess wavefunction when "single cell" wavefunction is known. I suppose in this case it should be enough to translate wavefunction of one cell into atoms of its copy. Or, maybe even simpler, assuming that all stored wavefunction coefficients are given relative to coordinates of nuclei loaded from CELL/TOPOLOGY, just duplicate wavefunction of first 80 atoms to make a wavefunction for 160 atoms.<br /><br />Any ideas?<br /><br />Another way could be to load restart wavefunction for the first 80 atoms and assume atomic guess for other 80, but obviously it would be less efficient, and would probably require modification of CP2K code.<br />
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