<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial,helvetica,sans-serif;font-size:12pt"><div><pre>Dear Pwscf users,<br><br>Could you please tell me is it possible to solve a system with pwscf that is not periodic?<br><br>For example, I would like to calculate phonon frequencies of a molecule with a larg amount of atoms such as 500,defining this molecule <br>in a periodic lattice is easy but its phonon caculation is impossilble here.<br>Does anybody have any solution? <br>Any helps are appricated.<br><br>Bests<br><br></pre></div>
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