<div dir="ltr">Hi all,<div><br></div><div>I am having a problem while restarting a phonon job with "recover = .true.". </div><div><br></div><div>I have a supercell with 26 atoms.</div><div><br></div><div>I am calculating phonons by splitting a job on each q-points. Out of 6 q-points, all are done within the time limit of my cluster except one (q-point_5).</div><div><br></div><div>For the interrupted q-point
(q-point_5)
, out of 77 representations, I restarted from 62 representations. The restart run was fine, and started from the place of interruption (iterations). </div><div><br></div><div>At the end when the job is done, I see one frequency is negative (-18.4 cm-1).</div><div><br></div><div>On the other hand, I re-submitted the same calculation
from scratch
requesting more cores to get it done within the time frame of the cluster. In this case the frequency is not negative (17.6 cm-1).</div><div><br></div><div>Any suggestions will be appreciated.</div><div><br></div><div>Note: I am using qe-v6.6.</div><div><br></div><div>Sincerely,</div><div>Hari Paudyal</div><div>SUNY, Binghamton</div></div>