<div dir="ltr"><div><div><div><div><div>Dear all,<br><br></div>I want to calculate phonon with SOC. I just only add Two parameter in the scf calculation for this: noncolin and lspinorb.<br><br></div>My calculation are good for pw.x and ph.x, but when I start to calculate q2r.x and matdyn.x the program gives me this error:<br><br>     reading grid info from file tinisn_scfsoc.dyn0<br>  reading force constants from file tinisn_scfsoc.dyn1<br><br> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>     Error in routine q2r (1):<br>     file tinisn_scfsoc.dyn1 missing!<br> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br><br><br><br> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>     Error in routine q2r (1):<br>     file tinisn_scfsoc.dyn1 missing!<br><br><br></div>Would you please tell me what is the problem?<br><br></div>Best,<br></div>Maedeh Zahedifar<br></div>