<html><head></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir="ltr" data-setdir="false">Dear QE experts,</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">I had my calculations stopped because my disk space is not enough to store the wavefunctions written by QE (ph.x) after the calculation is finished.</div><div dir="ltr" data-setdir="false">I am doing electron-phonon = 'lambda_tetra' calculation.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><div><div>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</div><div> Error in routine davcio (10):</div><div> error writing file "..../_ph0/pwscf.q_9/pwscf.wfc501"</div></div><div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</div></div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;"><br></div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;" dir="ltr" data-setdir="false">Looking at this error, I realize that in QE, the wavefunction is always written to the disk after the calculation.</div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;" dir="ltr" data-setdir="false"><br></div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;" dir="ltr" data-setdir="false">I am also a VASP user, and in VASP there is an input tag to not write the wavefunction (LWAVE).</div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;" dir="ltr" data-setdir="false">Is there a similar method to do this in quantum espresso (ph.x)?</div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;" dir="ltr" data-setdir="false"><br></div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;" dir="ltr" data-setdir="false">It doesn't seem that the wavefunction files will be needed for the post-processing (?), so I wonder if they don't need to be written actually.<br></div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;" dir="ltr" data-setdir="false">But I may be completely wrong. Please correct me if so.</div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;" dir="ltr" data-setdir="false"><br></div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;" dir="ltr" data-setdir="false">Thank you for your advice,</div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;" dir="ltr" data-setdir="false">Best regards,</div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;" dir="ltr" data-setdir="false">Alpin N. Tatan</div><div style="color: rgb(0, 0, 0); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;" dir="ltr" data-setdir="false">University of Tokyo</div></div></div></body></html>