<ul><li><div><font style="font-size:14.5px"><font style="font-family:Nylas-Pro, Helvetica, "Lucidia Grande", sans-serif">Note: The following floating-point exceptions are signalling: IEEE_DENORMAL</font></font></div></li></ul><div>It is not an error, not a message from quantum espresso, it is a message generated by some math library indicating that a denormal number has appeared during a calculation: <a href="https://link.getmailspring.com/link/1B578977-73E6-471F-910F-EC0F58F7C410@getmailspring.com/0?redirect=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FSubnormal_number&recipient=dXNlcnNAbGlzdHMucXVhbnR1bS1lc3ByZXNzby5vcmc%3D" title="https://en.wikipedia.org/wiki/Subnormal_number">https://en.wikipedia.org/wiki/Subnormal_number</a><br></div><div>regards</div><br><div><signature id="local-80497166-1ed1">--<br><span style="font-size:0.9em;color:gray;">Lorenzo Paulatto - Paris<span></span></span></signature></div><div class="gmail_quote_attribution">On Dec 18 2021, at 5:05 pm, Olga Sedelnikova <o.sedelnikova@gmail.com> wrote:</div><blockquote><div><div>Dear Lorenzo,</div><div>thank you for your answer.</div><div>Now I restarted scf file I attached previously and got a message from pw.x: "Note: The following floating-point exceptions are signalling: IEEE_DENORMAL". Probably, it is the reason for m problem with epsilon.x? What can I do about it?</div><div>Previously I used C.pz-vbc.UPF with the same scf, nscf and eps files, this error has never appeared.</div><div>Thank you in advance,</div><div>Olga Sedelnikova</div><div><div class="gmail-ii gmail-gt"><div class="gmail-a3s gmail-aiL"><div><div><font style="font-size:0.875rem"><font style="font-family:Roboto, RobotoDraft, Helvetica, Arial, sans-serif"><font style="font-size:small"><font style="font-family:Arial, Helvetica, sans-serif"><span style="color:#888888">Nikolaev Institute of Inorganic Chemistry of SB RAS</span></font></font></font></font></div></div></div></div><div class="gmail-hq gmail-gt"><br></div></div></div><div>_______________________________________________</div><div>Quantum ESPRESSO is supported by MaX (www.max-centre.eu)</div><div>users mailing list users@lists.quantum-espresso.org</div><div>https://lists.quantum-espresso.org/mailman/listinfo/users</div></blockquote><img class="mailspring-open" alt="Sent from Mailspring" width="0" height="0" style="border:0; width:0; height:0;" src="https://link.getmailspring.com/open/1B578977-73E6-471F-910F-EC0F58F7C410@getmailspring.com?me=ca1a67e4&recipient=dXNlcnNAbGlzdHMucXVhbnR1bS1lc3ByZXNzby5vcmc%3D">