<div dir="ltr"><div>Dear Expertise <br></div><div><br></div><div>The suggested values of the ecutrho and ecutwfc are making my calculation expensive. For instance, in the pseudo potential file of Bi,
<a class="element_anchor" target="_blank" href="https://www.quantum-espresso.org/upf_files/Bi.pbe-dn-kjpaw_psl.1.0.0.UPF">Bi.pbe-dn-kjpaw_psl.1.0.0.UPF</a>, these are:</div><div>
<pre> Suggested minimum cutoff for wavefunctions: 45. Ry
Suggested minimum cutoff for charge density: 455. Ry</pre>Is there any problem if I use less values than these as much as the total energy of the system converges?</div><div><br></div><div>Thank you in advance for your response.</div><div><br></div><div>With Regards<br></div><div><br>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><span style="color:rgb(153,153,153)"><span style="background-color:rgb(0,0,0)"><span></span></span><span style="color:rgb(0,0,255)">Endale Abebe</span></span></div><div><span style="color:rgb(0,0,255)">Program coordinator and </span><span style="color:rgb(0,0,255)"><span><span style="color:rgb(0,0,255)">Lecturer</span></span></span></div><div><span style="color:rgb(0,0,255)">Faculty of Materials Science and Engineering</span></div><div><span style="color:rgb(0,0,255)">Jimma Institute of Technology</span></div><div><span style="color:rgb(0,0,255)">Jimma University<br></span></div><div><span style="color:rgb(0,0,255)">P.O.Box 378, Jimma, Ethiopia</span></div><div><span style="color:rgb(0,0,255)">Mobile: +251921381598</span><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>