<div dir="ltr"><div>Very strange: as far as I remember. dft-d3 does not depend upon the cutoff</div><div><br></div><div>Paolo<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, May 15, 2019 at 2:48 AM Christoph Wolf <wolf.christoph@qns.science> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Dear all,<div><br></div><div>I noticed something interesting: when testing the convergence of total energy wrt. ecutwfc (keeping ecutrho at 4*ecutwfc and using NC PPs) the convergence without vdW is fairly straightforward and monotonous, however with grimme-d3 VdW correction applied the behavior of total energy becomes very "jumpy", it has plateaus between certain values of the ecutwfc but then jumps and is generally very hard to converge - any hints on how to improve that for calculations of "molecules in a box"?</div><div><br></div><div>Thanks in advance for your help!</div><div><br></div><div>Best,</div><div>Chris <br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail-m_-3416378316410924332gmail_signature"><div dir="ltr">Postdoctoral Researcher<br>Center for Quantum Nanoscience, Institute for Basic Science<br>Ewha Womans University, Seoul, South Korea<blockquote type="cite" style="font-size:12.8px"><div dir="ltr"><div><div dir="ltr"></div></div></div></blockquote></div></div></div></div>
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