<div>Dear You,</div><div><br></div><div>The wavelet solver is supported by version 6. But the manual states:<br></div><div>"[...]
<em>and slab-boundary conditions (but only PERIODIC
XZ)</em>. [...]"<br></div><div>You might have to rotate your system to accomodate this restriction.</div><div><br></div><div>Best,</div><div>Fabian<br></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Saturday, 14 November 2020 at 04:50:57 UTC+1 Y Lu wrote:<br/></div><blockquote class="gmail_quote" style="margin: 0 0 0 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Dear Fabian,<div><br></div><div>yes it works like a charm! Amazing!</div><div><br></div><div>I was running CP2K 6 and it didn't support WAVELET Poisson solver on 2D but I'll try 7 instead.</div><div><br></div><div>Thanks a lot!</div><div><br></div><div>Best regards,</div><div><br></div><div>You</div><div><br></div><div><br></div><div><br></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Friday, 13 November 2020 at 17:13:49 UTC <a href data-email-masked rel="nofollow">fa...@gmail.com</a> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>Dear You,</div><div><br></div><div>A few pointer that can improve the scf convergence:</div><div> - decrease EPS_DEFAULT to at least 1e-12</div><div> - increase the smearing temperature</div><div> - increase the cutoff, 300 is rather low here</div><div> - use BROYDEN_MIXING</div><div> - I found that ALPHA between 0.15 and 0.2 is often a good choice for metallic systems</div><div> - you can use far fewer ADDED_MOS, 20 is plenty here</div><div><br></div><div>Another
issue you should address is the periodicity. The settings in
&POISSON and &CELL have to match unless you really know what you
are doing. The WAVELET solver allows for slab periodicity, see
<a href="https://manual.cp2k.org/cp2k-7_1-branch/CP2K_INPUT/FORCE_EVAL/DFT/POISSON/WAVELET.html" rel="nofollow" target="_blank" data-saferedirecturl="https://www.google.com/url?hl=en-GB&q=https://manual.cp2k.org/cp2k-7_1-branch/CP2K_INPUT/FORCE_EVAL/DFT/POISSON/WAVELET.html&source=gmail&ust=1605426831199000&usg=AFQjCNFKUTlca00LRWIhIslRyAUWdn9sRQ">https://manual.cp2k.org/cp2k-7_1-branch/CP2K_INPUT/FORCE_EVAL/DFT/POISSON/WAVELET.html</a>.</div><div><br></div><div>The
attached input (ignoring the problem with the periodicity) converged
within 120 iterations. This can probably still be improved upon.</div><div><br></div><div>Cheers,</div><div>Fabian<br></div><div><br></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Friday, 13 November 2020 at 17:15:05 UTC+1 Y Lu wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Google didn't allow to post with plain text attachments!<br><br></blockquote></div></blockquote></div></blockquote></div>