<div>There are several methods for convergence, you could try one of the others. i.e. OT (https://manual.cp2k.org/trunk/CP2K_INPUT/FORCE_EVAL/DFT/SCF/OT.html)</div><div><br /></div><div>A lower ALPHA value of i.e. 0.1 slows down convergence, but it can help with oscillations. </div><div><br /></div><div>You could also try to decrease EPS_DEFAULT 1.0E-16. </div><div><br /></div><div>I higher temperature for your FERMI smearing could also improve convergence. </div><div><br /></div><div>best,</div><div>Johann</div><br /><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Monday, November 17, 2025 at 4:26:39 PM UTC+1 hamid zabihi 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;">
<p>Hello CP2K Community,</p><p>I’m running a calculation in CP2K (input and coordinates attached) and encountering unusual SCF behavior. The SCF wavefunction optimization seems to oscillate rather than converge steadily</p><p>I’ve attached the full input file (<span>cr202.inp</span>), the log, and the coordinates (<span><a href="http://cr202.xyz" target="_blank" rel="nofollow" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://cr202.xyz&source=gmail&ust=1763552852255000&usg=AOvVaw10bZgiv_5q4Z0zQ8H_cZ09">cr202.xyz</a></span>) for reference. Any advice on improving SCF convergence would be greatly appreciated.</p>
<p>Thank you,<br>Hamid </p>
<br></blockquote></div>
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