<div>Dear Raymond,</div><div><br /></div><div>Have you checked how the structure evolves? I suspect it changes drastically. The energy change per iteration is ~10 Ha which is enormous (more than few 100 mHa is suspicious). From a glance at your input deck and the structure I can see a few issues.</div><div>1. the periodicity of the poisson solver and the cell don't match</div><div>2. there is very little vacuum between the molecule and the periodic image of the substrate</div><div>3. only the top surface of the substrate is passivated</div><div><br /></div><div>You need to decide how you want to deal with periodicity and adapt the input and the structure accordingly.</div><div><br /></div><div>Cheers,</div><div>Fabian<br /></div><br /><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Wednesday 6 December 2023 at 11:56:55 UTC+1 Raymond Amador 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>Good morning everyone,</div><div><br></div><div>I have been encountering somewhat of an odd problem on CP2K on both Piz Daint and LUMI, whereby the following error message is displayed:</div><div><br></div><div> *******************************************************************************<br> * ___ *<br> * / \ *<br> * [ABORT] *<br> * \___/ KS energy is an abnormal value (NaN/Inf). *<br> * | *<br> * O/| *<br> * /| | *<br> * / \ qs_ks_methods.F:888 *<br> *******************************************************************************</div><div><br></div><div>I first got the error message running some MD simulations, and then decided to just try a simple geometry optimization, and the problem still persisted. I have tried playing around with the convergence parameters and the basis set size, and, after around 15 OPTIMIZATION STEPS or so, the error prints.</div><div><br></div><div>Would anyone know how to solve this issue? Attached are the input and output files as well as the submission script on LUMI.</div><div><br></div><div>Thanks and best regards,</div><div>Ray<br></div></blockquote></div>
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