Thank you very much for the answers. I will try the BFGS.<div>PS: I hope not to have to deal anymore with electric cutoff in the near future...</div><div>Oliver<br><br></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Friday, 20 May 2022 at 12:22:23 UTC+2 Marcella Iannuzzi 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;"><br>Dear Oliver, <div><br></div><div>My suggestion is to use BFGS in place of CG</div><div><br></div><div>Regards</div><div> Marcella</div><div><br></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Friday, May 20, 2022 at 10:50:06 AM UTC+2 <a href data-email-masked rel="nofollow">wave...@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">Hi Oliver<div><br></div><div>Can't really help other than to say I have observed this as well.</div><div><br></div><div><div>Kind Regards</div><div><br></div><div>Sam</div><br></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Wednesday, May 18, 2022 at 5:43:13 PM UTC+2 Oliver 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">Hi cp2k users,<div>I would like to address a concern which i came through recently when my cp2k program crashed for some reason. I'm doing a geometry optimization on an atomic system with the Gradient Conjugate option (CG) and default values for CG keywords. While restarting the program, i discovered that the two "new" first iterations were done with the Steepest Descent method (SD) and that the third one was using CG method. Unfortunately, the System's energy jumps a bit from the last value calculated before cp2k crashed while using CG during this iteration. As a consequence, the atomic configuration is blurred and it seems that the optimization process couldn't return anymore to the optimization path found before the crash. </div><div>I tried to play with keywords Max_Steep_Steps and Restart_Limit, but nothing changes.</div><div>Does anyone could give me some advice on how to force cp2k to only use CG for the "new" iterations when restarting the program.</div><div>Thanks in advance for the help.</div><div>Oliver</div></blockquote></div></blockquote></div></blockquote></div>
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