<br /><br /><div><div dir="auto">среда, 3 сентября 2025 г. в 17:14:05 UTC+3, Charlotte Lai: <br /></div><blockquote style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div style="font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,Cantarell,"Noto Sans",sans-serif,Arial,"PingFang SC","Source Han Sans SC","Microsoft YaHei UI","Microsoft YaHei","Noto Sans CJK SC",sans-serif; margin: 0px 0px 16px; padding: 0px; border-width: 0px; border-style: none; border-color: currentcolor; border-image: none; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-stretch: inherit; font-size: 16px; line-height: 26px; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; vertical-align: baseline; letter-spacing: 0px; max-width: 100%; color: rgba(0, 0, 0, 0.9);">Dear CP2K community,</div><div style="font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,Cantarell,"Noto Sans",sans-serif,Arial,"PingFang SC","Source Han Sans SC","Microsoft YaHei UI","Microsoft YaHei","Noto Sans CJK SC",sans-serif; margin: 0px 0px 16px; padding: 0px; border-width: 0px; border-style: none; border-color: currentcolor; border-image: none; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-stretch: inherit; font-size: 16px; line-height: 26px; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; vertical-align: baseline; letter-spacing: 0px; max-width: 100%; color: rgba(0, 0, 0, 0.9);">While optimizing the structure of a triangular MoS₂ monolayer, I find that the SCF convergence cannot be pushed below the originally set EPS_SCF = 1 × 10⁻⁶. Could experienced users advise whether it is acceptable to first carry out a coarse geometry optimization with EPS_SCF = 5 × 10⁻⁶, and then restart the calculation on the resulting structure with the tighter criterion EPS_SCF = 1 × 10⁻⁶ for a more accurate refinement?</div><div style="font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,Cantarell,"Noto Sans",sans-serif,Arial,"PingFang SC","Source Han Sans SC","Microsoft YaHei UI","Microsoft YaHei","Noto Sans CJK SC",sans-serif; margin: 0px; padding: 0px; border-width: 0px; border-style: none; border-color: currentcolor; border-image: none; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-stretch: inherit; font-size: 16px; line-height: 26px; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; vertical-align: baseline; letter-spacing: 0px; max-width: 100%; color: rgba(0, 0, 0, 0.9);">Thank you in advance for any suggestions.</div></blockquote><div><br />In my opinion, EPS_SCF 1E-6 is already very coarse (I normally use 1E-8). If you are having convergence troubles with 1E-6, it likely indicates numeric instability in SCF, which, for example, may be caused by basis set being too diffuse for the system under investigation.<br /></div></div>
<p></p>
-- <br />
You received this message because you are subscribed to the Google Groups "cp2k" group.<br />
To unsubscribe from this group and stop receiving emails from it, send an email to <a href="mailto:cp2k+unsubscribe@googlegroups.com">cp2k+unsubscribe@googlegroups.com</a>.<br />
To view this discussion visit <a href="https://groups.google.com/d/msgid/cp2k/852fd55c-ca93-4992-ad01-43a8c1ae6851n%40googlegroups.com?utm_medium=email&utm_source=footer">https://groups.google.com/d/msgid/cp2k/852fd55c-ca93-4992-ad01-43a8c1ae6851n%40googlegroups.com</a>.<br />