<div dir="ltr"><div dir="auto" style="word-wrap:break-word">Dear Stacey, <div><br></div><div>there are multiple applications of DIIS. As it's written now you are using DIIS as a </div><div>directed minimizer (no SCF) in conjunction with the OT method. Instead, I assume </div><div>you want to use DIIS to accelerate the SCF convergence, in which case you have </div><div>to use TD together with PULAY_MIXING. However, my experience of Pulay_Mixing </div><div>is not particularly good when dealing with complicated systems. </div><div><br></div><div>Cheers, </div><div>Thomas<br><div class="m_6275809880679241191AppleOriginalContents" style="direction:ltr"><blockquote type="cite"><div>Am 28.04.2019 um 15:51 schrieb <a href="mailto:mdsimula...@gmail.com" target="_blank">mdsimula...@gmail.com</a>:</div><br class="m_6275809880679241191Apple-interchange-newline"><div><div dir="ltr">Hello,<div><br></div><div>Is this the correct way to use the DIIS SCF converger?</div><div><br></div><div><div> &SCF</div><div> SCF_GUESS ATOMIC</div><div> EPS_SCF 1.0E-8</div><div> MAX_SCF 200</div><div> &OT</div><div> MINIMIZER DIIS</div><div> &END OT</div><div> &MIXING .TRUE.</div><div> METHOD BROYDEN_MIXING</div><div> ALPHA 0.4</div><div> NBROYDEN 8</div><div> &END MIXING</div><div> &END SCF</div></div><div><br></div><div>This section would be located in section: FORCE_EVAL / DFT / SCF / OT</div><div><br></div><div>Thanks,</div><div>Stacey</div><ul class="m_6275809880679241191none" style="list-style-type:none;font-family:'Times New Roman';font-size:inherit"><li></li></ul><ul class="m_6275809880679241191none" style="list-style-type:none;font-family:'Times New Roman';font-size:inherit"></ul></div><div><br class="m_6275809880679241191webkit-block-placeholder"></div>
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