<div dir="ltr"><div>Thanks for the clarification, if i want to work with a fixed spin state from the beginning and do not want to relax the spin/flip spins, what should i do? In addition to the multiplicity, should I just give the fixed magnetic moment, and give RELAX_MULTIPLICITY as 0? <br></div><div><br></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Wed, Apr 23, 2025 at 9:59 AM Krack Matthias <<a href="mailto:matthias.krack@psi.ch">matthias.krack@psi.ch</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg-7684452582722967821">





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<p class="MsoNormal"><span lang="EN-US">The default for </span>RELAX_MULTIPLICITY
<span lang="EN-US">is zero and very small positive values are used typically to promote spin flips. A large value of -1 (Hartree) doesn’t seem to make much sense.</span><span lang="EN-US" style="font-size:11pt"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt"><u></u> <u></u></span></p>
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<b><span style="color:black">From: </span></b><span style="color:black"><a href="mailto:cp2k@googlegroups.com" target="_blank">cp2k@googlegroups.com</a> <<a href="mailto:cp2k@googlegroups.com" target="_blank">cp2k@googlegroups.com</a>> on behalf of Anirudh Natarajan <<a href="mailto:anirudhnatarajan23@gmail.com" target="_blank">anirudhnatarajan23@gmail.com</a>><br>
<b>Date: </b>Wednesday, 23 April 2025 at 06:33<br>
<b>To: </b>cp2k <<a href="mailto:cp2k@googlegroups.com" target="_blank">cp2k@googlegroups.com</a>><br>
<b>Subject: </b>Re: [CP2K:21405] CPASSERT qs initialization<u></u><u></u></span></p>
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Thanks for the responses, I have fixed the geometry issue. <br>
I want to fix the spin and do not want to relax it, based on the multiplicity i am giving it in the beginning.
<br>
So do the keywords <em><span style="font-family:"Aptos",sans-serif">FIXED_MAGNETIC_MOMENT and  RELAX_MULTIPLICITY 
</span></em>be the reason behind the error? <br>
<br>
I am using RELAX_MULTIPLICITY -1 here. Could it be the problem?<u></u><u></u></p>
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<p class="MsoNormal" style="margin-left:36pt">On Tuesday, April 22, 2025 at 12:41:12<span style="font-family:"Arial",sans-serif"> </span>PM UTC+2 Krack Matthias wrote:<u></u><u></u></p>
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<span lang="DE-CH" style="font-size:11pt">Hi</span><u></u><u></u></p>
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<span lang="DE-CH" style="font-size:11pt"> </span><u></u><u></u></p>
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<span lang="EN-US" style="font-size:11pt">I cannot reproduce the error with the provided input. I get the error that the distance between the atoms 26 and 19 is zero.
</span><u></u><u></u></p>
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<span lang="EN-US" style="font-size:11pt"> </span><u></u><u></u></p>
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<span lang="EN-US" style="font-size:11pt">Best</span><u></u><u></u></p>
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<span lang="EN-US" style="font-size:11pt"> </span><u></u><u></u></p>
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<span lang="EN-US" style="font-size:11pt">M.</span><u></u><u></u></p>
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<span lang="EN-US" style="font-size:11pt"> </span><u></u><u></u></p>
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<b><span style="color:black">From: </span></b><span style="color:black"><span class="m_-7684452582722967821MsoHyperlink"><a href="mailto:cp...@googlegroups.com" target="_blank">cp...@googlegroups.com</a></span> <<span class="m_-7684452582722967821MsoHyperlink"><a href="mailto:cp...@googlegroups.com" target="_blank">cp...@googlegroups.com</a></span>> on behalf of Anirudh Natarajan <<span class="m_-7684452582722967821MsoHyperlink"><a href="mailto:anirudhna...@gmail.com" target="_blank">anirudhna...@gmail.com</a></span>><br>
<b>Date: </b>Sunday, 20 April 2025 at 13:34<br>
<b>To: </b>cp2k <<span class="m_-7684452582722967821MsoHyperlink"><a href="mailto:cp...@googlegroups.com" target="_blank">cp...@googlegroups.com</a></span>><br>
<b>Subject: </b>[CP2K:21394] CPASSERT qs initialization</span><u></u><u></u></p>
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 *******************************************************************************<br>
 *   ___                                                                       *<br>
 *  /   \                                                                      *<br>
 * [ABORT]                                                                     *<br>
 *  \___/                             CPASSERT failed                          *<br>
 *    |                                                                        *<br>
 *  O/|                                                                        *<br>
 * /| |                                                                        *<br>
 * / \                                                   qs_environment.F:1556 *<br>
 *******************************************************************************<br>
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Can someone help me point out at the exact nature of this error? This happens to be a very repetitive error for me inspite of changing orbitals, smearing, kpoints and so on.
<u></u><u></u></p>
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