<div><br /></div>Hi Lorenzo<div><br /></div><div>Try with a smaller number of <span style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px;"> </span><span style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px;">NLUMO in PDOS, like 50</span></div><div><span style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px;">Regards</span></div><div><span style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px;">Marcella</span></div><div><font color="#000000" face="Menlo"><span style="caret-color: rgb(0, 0, 0); font-size: 11px;"><br /></span></font><br /></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Monday, April 20, 2026 at 6:54:20 PM UTC+2 lagasco...@gmail.com 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;"><p>Good evening,<br>
I am a new user of CP2K. I would like to calculate the atomic PDOS for a coumarin 343 molecule, starting from a RESTART-wfn file of a previous calculation at the PBE level of theory. I have tried various diagonalization methods (CG, DIIS) with different preconditioners (FULL_KINETIC and FULL_SINGLE_INVERSE), but in all cases I obtain an error like this:<br>
“Cholesky decompose failed: the matrix is not positive definite or ill-conditioned.” Here attached the input and output file of my calculation.</p>
<p>How can I solve this problem?<br><br>Thanks in advance for the help<br><br>Best regards<br><br>Lorenzo Lagasco</p><br></blockquote></div>
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