<div>Dear Diganta,</div><div>This CPASSERT is related to a failing Cholesky decomposition. In your case, this may be related to diffuse basis functions making the two-center electron repulsion matrix numerically non-positive definite. You need to add</div><div>&RI</div><div>DO_SVD</div><div>&END</div><div>to your &WF_CORRELATION section. Are you later also interested in force calculation?</div><div>Best,</div><div>Frederick</div><br /><div class="gmail_quote"><div dir="auto" class="gmail_attr">Diganta Dasgupta schrieb am Montag, 13. Oktober 2025 um 01:43:14 UTC+2:<br/></div><blockquote class="gmail_quote" style="margin: 0 0 0 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Greetings,<div><br></div><div>I have been to run single point calculations on a system of 128 waters on cp2k using RPA using the cc-TZ and RI-TZ primary and auxilliary basis sets respectively with a GTH-PBE pseudopotential. However after some period of running the calculations crash with a messege saying : CPASSERT failed - mp2_ri_2c.F:1441. The attached folder contains all the files from a run. I have tried changing MGRID cutoff, the EPS and MEMORY settings but to no avail. I'm new to this and may be making some obvious mistakes. Any guidance in this regard is greatly appreciated.<br><br>Best regards,</div><div>Diganta</div></blockquote></div>
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