Dear CP2K experts<div><br /></div><div>As CP2K beginner, I tried to do cell optimization for zeolite Beta-A unit cell (downloaded from IZA database), but I got error message "Cholesky decompose failed: the matrix is not positive definite or ill-conditioned." when the program performs preconditioner for SCF wavefunction optimization. I am not sure this is caused by bad geometry since Beta-A is directly downloaded from IZA database.</div><div><br /></div><div>Beta_A.xyz, input and output are attached.<br /></div><div><br /></div><div><span style="color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-size: 16px;">I can turn the PRECONDITIONER OFF, but it cannot converge.</span><br /></div><div><br /></div><div>After expanding the unit cell by <span style="font-family: Calibri, sans-serif; font-size: 12pt;"> </span><span lang="EN-US" style="font-family: Calibri, sans-serif; font-size: 12pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; color: black;">2 × 2 × 1 to a </span><span style="color: black; font-family: Calibri, sans-serif; font-size: 12pt;">25.4 × 25.4 × 26.4 Å</span><sup style="color: black; font-family: Calibri, sans-serif;"><span style="border: 1pt none windowtext; padding: 0cm;">3</span></sup><span style="color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-size: 16px;"> supercell (</span>Beta_A_221_cellopt.xyz<span style="color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-size: 16px;">), cell optimization can be performed. However, I want to use unit cell for NEB and DIMER. Can someone resolve the issue?</span></div><div><span style="color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-size: 16px;"><br /></span></div><div>Much appreciation for your help!</div>
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