<div style="box-sizing: border-box; padding: 0px; position: relative; color: rgb(128, 0, 128); font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif; font-variant-ligatures: no-contextual;"><div style="color: var(--dsw-alias-label-primary);"><p style="margin: 0px 0px 16px;"><span style="color: var(--dsw-alias-label-primary);">To the CP2K Development Team,</span></p></div></div><div style="box-sizing: border-box; padding: 0px; position: relative; color: rgb(128, 0, 128); font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif; font-variant-ligatures: no-contextual;"><div style="color: var(--dsw-alias-label-primary);"><p style="margin: 16px 0px;">Hello,</p><p style="margin: 16px 0px;">I am a beginner in DFT calculations and am currently learning to use CP2K for calculations with the PBE0 hybrid functional. My research involves a Mo-doped NiFe-LDH system. I have constructed a 6×8×3 supercell containing a total of 720 atoms. Given the significant presence of Ni, Fe, and O in the system, when using the GTH pseudopotential with the DZVP-MOLOPT-SR basis set, convergence was only achieved with very high values of CUTOFF and REL_CUTOFF. Therefore, I intend to use the GAPW method to reduce computational cost and improve accuracy.</p><p style="margin: 16px 0px;">Currently, I am employing the pob-TZVP-rev2 basis set for all-electron calculations, along with pob-DZVP-rev2 as the ADMM basis set to accelerate the hybrid functional calculation. During the calculation, I first performed a pure functional calculation using the pob-TZVP-rev2 basis set. Then, I used the wavefunction generated from this calculation as the initial guess for the hybrid functional calculation. Unfortunately, the hybrid functional calculation does not seem to proceed—after running continuously for 4 hours, the calculation remains stuck at the interface shown in the attached image and does not appear to enter the self-consistent iteration process.</p><p style="margin: 16px 0px;">The supercomputer I am using is equipped with Intel Xeon Platinum Processors (3rd Gen, 64 cores) and 256 GB of memory. I would like to ask the developers for their insight into the following:</p><ol start="1" style="margin: 16px 0px; padding-left: 18px;"><li><p style="margin: 0px;">What might be causing this issue?</p></li><li style="margin-top: 6px;"><p style="margin: 0px;">How should hybrid functional calculations be conducted for such a system?</p></li><li style="margin-top: 6px;"><p style="margin: 0px;">Could you recommend a more suitable basis set for this system?</p></li></ol><p style="margin: 16px 0px;">For your reference, I have attached the input and output files from my CP2K calculation at the end of this email.</p><p style="margin: 16px 0px;">Thank you for your attention and assistance.</p><p style="margin: 16px 0px 0px;">Best regards,</p><p style="margin: 16px 0px 0px;">yisichi</p><p style="margin: 16px 0px 0px;"><img alt="微信图片_20260122004005_251_55.png" width="534px" height="314px" src="cid:655cc7f9-8389-4d6f-8107-b9126170d3d4" /><br /></p></div></div>
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