[CP2K-user] [CP2K:20978] ENERGY_FORCE calculation not converging on same ENERGY runs

Hezhou Zhang lzhanghz at uchicago.edu
Mon Dec 16 23:06:15 UTC 2024


Dear CP2K community,

I'm benchmarking a UKS calculation on a small system. By only changing 
GLOBAL RUNTYPE from ENERGY to ENERGY_FORCE and printing FORCE in 
FORCE_EVAL, the calculations that successfully converged on ENERGY 
calculations failed to converge in ENERGY_FORCE, and gave a drastically 
wrong energy. This occurred in versions 7.1 and 2023.2 seemingly randomly, 
but I haven't tried others. Any idea why this is happening? Thank you all!

Regards,
Hezhou

[image: Screenshot 2024-12-16 170212.png]

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