[CP2K-user] [CP2K:18399] Geometry Optimization stops after 200 iterations
Kusum Kumari
itskusumid at gmail.com
Wed Feb 1 05:16:23 UTC 2023
Dear Cp2k community
I am a novice to cp2k software, and i have been trying to optimize a
structure using cp2k but after 200 iterations it gives this result:
* ******************************************************************************* ***
BRENT - NUMBER OF ENERGY EVALUATIONS : 1
*** ******************************************************************************* --------
Informations at step = 200 ------------ Optimization Method =
SD Total Energy = -4001.5866174143
Internal Pressure [bar] = 120.9667651938 Real energy change
= 0.0000065669 Decrease in energy =
NO Used time = 215.869 Convergence check :
Max. step size = 0.0000000000 Conv. limit for step
size = 0.0030000000 Convergence in step size =
YES RMS step size = 0.0000000000 Conv. limit for
RMS step = 0.0015000000 Convergence in RMS step =
YES Max. gradient = 0.0011394985 Conv. limit
for gradients = 0.0004500000 Conv. for gradients =
NO RMS gradient = 0.0001518928 Conv.
limit for RMS grad. = 0.0003000000 Conv. in RMS gradients =
YES Pressure Deviation [bar] = 20.9667651938
Pressure Tolerance [bar] = 100.0000000000 Conv. for PRESSURE
=
YES --------------------------------------------------- *** MAXIMUM NUMBER
OF OPTIMIZATION STEPS REACHED *** *** EXITING GEOMETRY OPTIMIZATION
****
This occurs in all cases where I am taking a metal organic framework, but
the optimization is complete in case of small molecules and is fine.
I have also attached input and xyz file below
Can anyone suggest me a possible suggestion for the COMPLETE GEOEMTRY
OPTIMIZATION.
Any help will be highly appreciated.
Thanks and Regards
Kusum (INDIA).
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