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howto:md [2020/08/21 10:15] – external edit 127.0.0.1howto:md [2021/07/20 19:33] – [How to run Molecular Dynamics] tkuehne
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 Indeed cp2k can use different extrapolations techniques (''FORCE_EVAL%DFT%QS''). Indeed cp2k can use different extrapolations techniques (''FORCE_EVAL%DFT%QS'').
  
-For MD a good guess is ''PS'' with an ''EXTRAPOLATION_ORDER'' of 3. If you are doing something where from one step to the other there is little continuity, (geometry optimization, montecarlo), then something with little continuity like ''LINEAR_PS'' or just the previous density (''USE_PREV_P'') might be better. If you change the particle number then a ''USE_GUESS'' that restarts from scratch with the restart method choosen in ''FORCE_EVAL%DFT%SCF%SCF_GUESS''. The ''ASPC'' extrapolation is used in connection with langevin and a reduced SCF convergence (just on SCF step) and hystory restart to simulate big systems.+For MD a good guess is ''PS'' with an ''EXTRAPOLATION_ORDER'' of 3. If you are doing something where from one step to the other there is little continuity, (geometry optimization, montecarlo), then something with little continuity like ''LINEAR_PS'' or just the previous density (''USE_PREV_P'') might be better. If you change the particle number then a ''USE_GUESS'' that restarts from scratch with the restart method choosen in ''FORCE_EVAL%DFT%SCF%SCF_GUESS''. The ''ASPC'' extrapolation is used in connection with langevin and a reduced SCF convergence (just on SCF step) and history restart to simulate big systems.
  
 ===== Trajectory ===== ===== Trajectory =====
howto/md.txt · Last modified: 2024/01/03 13:10 by oschuett