I started with a small varmin calculation (a couple of thousand configs).

Then I added a varmin_linjas calculation using more configs. Interestingly, I see the following:

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`VMC #1: E = -1295.332(6) ; var = 29.14(8) (correlation.out.0)`

VMC #2: E = -1294.920(6) ; var = 33.87(8) (correlation.out.1)

VMC #3: E = -1295.130(6) ; var = 30.28(7) (correlation.out.2)

VMC #4: E = -1295.054(6) ; var = 31.9(1) (correlation.out.3)

VMC #5: E = -1295.091(6) ; var = 31.00(7) (correlation.out.4)

VMC #6: E = -1295.057(6) ; var = 31.51(9) (correlation.out.5)

i.e. the energy and variance increase sharply in the first iteration, just to go down again later on. The low value from correlation.out.0 (i.e. the Jastrow resulting from varmin) is, however, never reached again. This kind of does not sound logic to me. May it be related to the use of PPs (I am using opt_fixnl=F)? I did n not only observe this once...

Thanks for any suggestions as to why I see this behaviour.