Constrained derivatives.

General discussion of quantum Monte Carlo in electronic structure theory
Vladimir_Konjkov
Posts: 188
Joined: Wed Apr 15, 2015 3:14 pm

Re: Constrained derivatives.

Post by Vladimir_Konjkov »

Unfortunately, the calculation of 3-rd partial derivatives of the slater determinant w.r.t e-coordinates do not fit in the L1/L2 cache
even for moderately large system like Kr-atom.
I ran perf stat -e instructions,cache-misses <executable> and confirmed my assumptions.
I don't see such cache-misses in the Casino with numerical differentiation.
dark matter makes up most of something
but no one knows exactly what
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