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Add tail correction for hoomd #137

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merged 32 commits into from
Oct 20, 2021

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jennyfothergill
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jennyfothergill and others added 29 commits September 10, 2021 11:20
- noticed restart wasn't working
- Using gsd.hoomd.Snapshot to initialize does not retain step
information
- See glotzerlab/hoomd-blue#1135
Our initial results from the TraPPE United-Atom methane simulations
(`MethaneUA`) had discrepancies on the order of a few percentage points
for the density values when comparing MD vs MC simulations.

This appears to be a factor due to long range corrections (tail
corrections) and how the potential is truncated at the cutoff (abruptly
change to 0 once you reach r_cut) or shifted (a constant term is applied
to make the value of the potential at r_cut 0).

A subproject has been created to further explore this for MethaneUA for
all engines that support LRC and shifted potentials. This PR sets up the
groundwork for this.
…er/reproducibility_study into feat/hoomd-lrc
@justinGilmer justinGilmer merged commit 802736f into mosdef-hub:main Oct 20, 2021
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2 participants