8000 Replica exchange Hamiltonian swaps as bias by pdobbelaere · Pull Request #90 · molmod/psiflow · GitHub
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Replica exchange Hamiltonian swaps as bias #90

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merged 8 commits into from
Jun 30, 2025

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@pdobbelaere pdobbelaere commented Jun 26, 2025

In i-Pi REX, force components under the <forces> tag are not swapped between replicas. Only force components under the <bias> tag can be exchanged (along with ensemble variables).

Here, we check the Hamiltonian of every replica, listing shared components (e.g., MACEHamiltonian) under <forces> and specific components (e.g., umbrella PlumedHamiltonian) under <bias>.

fixes #87

@pdobbelaere pdobbelaere merged commit 7147d82 into molmod:main Jun 30, 2025
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Replica exchange between hamiltonians does not swap them
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