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Add LJ variant for HalfNeighbor list which uses data replication #8

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crtrott opened this issue Apr 13, 2017 · 2 comments
Open

Add LJ variant for HalfNeighbor list which uses data replication #8

crtrott opened this issue Apr 13, 2017 · 2 comments
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@stanmoore1
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feature request
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FY17 Q4 Deliverable

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@crtrott
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crtrott commented Apr 13, 2017

The OpenMP package in LAMMPS utilizes data replication to avoid write conflicts on the force array. This works very well for small amounts of threads. It may be worthwhile to explore to use a combination of data replication and atomics for higher thread counts (like on GPUs) to reduce the conflict rate while keeping the amount of data replication limited.
@crtrott crtrott added this to the FY17 Q4 Deliverable milestone Apr 13, 2017
@stanmoore1 stanmoore1 self-assigned this Nov 21, 2017
@stanmoore1
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There is a Kokkos ReductionView, see kokkos/kokkos#1225, that is being developed and is nearly finished. That can be used for this.

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See PR #21

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