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Nek5000 / gslib

sparse communication library
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Extend findpts_eval() to perform interpolation on the source rank #29

Open stgeke opened 5 years ago

stgeke commented 5 years ago

Currently the interpolation step is performed on the target rank i.e. not on the source rank where interpolation points are stored. For large ratios of source/target ranks the interpolation step becomes a critical bottleneck. To resolve this we should support a different mode where the interpolation step is performed on the source rank.