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NCPP / ocgis

OpenClimateGIS is a set of geoprocessing and calculation tools for CF-compliant climate datasets.
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Empty rank list should create a null communicator #452

Closed bekozi closed 7 years ago

bekozi commented 7 years ago

An empty rank list to OcgVM.create_subcomm should create a null communicator. It is unclear how mpi4py treats an empty rank list.