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Named Constants

psb_none_
Generic no-op;
psb_nohalo_
Do not fetch halo elements;
psb_halo_
Fetch halo elements from neighbouring processes;
psb_sum_
Sum overlapped elements
psb_avg_
Average overlapped elements
psb_comm_halo_
Exchange data based on the halo_index list;
psb_comm_ext_
Exchange data based on the ext_index list;
psb_comm_ovr_
Exchange data based on the ovrlap_index list;
psb_comm_mov_
Exchange data based on the ovr_mst_idx list;