summer 2022 work- LBC halo cleanup

Context

The aim of this development is to be able to use lbc_lnk with (potentially multiple) arrays that have different shapes for any of their dimensions, including for dimension 1 and 2 (because the arrays can include 0, 1 or 2 halos).

Proposal

This work will be done in several steps:

• update/replace the arrays m[ij]g and m[ij][01] so they work with arrays containing 0 to nn_hls halos. This 1D arrays are replaced by 2D arrays, the second dimension being the halo size.
  By default we therefore replace everywhere:

  • mig(ji) by mig(ji,nn_hls). Same story for mjg
  • mig0(ji) by mig(ji,0) and suppress mig0. Same story for mjg0
  • mi0(ji) by mi0(ji,nn_hls). Same story for mi1, mj0, mj1

• update basic ew/ns communications: lbc_lnk_pt2pt_generic

• update NP folding: update lbc_nfd_generic.h90 and mpp_nfd_generic

• update neighborhood collective communications: lbc_lnk_neicoll_generic.h90