• mattijs's avatar
    ENH: regionSplit: improve algorithm order · ffddf4e5
    mattijs authored
    The old version of regionSplit would hand out regions one by one. This
    is a big problem when there are lots of regions - the extreme being
    in the decompositionMethods, where it is used to cluster cells and most clusters
    being only one cell. This rewrite uses a mesh wave to determine disconnected
    regions in one go. This produced non-compact numbering which is then compacted
    in a second phase.
    On a 14M cell case with cyclic constraints this reduced decompose
    time from 40 mins down to 5.
    ffddf4e5
regionSplit.C 12.9 KB