|- the offset of the local processor in the global numbering|
|- the usual processor information|
- the number of global rows
For example, processor 0 has 10 rows and an offset of 0, processor 1 has 3 rows and an offset of 10 and processor 2 has 4 rows and an offset of 13 (there are 3 processors and 17 rows). The offset mapping (see BSsparse.h) would have the offsets in sorted order with the corresponding processor id. In this way, given a global row number, one could determine the processor on which it lies.
BSoff_map *BSmake_off_map(int offset, BSprocinfo *procinfo, int max)