(Optional) Set the max number of nonzeros to expect in each row of the diagonal and off-diagonal blocks. The diagonal block is the submatrix whose column numbers correspond to rows owned by this process, and the off-diagonal block is everything else. The arrays diag_sizes and offdiag_sizes contain estimated sizes for each row of the diagonal and off-diagonal blocks, respectively. This routine can significantly improve the efficiency of matrix construction, and should always be utilized if possible.alphabetic index hierarchy of classesNot collective.
generated by doc++