# MATSEQBAIJ#

MATSEQBAIJ = “seqbaij” - A matrix type to be used for sequential block sparse matrices, based on block sparse compressed row format.

## Options Database Keys#

• -mat_type seqbaij - sets the matrix type to “seqbaij” during a call to MatSetFromOptions()

• -mat_baij_mult_version version - indicate the version of the matrix-vector product to use (0 often indicates using BLAS)

## Notes#

MatSetOptions(,MAT_STRUCTURE_ONLY,PETSC_TRUE) may be called for this matrix type. In this no space is allocated for the nonzero entries and any entries passed with MatSetValues() are ignored

Run with -info to see what version of the matrix-vector product is being used

MatCreateSeqBAIJ()