petsc-3.7.1 2016-05-15
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# MATSEQSBAIJ

MATSEQSBAIJ = "seqsbaij" - A matrix type to be used for sequential symmetric block sparse matrices, based on block compressed sparse row format. Only the upper triangular portion of the matrix is stored. For complex numbers by default this matrix is symmetric, NOT Hermitian symmetric. To make it Hermitian symmetric you Many brcan call MatSetOption(Mat, MAT_HERMITIAN); after MatAssemblyEnd() Many br

### Options Database Keys

. -mat_type seqsbaij - sets the matrix type to "seqsbaij" during a call to MatSetFromOptions() Many br

Notes: By default if you insert values into the lower triangular part of the matrix they are simply ignored (since they are not Many brstored and it is assumed they symmetric to the upper triangular). If you call MatSetOption(Mat,MAT_IGNORE_LOWER_TRIANGULAR,PETSC_FALSE) or use Many brthe options database -mat_ignore_lower_triangular false it will generate an error if you try to set a value in the lower triangular portion. Many br

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.seealso: MatCreateSeqSBAIJ Many br

Level:beginner
Location:src/mat/impls/sbaij/seq/sbaij.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages