MatComputeBandwidth

Calculate the full bandwidth of the matrix, meaning the width 2k+1 where k diagonals on either side are sufficient to contain all the matrix nonzeros.

Synopsis

#include "petscmat.h"  
PetscErrorCode MatComputeBandwidth(Mat A, PetscReal fraction, PetscInt *bw)

Collective

Input Parameters

• A - The Mat

• fraction - An optional percentage of the Frobenius norm of the matrix that the bandwidth should enclose

Output Parameter

• bw - The matrix bandwidth

See Also

DMPlexCreate(), DMPlexSetConeSize(), DMPlexSetChart()

Level

beginner

Location

src/mat/utils/bandwidth.c

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Index of all Mat routines
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Index of all manual pages