PETSc version 3.15.5
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 on Mat
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
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages