petsc-3.14.6 2021-03-30
DMSwarmCreateMassMatrixSquare
Creates the block-diagonal of the square, M^T_p M_p, of the particle mass matrix M_p
Synopsis
#include "petscdmswarm.h"
PetscErrorCode DMSwarmCreateMassMatrixSquare(DM dmCoarse, DM dmFine, Mat *mass)
Collective on dmCoarse
Input parameters
| dmCoarse | - a DMSwarm
|
| dmFine | - a DMPlex
|
Output parameter
| mass | - the square of the particle mass matrix
|
Notes
We only compute the block diagonal since this provides a good preconditioner and is completely local. It would be possible in the
future to compute the full normal equations.
See Also
DMCreateMassMatrix()
Level
advanced
Location
src/dm/impls/swarm/swarm.c
Index of all DMSWARM routines
Table of Contents for all manual pages
Index of all manual pages