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

Examples

src/dm/impls/swarm/tutorials/ex1.c.html

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Index of all DMSwarm routines
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