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

Input parameters#

Output parameter#

  • mass - the square of the particle mass matrix

Note#

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#

DM, DMSWARM, DMCreateMassMatrix()

Level#

advanced

Location#

src/dm/impls/swarm/swarm.c

Examples#

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

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Index of all DMSwarm routines
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Index of all manual pages