DMCreateMassMatrixLumped#

Gets the lumped mass matrix for a given DM

Synopsis#

#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode DMCreateMassMatrixLumped(DM dm, Vec *llm, Vec *lm)

Collective

Input Parameter#

dm - the DM object

Output Parameters#

llm - the local lumped mass matrix, which is a diagonal matrix, represented as a vector
lm - the global lumped mass matrix, which is a diagonal matrix, represented as a vector

Note#

See DMCreateMassMatrix() for how to create the non-lumped version of the mass matrix.

See Also#

DM Basics, DM, DMCreateMassMatrix(), DMCreateMatrix(), DMRefine(), DMCoarsen(), DMCreateRestriction(), DMCreateInterpolation(), DMCreateInjection()

Level#

developer

Location#

src/dm/interface/dm.c

Examples#

src/ts/tutorials/ex30.c

Implementations#

DMCreateMassMatrixLumped_Plex() in src/dm/impls/plex/plex.c

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Index of all manual pages