PETSc version 3.17.4
This creates the lumped mass matrix associated with the given DM, and a solver to invert it, and stores them in the DMTS context.
PetscErrorCode DMTSCreateRHSMassMatrixLumped(DM dm)
Collective on dm
|dm ||- DM providing the mass matrix
Note: The idea here is that an explicit system can be given a mass matrix, based on the DM, which is inverted on the RHS at each step.
Since the matrix is lumped, inversion is trivial.
DMTSCreateRHSMassMatrix(), DMTSDestroyRHSMassMatrix(), DMCreateMassMatrix(), DMTS
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