DMSNESCheckDiscretization#

Check the discretization error of the exact solution

Synopsis#

#include "petscdmplex.h" 
#include "petscsnes.h"   
PetscErrorCode DMSNESCheckDiscretization(SNES snes, DM dm, PetscReal t, Vec u, PetscReal tol, PetscReal error[])

Input Parameters#

  • snes - the SNES object

  • dm - the DM

  • t - the time

  • u - a DM vector

  • tol - A tolerance for the check, or -1 to print the results instead

Output Parameter#

  • error - An array which holds the discretization error in each field, or NULL

Note#

The user must call PetscDSSetExactSolution() beforehand

Developer Note#

How is this related to PetscConvEst?

See Also#

SNES: Nonlinear Solvers, PetscDSSetExactSolution(), DNSNESCheckFromOptions(), DMSNESCheckResidual(), DMSNESCheckJacobian()

Level#

developer

Location#

src/snes/utils/dmplexsnes.c

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