petsc-master 2020-09-23
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DMTSCheckJacobian

Check the Jacobian of the exact solution against the residual using the Taylor Test

Synopsis

#include "petscdmplex.h" 
#include "petscts.h" 
PetscErrorCode DMTSCheckJacobian(TS ts, DM dm, PetscReal t, Vec u, Vec u_t, PetscReal tol, PetscBool *isLinear, PetscReal *convRate)

Input Parameters

ts - the TS object
dm - the DM
t - the time
u - a DM vector
u_t - a DM vector
tol - A tolerance for the check, or -1 to print the results instead

Output Parameters

isLinear - Flag indicaing that the function looks linear, or NULL
convRate - The rate of convergence of the linear model, or NULL

See Also

DNTSCheckFromOptions(), DMTSCheckResidual(), DNSNESCheckFromOptions(), DMSNESCheckDiscretization(), DMSNESCheckResidual()

Level

developer

Location

src/ts/utils/dmplexts.c
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages