PetscErrorCode DMMGSetSNESLocal(DMMG *dmmg,DALocalFunction1 function, DALocalFunction1 jacobian, DALocalFunction1 ad_function, DALocalFunction1 admf_function);
dmmg | - the context | |
function | - the function that defines the nonlinear system | |
jacobian | - function defines the local part of the Jacobian | |
ad_function | - the name of the function with an ad_ prefix. This is ignored if ADIC is not installed | |
admf_function | - the name of the function with an ad_ prefix. This is ignored if ADIC is not installed |
If ADIC/ADIFOR have not been installed and the Jacobian is not provided, this routine uses finite differencing to approximate the Jacobian.
Level:intermediate
Location:src/snes/utils/damgsnes.c
Index of all DA routines
Table of Contents for all manual pages
Index of all manual pages
-dmmg_snes_monitor | - . -dmmg_jacobian_fd | |
-dmmg_jacobian_ad | - . -dmmg_jacobian_mf_fd_operator | |
-dmmg_jacobian_mf_fd | - . -dmmg_jacobian_mf_ad_operator | |
-dmmg_jacobian_mf_ad | - - -dmmg_jacobian_period <p> - Indicates how often in the SNES solve the Jacobian is recomputed (on all levels) as suggested by Florin Dobrian if p is -1 then Jacobian is computed only on first SNES iteration (i.e. -1 is equivalent to infinity) |