int SNESGetJacobian(SNES snes,Mat *A,Mat *B, void **ctx)Not Collective, but Mat object will be parallel if SNES object is
A | - location to stash Jacobian matrix (or PETSC_NULL) |
B | - location to stash preconditioner matrix (or PETSC_NULL) |
ctx | - location to stash Jacobian ctx (or PETSC_NULL) |
Location: src/snes/interface/snes.c
SNES Index
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