Lines Matching refs:Pmat

1128 . Pmat - matrix from which preconditioner is to be constructed (usually the same as `Amat`)
1137   The `TS` solver may modify the nonzero structure and the entries of the matrices `Amat` and `Pmat` between the calls to `f()`
1143 PetscErrorCode TSSetRHSJacobian(TS ts, Mat Amat, Mat Pmat, TSRHSJacobianFn *f, PetscCtx ctx)
1152   if (Pmat) PetscValidHeaderSpecific(Pmat, MAT_CLASSID, 3);
1154   if (Pmat) PetscCheckSameComm(ts, 1, Pmat, 3);
1160   if (!ijacobian) PetscCall(SNESSetJacobian(snes, Amat, Pmat, SNESTSFormJacobian, ts));
1166   if (Pmat) {
1167     PetscCall(PetscObjectReference((PetscObject)Pmat));
1169     ts->Brhs = Pmat;
1287 . Pmat - matrix used to compute preconditioner (usually the same as `Amat`)
1294   The matrices `Amat` and `Pmat` are exactly the matrices that are used by `SNES` for the nonlinear solve.
1308   The TS solver may modify the nonzero structure and the entries of the matrices `Amat` and `Pmat` between the calls to `f`
1317 PetscErrorCode TSSetIJacobian(TS ts, Mat Amat, Mat Pmat, TSIJacobianFn *f, PetscCtx ctx)
1325   if (Pmat) PetscValidHeaderSpecific(Pmat, MAT_CLASSID, 3);
1327   if (Pmat) PetscCheckSameComm(ts, 1, Pmat, 3);
1333   PetscCall(SNESSetJacobian(snes, Amat, Pmat, SNESTSFormJacobian, ts));
2521     Mat  Amat, Pmat;
2524     PetscCall(SNESGetJacobian(snes, &Amat, &Pmat, NULL, NULL));
2533     if (Pmat && Pmat == ts->Brhs) {
2534       PetscCall(MatDuplicate(ts->Brhs, MAT_COPY_VALUES, &Pmat));
2535       PetscCall(SNESSetJacobian(snes, NULL, Pmat, NULL, NULL));
2536       PetscCall(MatDestroy(&Pmat));
4416 . Pmat - The matrix from which the preconditioner is constructed, usually the same as `Amat`  (or `NULL`)
4428 PetscErrorCode TSGetRHSJacobian(TS ts, Mat *Amat, Mat *Pmat, TSRHSJacobianFn **func, PetscCtxRt ctx)
4433   if (Amat || Pmat) {
4437     PetscCall(SNESGetJacobian(snes, Amat, Pmat, NULL, NULL));
4454 . Pmat - The matrix from which the preconditioner is constructed, often the same as `Amat`
4465 PetscErrorCode TSGetIJacobian(TS ts, Mat *Amat, Mat *Pmat, TSIJacobianFn **f, PetscCtxRt ctx)
4470   if (Amat || Pmat) {
4474     PetscCall(SNESGetJacobian(snes, Amat, Pmat, NULL, NULL));