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Searched refs:pmgfac (Results 1 – 5 of 5) sorted by relevance

/petsc/src/tao/unconstrained/impls/nls/
H A Dnlsimpl.h61 PetscReal pmgfac; /* Merit function growth factor */ member
H A Dnls.c357 pert = PetscMin(nlsP->pmax, PetscMax(nlsP->pgfac * pert, nlsP->pmgfac * gnorm)); in TaoSolve_NLS()
419 pert = PetscMin(nlsP->pmax, PetscMax(nlsP->pgfac * pert, nlsP->pmgfac * gnorm)); in TaoSolve_NLS()
460 pert = PetscMin(nlsP->pmax, PetscMax(nlsP->pgfac * pert, nlsP->pmgfac * gnorm)); in TaoSolve_NLS()
745 …PetscOptionsReal("-tao_nls_pmgfac", "merit growth factor", "", nlsP->pmgfac, &nlsP->pmgfac, NULL)); in TaoSetFromOptions_NLS()
897 nlsP->pmgfac = 1.0e-1; in TaoCreate_NLS()
/petsc/src/tao/bound/impls/bnk/
H A Dbnk.h88 PetscReal pmgfac; /* Merit function growth factor */ member
H A Dbnk.c582 bnk->pert = PetscMin(bnk->pmax, PetscMax(bnk->pgfac * bnk->pert, bnk->pmgfac * bnk->gnorm)); in TaoBNKSafeguardStep()
644 … bnk->pert = PetscMin(bnk->pmax, PetscMax(bnk->pgfac * bnk->pert, bnk->pmgfac * bnk->gnorm)); in TaoBNKSafeguardStep()
724 bnk->pert = PetscMin(bnk->pmax, PetscMax(bnk->pgfac * bnk->pert, bnk->pmgfac * bnk->gnorm)); in TaoBNKPerformLineSearch()
1084 … "(developer) merit growth factor for Hessian perturbation", "", bnk->pmgfac, &bnk->pmgfac, NULL)); in TaoSetFromOptions_BNK()
1264 bnk->pmgfac = 1.0e-1; in TaoCreate_BNK()
/petsc/doc/manual/
H A Dtao.md963 > | ``pmgfac`` | real | :math:`0.1` | Gradient norm |
1159 …\rho_{k+1} = \min\left\{\text{pmax}, \max\left\{\text{pgfac} * \rho_k, \text{pmgfac} * \|g(x_k)\|\…
1164 with a default value of 10, `pmgfac` by `-tao_nls_pmgfac` with a