1 #include <../src/tao/bound/impls/bqnk/bqnk.h> 2 3 static PetscErrorCode TaoSetUp_BQNKTL(Tao tao) 4 { 5 KSP ksp; 6 PetscVoidFunction valid; 7 8 PetscFunctionBegin; 9 PetscCall(TaoSetUp_BQNK(tao)); 10 PetscCall(TaoGetKSP(tao, &ksp)); 11 PetscCall(PetscObjectQueryFunction((PetscObject)ksp, "KSPCGSetRadius_C", &valid)); 12 PetscCheck(valid, PetscObjectComm((PetscObject)tao), PETSC_ERR_SUP, "Not for KSP type %s. Must use a trust-region CG method for KSP (e.g. KSPNASH, KSPSTCG, KSPGLTR)", ((PetscObject)ksp)->type_name); 13 PetscFunctionReturn(0); 14 } 15 16 /*MC 17 TAOBQNKTL - Bounded Quasi-Newton-Krylov Trust-region with Line-search fallback, for nonlinear 18 minimization with bound constraints. This method approximates the Hessian-vector 19 product using a limited-memory quasi-Newton formula, and iteratively inverts the 20 Hessian with a Krylov solver. The quasi-Newton matrix and its settings can be 21 accessed via the prefix `-tao_bqnk_`. For options database, see TAOBNK 22 23 Level: beginner 24 .seealso `TAOBNK`, `TAOBQNKTR`, `TAOBQNKLS` 25 M*/ 26 PETSC_EXTERN PetscErrorCode TaoCreate_BQNKTL(Tao tao) 27 { 28 TAO_BNK *bnk; 29 TAO_BQNK *bqnk; 30 31 PetscFunctionBegin; 32 PetscCall(TaoCreate_BQNK(tao)); 33 tao->ops->setup = TaoSetUp_BQNKTL; 34 bnk = (TAO_BNK *)tao->data; 35 bqnk = (TAO_BQNK *)bnk->ctx; 36 bqnk->solve = TaoSolve_BNTL; 37 PetscFunctionReturn(0); 38 } 39