1e0ed867bSAlp Dener #include <../src/tao/bound/impls/bqnk/bqnk.h> 2e0ed867bSAlp Dener 33850be85SAlp Dener /*MC 43850be85SAlp Dener TAOBQNKTL - Bounded Quasi-Newton-Krylov Trust-region with Line-search fallback, for nonlinear 53850be85SAlp Dener minimization with bound constraints. This method approximates the Hessian-vector 63850be85SAlp Dener product using a limited-memory quasi-Newton formula, and iteratively inverts the 73850be85SAlp Dener Hessian with a Krylov solver. The quasi-Newton matrix and its settings can be 83850be85SAlp Dener accessed via the prefix `-tao_bqnk_` 93850be85SAlp Dener 103850be85SAlp Dener Options Database Keys: 113850be85SAlp Dener + -tao_bqnk_max_cg_its - maximum number of bounded conjugate-gradient iterations taken in each Newton loop 123850be85SAlp Dener . -tao_bqnk_init_type - trust radius initialization method ("constant", "direction", "interpolation") 133850be85SAlp Dener . -tao_bqnk_update_type - trust radius update method ("step", "direction", "interpolation") 143850be85SAlp Dener - -tao_bqnk_as_type - active-set estimation method ("none", "bertsekas") 153850be85SAlp Dener 163850be85SAlp Dener Level: beginner 173850be85SAlp Dener M*/ 18e0ed867bSAlp Dener PETSC_EXTERN PetscErrorCode TaoCreate_BQNKTL(Tao tao) 19e0ed867bSAlp Dener { 20*414d97d3SAlp Dener TAO_BNK *bnk; 21*414d97d3SAlp Dener TAO_BQNK *bqnk; 22e0ed867bSAlp Dener PetscErrorCode ierr; 23e0ed867bSAlp Dener 24e0ed867bSAlp Dener PetscFunctionBegin; 25e0ed867bSAlp Dener ierr = TaoCreate_BQNK(tao);CHKERRQ(ierr); 26*414d97d3SAlp Dener bnk = (TAO_BNK*)tao->data; 27*414d97d3SAlp Dener bqnk = (TAO_BQNK*)bnk->ctx; 28*414d97d3SAlp Dener bqnk->solve = TaoSolve_BNTL; 29e0ed867bSAlp Dener PetscFunctionReturn(0); 30e0ed867bSAlp Dener } 31