1 #include <../src/tao/complementarity/impls/ssls/ssls.h> 2 3 /*------------------------------------------------------------*/ 4 #undef __FUNCT__ 5 #define __FUNCT__ "TaoSetFromOptions_SSLS" 6 PetscErrorCode TaoSetFromOptions_SSLS(Tao tao) 7 { 8 TAO_SSLS *ssls = (TAO_SSLS *)tao->data; 9 PetscErrorCode ierr; 10 PetscBool flg; 11 12 PetscFunctionBegin; 13 ierr = PetscOptionsHead("Semismooth method with a linesearch for complementarity problems");CHKERRQ(ierr); 14 ierr = PetscOptionsReal("-ssls_delta", "descent test fraction", "",ssls->delta, &(ssls->delta), &flg);CHKERRQ(ierr); 15 ierr = PetscOptionsReal("-ssls_rho", "descent test power", "",ssls->rho, &(ssls->rho), &flg);CHKERRQ(ierr); 16 ierr = TaoLineSearchSetFromOptions(tao->linesearch);CHKERRQ(ierr); 17 ierr = KSPSetFromOptions(tao->ksp);CHKERRQ(ierr); 18 ierr = PetscOptionsTail();CHKERRQ(ierr); 19 PetscFunctionReturn(0); 20 } 21 22 /*------------------------------------------------------------*/ 23 #undef __FUNCT__ 24 #define __FUNCT__ "TaoView_SSLS" 25 PetscErrorCode TaoView_SSLS(Tao tao, PetscViewer pv) 26 { 27 PetscFunctionBegin; 28 PetscFunctionReturn(0); 29 } 30 31 /*------------------------------------------------------------*/ 32 #undef __FUNCT__ 33 #define __FUNCT__ "Tao_SSLS_Function" 34 PetscErrorCode Tao_SSLS_Function(TaoLineSearch ls, Vec X, PetscReal *fcn, void *ptr) 35 { 36 Tao tao = (Tao)ptr; 37 TAO_SSLS *ssls = (TAO_SSLS *)tao->data; 38 PetscErrorCode ierr; 39 40 PetscFunctionBegin; 41 ierr = TaoComputeConstraints(tao, X, tao->constraints);CHKERRQ(ierr); 42 ierr = VecFischer(X,tao->constraints,tao->XL,tao->XU,ssls->ff);CHKERRQ(ierr); 43 ierr = VecNorm(ssls->ff,NORM_2,&ssls->merit);CHKERRQ(ierr); 44 *fcn = 0.5*ssls->merit*ssls->merit; 45 PetscFunctionReturn(0); 46 } 47 48 /*------------------------------------------------------------*/ 49 #undef __FUNCT__ 50 #define __FUNCT__ "Tao_SSLS_FunctionGradient" 51 PetscErrorCode Tao_SSLS_FunctionGradient(TaoLineSearch ls, Vec X, PetscReal *fcn, Vec G, void *ptr) 52 { 53 Tao tao = (Tao)ptr; 54 TAO_SSLS *ssls = (TAO_SSLS *)tao->data; 55 PetscErrorCode ierr; 56 57 PetscFunctionBegin; 58 ierr = TaoComputeConstraints(tao, X, tao->constraints);CHKERRQ(ierr); 59 ierr = VecFischer(X,tao->constraints,tao->XL,tao->XU,ssls->ff);CHKERRQ(ierr); 60 ierr = VecNorm(ssls->ff,NORM_2,&ssls->merit);CHKERRQ(ierr); 61 *fcn = 0.5*ssls->merit*ssls->merit; 62 63 ierr = TaoComputeJacobian(tao,tao->solution,tao->jacobian,tao->jacobian_pre);CHKERRQ(ierr); 64 65 ierr = MatDFischer(tao->jacobian, tao->solution, tao->constraints,tao->XL, tao->XU, ssls->t1, ssls->t2,ssls->da, ssls->db);CHKERRQ(ierr); 66 ierr = MatDiagonalScale(tao->jacobian,ssls->db,NULL);CHKERRQ(ierr); 67 ierr = MatDiagonalSet(tao->jacobian,ssls->da,ADD_VALUES);CHKERRQ(ierr); 68 ierr = MatMultTranspose(tao->jacobian,ssls->ff,G);CHKERRQ(ierr); 69 PetscFunctionReturn(0); 70 } 71 72