119653cdaSPeter Brune #ifndef _SNESNGMRES_H 219653cdaSPeter Brune #define _SNESNGMRES_H 319653cdaSPeter Brune 419653cdaSPeter Brune #include <private/snesimpl.h> 519653cdaSPeter Brune 619653cdaSPeter Brune /* Data structure for the Nonlinear GMRES method. */ 719653cdaSPeter Brune typedef struct { 819653cdaSPeter Brune 998b3e84cSPeter Brune /* Solver parameters and counters */ 1098b3e84cSPeter Brune PetscInt msize; /* maximum size of krylov space */ 11*28ed4a04SPeter Brune PetscInt restart_it; /* number of iterations the restart conditions persist before restart */ 12dfbf837cSBarry Smith PetscViewer monitor; /* debugging output for NGMRES */ 13*28ed4a04SPeter Brune 1498b3e84cSPeter Brune /* History and subspace data */ 15f109b39eSPeter Brune Vec *Fdot; /* residual history -- length msize */ 16f109b39eSPeter Brune Vec *Xdot; /* solution history -- length msize */ 17f109b39eSPeter Brune PetscReal *fnorms; /* the residual norm history */ 1819653cdaSPeter Brune 1998b3e84cSPeter Brune /* General minimization problem context */ 2098b3e84cSPeter Brune PetscScalar *h; /* the constraint matrix */ 2198b3e84cSPeter Brune PetscScalar *beta; /* rhs for the minimization problem */ 2298b3e84cSPeter Brune PetscScalar *xi; /* the dot-product of the current and previous res. */ 2319653cdaSPeter Brune 2498b3e84cSPeter Brune /* Selection constants */ 259f425c49SPeter Brune PetscBool additive; /* use additive variant instead of selection */ 2698b3e84cSPeter Brune PetscReal gammaA; /* Criterion A residual tolerance */ 2798b3e84cSPeter Brune PetscReal epsilonB; /* Criterion B difference tolerance */ 2898b3e84cSPeter Brune PetscReal deltaB; /* Criterion B residual tolerance */ 2998b3e84cSPeter Brune PetscReal gammaC; /* Restart residual tolerance */ 3019653cdaSPeter Brune 3198b3e84cSPeter Brune /* LS Minimization solve context */ 3298b3e84cSPeter Brune PetscScalar *q; /* the matrix formed as q_ij = (rdot_i, rdot_j) */ 3398b3e84cSPeter Brune PetscBLASInt m; /* matrix dimension */ 3498b3e84cSPeter Brune PetscBLASInt n; /* matrix dimension */ 3598b3e84cSPeter Brune PetscBLASInt nrhs; /* the number of right hand sides */ 3698b3e84cSPeter Brune PetscBLASInt lda; /* the padded matrix dimension */ 3798b3e84cSPeter Brune PetscBLASInt ldb; /* the padded vector dimension */ 3898b3e84cSPeter Brune PetscReal *s; /* the singular values */ 3998b3e84cSPeter Brune PetscReal rcond; /* the exit condition */ 4098b3e84cSPeter Brune PetscBLASInt rank; /* the effective rank */ 4198b3e84cSPeter Brune PetscScalar *work; /* the work vector */ 4298b3e84cSPeter Brune PetscReal *rwork; /* the real work vector used for complex */ 4398b3e84cSPeter Brune PetscBLASInt lwork; /* the size of the work vector */ 4498b3e84cSPeter Brune PetscBLASInt info; /* the output condition */ 4519653cdaSPeter Brune 4619653cdaSPeter Brune } SNES_NGMRES; 4719653cdaSPeter Brune 4819653cdaSPeter Brune #define H(i,j) ngmres->h[i*ngmres->msize + j] 4919653cdaSPeter Brune #define Q(i,j) ngmres->q[i*ngmres->msize + j] 5019653cdaSPeter Brune 5119653cdaSPeter Brune #endif 52