1 #pragma once 2 3 #include <petsc/private/pcisimpl.h> 4 5 /* 6 Private context (data structure) for the NN preconditioner. 7 */ 8 typedef struct { 9 /* First MUST come the following line, for the stuff that is common to FETI and Neumann-Neumann. */ 10 PC_IS pcis; 11 12 /* Then, everything else. */ 13 Mat coarse_mat; 14 Vec coarse_x; 15 Vec coarse_b; 16 KSP ksp_coarse; 17 PetscScalar **DZ_IN; /* proc[k].DZ_IN[i][] = bit of vector to be received from processor i by proc. k */ 18 PetscScalar factor_coarse_rhs; 19 } PC_NN; 20 21 PETSC_EXTERN PetscErrorCode PCNNCreateCoarseMatrix(PC); 22 PETSC_EXTERN PetscErrorCode PCNNApplySchurToChunk(PC pc, PetscInt n, PetscInt *idx, PetscScalar *chunk, PetscScalar *array_N, Vec vec1_B, Vec vec2_B, Vec vec1_D, Vec vec2_D); 23 PETSC_EXTERN PetscErrorCode PCNNApplyInterfacePreconditioner(PC pc, Vec r, Vec z, PetscScalar *work_N, Vec vec1_B, Vec vec2_B, Vec vec3_B, Vec vec1_D, Vec vec2_D, Vec vec1_N, Vec vec2_N); 24 PETSC_EXTERN PetscErrorCode PCNNBalancing(PC pc, Vec r, Vec u, Vec z, Vec vec1_B, Vec vec2_B, Vec vec3_B, Vec vec1_D, Vec vec2_D, PetscScalar *work_N); 25