22   KSP                solver;  in main()  local
75   PetscCall(KSPCreate(comm, &solver));  in main()
76   PetscCall(KSPSetOperators(solver, A, A));  in main()
78   PetscCall(KSPSetType(solver, KSPCG));  in main()
79   PetscCall(KSPSetInitialGuessNonzero(solver, PETSC_TRUE));  in main()
85   PetscCall(KSPGetPC(solver, &prec));  in main()
89   PetscCall(KSPSetFromOptions(solver));  in main()
90   PetscCall(KSPSetUp(solver));  in main()
106   PetscCall(KSPSolve(solver, B, X));  in main()
107   PetscCall(KSPGetConvergedReason(solver, &reason));  in main()
114     PetscCall(KSPGetIterationNumber(solver, &its));  in main()
121   PetscCall(KSPDestroy(&solver));  in main()