10   Vec         xschur, bschur, uschur;  in main()  local
194       PetscCall(MatCreateVecs(S, &xschur, &bschur));  in main()
198     if (!cuda) PetscCall(MatCreateVecs(S, &xschur, &bschur));  in main()
199     PetscCall(VecDuplicate(xschur, &uschur));  in main()
230       PetscCall(VecSetRandom(xschur, rand));  in main()
231       PetscCall(VecCopy(xschur, uschur));  in main()
233         PetscCall(MatMult(S, xschur, bschur));  in main()
234         PetscCall(MatFactorSolveSchurComplement(F, bschur, xschur));  in main()
236         PetscCall(MatMultTranspose(S, xschur, bschur));  in main()
237         PetscCall(MatFactorSolveSchurComplementTranspose(F, bschur, xschur));  in main()
240       PetscCall(VecAXPY(uschur, -1.0, xschur)); /* u <- (-1.0)x + u */  in main()
245           PetscCall(MatMult(S, xschur, uschur)); /* u = A*x */  in main()
247           PetscCall(MatMultTranspose(S, xschur, uschur)); /* u = A*x */  in main()
304     PetscCall(VecDestroy(&xschur));  in main()