112   MPI_Comm     comm;  member
331   PetscCall(MPI_Allreduce(MPI_IN_PLACE, max_error, 1, MPIU_REAL, MPIU_MAX, op_apply_ctx->comm));  in ComputeErrorMax()
339   MPI_Comm comm;  in main()  local
365   comm = PETSC_COMM_WORLD;  in main()
368   PetscOptionsBegin(comm, NULL, "CEED BPs in PETSc", NULL);  in main()
415   PetscCall(MPI_Comm_size(comm, &size));  in main()
425   PetscCall(MPI_Comm_rank(comm, &rank));  in main()
435   PetscCall(VecCreate(comm, &X));  in main()
451     PetscCall(PetscPrintf(comm,  in main()
517     PetscCall(ISCreateBlock(comm, num_comp_u, l_size, l_to_g_ind, PETSC_OWN_POINTER, &l_to_g_is));  in main()
519 …PetscCall(ISCreateBlock(comm, num_comp_u, l_0_count, l_to_g_ind_0, PETSC_OWN_POINTER, &l_to_g_is_0…  in main()
520     PetscCall(ISCreateBlock(comm, num_comp_u, l_0_count, loc_ind, PETSC_OWN_POINTER, &loc_is));  in main()
538       PetscCall(ISCreateGeneral(comm, count_D, ind_D, PETSC_COPY_VALUES, &is_D));  in main()
644   op_apply_ctx->comm   = comm;  in main()
658 …PetscCall(MatCreateShell(comm, m_nodes[0] * m_nodes[1] * m_nodes[2] * num_comp_u, m_nodes[0] * m_n…  in main()
688   PetscCall(KSPCreate(comm, &ksp));  in main()
708   PetscCall(MPI_Allreduce(MPI_IN_PLACE, &my_rt, 1, MPI_DOUBLE, MPI_MIN, comm));  in main()
744       PetscCall(PetscPrintf(comm,  in main()
753       PetscCall(PetscPrintf(comm, "  Performance:\n"));  in main()
760         PetscCall(MPI_Allreduce(&my_rt, &rt_min, 1, MPI_DOUBLE, MPI_MIN, comm));  in main()
761         PetscCall(MPI_Allreduce(&my_rt, &rt_max, 1, MPI_DOUBLE, MPI_MAX, comm));  in main()
762         PetscCall(PetscPrintf(comm,  in main()
769 …PetscCall(PetscPrintf(comm, "    DoFs/Sec in CG                     : %g (%g) million\n", 1e-6 * g…  in main()
777     PetscCall(PetscViewerCreate(comm, &vtk_viewer_soln));  in main()