26 PetscErrorCode PetscSplitOwnershipBlock(MPI_Comm comm, PetscInt bs, PetscInt *n, PetscInt *N)  in PetscSplitOwnershipBlock()  argument
31 …PetscCheck(*N != PETSC_DECIDE || *n != PETSC_DECIDE, PETSC_COMM_SELF, PETSC_ERR_ARG_INCOMP, "Both …  in PetscSplitOwnershipBlock()
33   if (*N == PETSC_DECIDE) {  in PetscSplitOwnershipBlock()
35     PetscCallMPI(MPIU_Allreduce(n, N, 1, MPIU_INT, MPI_SUM, comm));  in PetscSplitOwnershipBlock()
37     PetscInt Nbs = *N / bs;  in PetscSplitOwnershipBlock()
67 PetscErrorCode PetscSplitOwnership(MPI_Comm comm, PetscInt *n, PetscInt *N)  in PetscSplitOwnership()  argument
72 …PetscCheck(*N != PETSC_DECIDE || *n != PETSC_DECIDE, PETSC_COMM_SELF, PETSC_ERR_ARG_INCOMP, "Both …  in PetscSplitOwnership()
76     l[1] = (*N == PETSC_DECIDE) ? 1 : 0;  in PetscSplitOwnership()
83   if (*N == PETSC_DECIDE) {  in PetscSplitOwnership()
84     PetscCallMPI(MPIU_Allreduce(n, N, 1, MPIU_INT, MPI_SUM, comm));  in PetscSplitOwnership()
88     *n = *N / size + ((*N % size) > rank);  in PetscSplitOwnership()
92 …N, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Sum of local lengths %" PetscInt_FMT " does not equal glob…  in PetscSplitOwnership()
123 PetscErrorCode PetscSplitOwnershipEqual(MPI_Comm comm, PetscInt *n, PetscInt *N)  in PetscSplitOwnershipEqual()  argument
128 …PetscCheck(*N != PETSC_DECIDE || *n != PETSC_DECIDE, PETSC_COMM_SELF, PETSC_ERR_ARG_INCOMP, "Both …  in PetscSplitOwnershipEqual()
132     l[1] = (*N == PETSC_DECIDE) ? 1 : 0;  in PetscSplitOwnershipEqual()
139   if (*N == PETSC_DECIDE) {  in PetscSplitOwnershipEqual()
140     PetscCallMPI(MPIU_Allreduce(n, N, 1, MPIU_INT, MPI_SUM, comm));  in PetscSplitOwnershipEqual()
144     *n = *N / size;  in PetscSplitOwnershipEqual()
145     if (*N % size) {  in PetscSplitOwnershipEqual()
146       if ((rank + 1) * (*n + 1) <= *N) *n = *n + 1;  in PetscSplitOwnershipEqual()
147       else if (rank * (*n + 1) <= *N) *n = *N - rank * (*n + 1);  in PetscSplitOwnershipEqual()
153 …N, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Sum of local lengths %" PetscInt_FMT " does not equal glob…  in PetscSplitOwnershipEqual()