162 …PetscMPIInt     proc_end = 0, size, rank, tag1, tag2, *len_s, nrqr, nrqs, *id_r1, *len_r1, flag, *…  in MatIncreaseOverlap_MPISBAIJ_Once()  local
216   PetscCall(PetscMalloc4(size, &len_s, size, &btable, size, &iwork, size + 1, &Bowners));  in MatIncreaseOverlap_MPISBAIJ_Once()
249   for (i = 0; i < size; i++) len_s[i] = 0;  in MatIncreaseOverlap_MPISBAIJ_Once()
278         len_s[proc_id]++;  in MatIncreaseOverlap_MPISBAIJ_Once()
284       *(data1 + proc_id * len + 1 + i) = len_s[proc_id] - iwork[proc_id];  in MatIncreaseOverlap_MPISBAIJ_Once()
285       iwork[proc_id]                   = len_s[proc_id];  in MatIncreaseOverlap_MPISBAIJ_Once()
294     if (len_s[i]) {  in MatIncreaseOverlap_MPISBAIJ_Once()
296       len_s[i] += 1 + is_max; /* add no. of header msg */  in MatIncreaseOverlap_MPISBAIJ_Once()
305   PetscCall(PetscGatherNumberOfMessages(comm, NULL, len_s, &nrqr));  in MatIncreaseOverlap_MPISBAIJ_Once()
306   PetscCall(PetscGatherMessageLengths(comm, nrqs, nrqr, len_s, &id_r1, &len_r1));  in MatIncreaseOverlap_MPISBAIJ_Once()
312     if (len_s[proc_id]) {  in MatIncreaseOverlap_MPISBAIJ_Once()
313 …PetscCallMPI(MPIU_Isend(data1_start[proc_id], len_s[proc_id], MPIU_INT, proc_id, tag1, comm, s_wai…  in MatIncreaseOverlap_MPISBAIJ_Once()
326   for (PetscMPIInt proc_id = 0; proc_id < size; proc_id++) len_s[proc_id] = iwork[proc_id] = 0;  in MatIncreaseOverlap_MPISBAIJ_Once()
372 …  PetscCall(PetscMPIIntCast(len, &len_s[proc_id])); /* length of message sending back to proc_id */  in MatIncreaseOverlap_MPISBAIJ_Once()
393   PetscCallMPI(MPIU_Allreduce(len_s, iwork, size, MPI_INT, MPI_MAX, comm));  in MatIncreaseOverlap_MPISBAIJ_Once()
395   PetscCall(PetscFree4(len_s, btable, iwork, Bowners));  in MatIncreaseOverlap_MPISBAIJ_Once()