{
char *scr1buf, *scr2buf, *scr3buf, *xxx, *sendbuf, *recvbuf;
int myrank, size, x_base, x_size, computed, idx;
- int x_start, x_count, r, n, mynewrank, newroot, partner;
+ int x_start, x_count = 0, r, n, mynewrank, newroot, partner;
int start_even[20], start_odd[20], count_even[20], count_odd[20];
MPI_Aint typelng;
MPI_Status status;
size_t scrlng;
int new_prot;
- MPIM_Datatype datatype; MPIM_Op op;
+ MPIM_Datatype datatype = MPIM_INT; MPIM_Op op = MPIM_MAX;
if (mpi_datatype==MPI_SHORT ) datatype=MPIM_SHORT;
else if(mpi_datatype==MPI_INT ) datatype=MPIM_INT;