/**
* debugging helper function
**/
-void print_buffer_int( void *buf, int len, char *msg, int rank) ;
-void print_buffer_int( void *buf, int len, char *msg, int rank) {
+static void print_buffer_int( void *buf, int len, const char *msg, int rank) {
int tmp, *v;
printf("**[%d] %s: ",rank,msg);
for (tmp=0;tmp<len;tmp++) {
} else {
// i am the ROOT: wait for all buffers by creating one request by sender
+ int src;
tabrequest = xbt_malloc((size-1)*sizeof(smpi_mpi_request_t));
void **tmpbufs = xbt_malloc((size-1)*sizeof(void *));
// i can not use: 'request->forward = size-1;' (which would progagate size-1 receive reqs)
// since we should op values as soon as one receiving request matches.
- for (i=0; i<comm->size-1; i++) {
+ for (i=0; i<size-1; i++) {
// reminder: for smpi_create_request() the src is always the process sending.
- retval = smpi_create_request(tmpbufs[i], count, datatype,
- MPI_ANY_SOURCE, root,
+ src = i < root ? i : i+1;
+ retval = smpi_create_request(tmpbufs[i], count, datatype,
+ src , root,
tag, comm, &(tabrequest[i]));
if (NULL != tabrequest[i] && MPI_SUCCESS == retval) {
if (MPI_SUCCESS == retval) {
}
}
// now, wait for completion of all irecv's.
- for (i=0; i<comm->size-1; i++) {
+ for (i=0; i<size-1; i++) {
int index = MPI_UNDEFINED;
- smpi_mpi_waitany(comm->size-1, tabrequest, &index, MPI_STATUS_IGNORE);
+ smpi_mpi_waitany(size-1, tabrequest, &index, MPI_STATUS_IGNORE);
#ifdef DEBUG_REDUCE
printf("MPI_Waitany() unblocked: root received (completes req[index=%d])\n",index);
- print_buffer_int( tmpbufs[index], count, bprintf("tmpbufs[index=%d]",index),rank);
+ print_buffer_int( tmpbufs[index], count, bprintf("tmpbufs[index=%d] (value received)",index),rank);
#endif
// arg 2 is modified