- // 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 *));
- for (i=0; i<size-1; i++) {
- // we need 1 buffer per request to store intermediate receptions
- tmpbufs[i] = xbt_malloc(count*datatype->size);
- }
- memcpy(recvbuf,sendbuf,count*datatype->size*sizeof(char)); // initiliaze recv buf with my own snd buf
-
- // 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<size-1; i++) {
- // reminder: for smpi_create_request() the src is always the process sending.
- 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) {
- smpi_mpi_irecv(tabrequest[i]);
- }
- }
- }
- // now, wait for completion of all irecv's.
- for (i=0; i<size-1; i++) {
- int index = MPI_UNDEFINED;
- smpi_mpi_waitany(size-1, tabrequest, &index, MPI_STATUS_IGNORE);
+ // 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 *));
+ for (i = 0; i < size - 1; i++) {
+ // we need 1 buffer per request to store intermediate receptions
+ tmpbufs[i] = xbt_malloc(count * datatype->size);
+ }
+ memcpy(recvbuf, sendbuf, count * datatype->size * sizeof(char)); // initiliaze recv buf with my own snd buf
+
+ // 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 < size - 1; i++) {
+ // reminder: for smpi_create_request() the src is always the process sending.
+ 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) {
+ smpi_mpi_irecv(tabrequest[i]);
+ }
+ }
+ }
+ // now, wait for completion of all irecv's.
+ for (i = 0; i < size - 1; i++) {
+ int index = MPI_UNDEFINED;
+ smpi_mpi_waitany(size - 1, tabrequest, &index, MPI_STATUS_IGNORE);