* Auther: Ahmad Faraj
****************************************************************************/
-int
-smpi_coll_tuned_alltoall_simple(void * send_buff, int send_count,
- MPI_Datatype send_type, void * recv_buff,
- int recv_count, MPI_Datatype recv_type,
- MPI_Comm comm)
+int smpi_coll_tuned_alltoall_simple(void *send_buff, int send_count,
+ MPI_Datatype send_type,
+ void *recv_buff, int recv_count,
+ MPI_Datatype recv_type, MPI_Comm comm)
{
int i, rank, size, nreqs, err, src, dst, tag = 101;
char *psnd;
MPI_Request *req;
MPI_Request *preq;
MPI_Request *qreq;
- MPI_Status s, * statuses;
+ MPI_Status s, *statuses;
MPI_Comm_size(comm, &size);
/* Allocate arrays of requests. */
nreqs = 2 * (size - 1);
- if (nreqs > 0)
- {
- req = (MPI_Request *) malloc(nreqs * sizeof(MPI_Request));
- statuses = (MPI_Status *) malloc(nreqs * sizeof(MPI_Status));
- if (!req || !statuses)
- {
- free(req);
- free(statuses);
- return 0;
- }
+ if (nreqs > 0) {
+ req = (MPI_Request *) malloc(nreqs * sizeof(MPI_Request));
+ statuses = (MPI_Status *) malloc(nreqs * sizeof(MPI_Status));
+ if (!req || !statuses) {
+ free(req);
+ free(statuses);
+ return 0;
}
- else
- req = 0;
+ } else {
+ req = NULL;
+ statuses = NULL;
+ }
/* simple optimization */
psnd = ((char *) send_buff) + (rank * sndinc);
prcv = ((char *) recv_buff) + (rank * rcvinc);
- MPI_Sendrecv (psnd, send_count, send_type, rank, tag,
- prcv, recv_count, recv_type,
- rank, tag, comm, &s);
+ MPI_Sendrecv(psnd, send_count, send_type, rank, tag,
+ prcv, recv_count, recv_type, rank, tag, comm, &s);
/* Initiate all send/recv to/from others. */
preq = req;
qreq = req + size - 1;
- prcv = (char*) recv_buff;
- psnd = (char*) send_buff;
- for (i = 0; i < size; i++)
- {
- src = dst = (rank + i) % size;
- if (src == rank) continue;
- if (dst == rank) continue;
- MPI_Recv_init(prcv + (src * rcvinc), recv_count, recv_type, src,
- tag, comm, preq++);
- MPI_Send_init(psnd + (dst * sndinc), send_count, send_type, dst,
- tag, comm, qreq++);
- }
+ prcv = (char *) recv_buff;
+ psnd = (char *) send_buff;
+ for (i = 0; i < size; i++) {
+ src = dst = (rank + i) % size;
+ if (src == rank)
+ continue;
+ if (dst == rank)
+ continue;
+ MPI_Recv_init(prcv + (src * rcvinc), recv_count, recv_type, src,
+ tag, comm, preq++);
+ MPI_Send_init(psnd + (dst * sndinc), send_count, send_type, dst,
+ tag, comm, qreq++);
+ }
/* Start all the requests. */
err = MPI_Request_free(preq);
if (err != MPI_SUCCESS) {
if (req)
- free((char *) req);
+ free((char *) req);
if (statuses)
- free(statuses);
+ free(statuses);
return err;
}
}
free(statuses);
return (1);
}
-
-