* Alltoall Bruck
*
* Openmpi calls this routine when the message size sent to each rank < 2000 bytes and size < 12
+ * FIXME: uh, check smpi_pmpi again, but this routine is called for > 12, not
+ * less...
**/
int smpi_coll_tuned_alltoall_bruck(void *sendbuf, int sendcount,
MPI_Datatype sendtype, void *recvbuf,
int system_tag = 777;
int i, rank, size, err, count;
MPI_Aint lb;
- MPI_Aint sendextent = 0;
- MPI_Aint recvextent = 0;
+ MPI_Aint sendext = 0;
+ MPI_Aint recvext = 0;
MPI_Request *requests;
// FIXME: check implementation
rank = smpi_comm_rank(comm);
size = smpi_comm_size(comm);
XBT_DEBUG("<%d> algorithm alltoall_bruck() called.", rank);
- err = smpi_datatype_extent(sendtype, &lb, &sendextent);
- err = smpi_datatype_extent(recvtype, &lb, &recvextent);
+ err = smpi_datatype_extent(sendtype, &lb, &sendext);
+ err = smpi_datatype_extent(recvtype, &lb, &recvext);
/* Local copy from self */
err =
- smpi_datatype_copy(&((char *) sendbuf)[rank * sendextent], sendcount,
- sendtype, &((char *) recvbuf)[rank * recvextent],
+ smpi_datatype_copy((char *)sendbuf + rank * sendcount * sendext,
+ sendcount, sendtype,
+ (char *)recvbuf + rank * recvcount * recvext,
recvcount, recvtype);
if (err == MPI_SUCCESS && size > 1) {
/* Initiate all send/recv to/from others. */
continue;
}
requests[count] =
- smpi_irecv_init(&((char *) recvbuf)[i * recvextent], recvcount,
+ smpi_irecv_init((char *)recvbuf + i * recvcount * recvext, recvcount,
recvtype, i, system_tag, comm);
count++;
}
continue;
}
requests[count] =
- smpi_isend_init(&((char *) sendbuf)[i * sendextent], sendcount,
+ smpi_isend_init((char *)sendbuf + i * sendcount * sendext, sendcount,
sendtype, i, system_tag, comm);
count++;
}
{
int system_tag = 888;
int i, rank, size, err, count;
- MPI_Aint lb;
- MPI_Aint sendinc = 0;
- MPI_Aint recvinc = 0;
+ MPI_Aint lb = 0, sendext = 0, recvext = 0;
MPI_Request *requests;
/* Initialize. */
rank = smpi_comm_rank(comm);
size = smpi_comm_size(comm);
XBT_DEBUG("<%d> algorithm alltoall_basic_linear() called.", rank);
- err = smpi_datatype_extent(sendtype, &lb, &sendinc);
- err = smpi_datatype_extent(recvtype, &lb, &recvinc);
- sendinc *= sendcount;
- recvinc *= recvcount;
+ err = smpi_datatype_extent(sendtype, &lb, &sendext);
+ err = smpi_datatype_extent(recvtype, &lb, &recvext);
/* simple optimization */
- err =
- smpi_datatype_copy(&((char *) sendbuf)[rank * sendinc], sendcount,
- sendtype, &((char *) recvbuf)[rank * recvinc],
- recvcount, recvtype);
+ err = smpi_datatype_copy((char *)sendbuf + rank * sendcount * sendext,
+ sendcount, sendtype,
+ (char *)recvbuf + rank * recvcount * recvext,
+ recvcount, recvtype);
if (err == MPI_SUCCESS && size > 1) {
/* Initiate all send/recv to/from others. */
requests = xbt_new(MPI_Request, 2 * (size - 1));
count = 0;
for (i = (rank + 1) % size; i != rank; i = (i + 1) % size) {
requests[count] =
- smpi_irecv_init(&((char *) recvbuf)[i * recvinc], recvcount,
+ smpi_irecv_init((char *)recvbuf + i * recvcount * recvext, recvcount,
recvtype, i, system_tag, comm);
count++;
}
* when messages actually arrive in the order in which they were posted.
* TODO: check the previous assertion
*/
- for (i = (rank + size - 1) % size; i != rank;
- i = (i + size - 1) % size) {
+ for (i = (rank + size - 1) % size; i != rank; i = (i + size - 1) % size) {
requests[count] =
- smpi_isend_init(&((char *) sendbuf)[i * sendinc], sendcount,
+ smpi_isend_init((char *)sendbuf + i * sendcount * sendext, sendcount,
sendtype, i, system_tag, comm);
count++;
}
{
int system_tag = 889;
int i, rank, size, err, count;
- MPI_Aint lb;
- MPI_Aint sendextent = 0;
- MPI_Aint recvextent = 0;
+ MPI_Aint lb = 0, sendext = 0, recvext = 0;
MPI_Request *requests;
/* Initialize. */
rank = smpi_comm_rank(comm);
size = smpi_comm_size(comm);
XBT_DEBUG("<%d> algorithm basic_alltoallv() called.", rank);
- err = smpi_datatype_extent(sendtype, &lb, &sendextent);
- err = smpi_datatype_extent(recvtype, &lb, &recvextent);
+ err = smpi_datatype_extent(sendtype, &lb, &sendext);
+ err = smpi_datatype_extent(recvtype, &lb, &recvext);
/* Local copy from self */
err =
- smpi_datatype_copy(&((char *) sendbuf)[senddisps[rank] * sendextent],
+ smpi_datatype_copy((char *)sendbuf + senddisps[rank] * sendext,
sendcounts[rank], sendtype,
- &((char *) recvbuf)[recvdisps[rank] * recvextent],
+ (char *)recvbuf + recvdisps[rank] * recvext,
recvcounts[rank], recvtype);
if (err == MPI_SUCCESS && size > 1) {
/* Initiate all send/recv to/from others. */
continue;
}
requests[count] =
- smpi_irecv_init(&((char *) recvbuf)[recvdisps[i] * recvextent],
+ smpi_irecv_init((char *)recvbuf + recvdisps[i] * recvext,
recvcounts[i], recvtype, i, system_tag, comm);
count++;
}
continue;
}
requests[count] =
- smpi_isend_init(&((char *) sendbuf)[senddisps[i] * sendextent],
+ smpi_isend_init((char *)sendbuf + senddisps[i] * sendext,
sendcounts[i], sendtype, i, system_tag, comm);
count++;
}