namespace simgrid{
namespace smpi{
-
-int
-Coll_scatter_ompi_binomial::scatter(void *sbuf, int scount,
- MPI_Datatype sdtype,
- void *rbuf, int rcount,
- MPI_Datatype rdtype,
- int root,
- MPI_Comm comm
- )
+int Coll_scatter_ompi_binomial::scatter(void* sbuf, int scount, MPI_Datatype sdtype, void* rbuf, int rcount,
+ MPI_Datatype rdtype, int root, MPI_Comm comm)
{
int line = -1;
int i;
vrank = (rank - root + size) % size;
if (rank == root) {
- if (0 == root) {
- /* root on 0, just use the send buffer */
- ptmp = (char *) sbuf;
- if (rbuf != MPI_IN_PLACE) {
- /* local copy to rbuf */
- err = Datatype::copy(sbuf, scount, sdtype,
- rbuf, rcount, rdtype);
- if (MPI_SUCCESS != err) { line = __LINE__; goto err_hndl; }
- }
- } else {
- /* root is not on 0, allocate temp buffer for send */
- tempbuf = (char *) smpi_get_tmp_sendbuffer(strue_extent + (scount*size - 1) * sextent);
- if (NULL == tempbuf) {
- err = MPI_ERR_OTHER; line = __LINE__; goto err_hndl;
- }
-
- ptmp = tempbuf - slb;
-
- /* and rotate data so they will eventually in the right place */
- err = Datatype::copy((char *) sbuf + sextent*root*scount, scount*(size-root), sdtype,
- ptmp, scount*(size-root), sdtype);
- if (MPI_SUCCESS != err) { line = __LINE__; goto err_hndl; }
-
-
- err = Datatype::copy((char*)sbuf, scount*root, sdtype,
- ptmp + sextent*scount*(size - root), scount*root, sdtype);
- if (MPI_SUCCESS != err) { line = __LINE__; goto err_hndl; }
-
- if (rbuf != MPI_IN_PLACE) {
- /* local copy to rbuf */
- err = Datatype::copy(ptmp, scount, sdtype,
- rbuf, rcount, rdtype);
- if (MPI_SUCCESS != err) { line = __LINE__; goto err_hndl; }
- }
- }
- total_send = scount;
+ if (0 == root) {
+ /* root on 0, just use the send buffer */
+ ptmp = (char*)sbuf;
+ if (rbuf != MPI_IN_PLACE) {
+ /* local copy to rbuf */
+ err = Datatype::copy(sbuf, scount, sdtype, rbuf, rcount, rdtype);
+ if (MPI_SUCCESS != err) {
+ line = __LINE__;
+ goto err_hndl;
+ }
+ }
+ } else {
+ /* root is not on 0, allocate temp buffer for send */
+ tempbuf = (char*)smpi_get_tmp_sendbuffer(strue_extent + (scount * size - 1) * sextent);
+ if (NULL == tempbuf) {
+ err = MPI_ERR_OTHER;
+ line = __LINE__;
+ goto err_hndl;
+ }
+
+ ptmp = tempbuf - slb;
+
+ /* and rotate data so they will eventually in the right place */
+ err = Datatype::copy((char*)sbuf + sextent * root * scount, scount * (size - root), sdtype, ptmp,
+ scount * (size - root), sdtype);
+ if (MPI_SUCCESS != err) {
+ line = __LINE__;
+ goto err_hndl;
+ }
+
+ err = Datatype::copy((char*)sbuf, scount * root, sdtype, ptmp + sextent * scount * (size - root), scount * root,
+ sdtype);
+ if (MPI_SUCCESS != err) {
+ line = __LINE__;
+ goto err_hndl;
+ }
+
+ if (rbuf != MPI_IN_PLACE) {
+ /* local copy to rbuf */
+ err = Datatype::copy(ptmp, scount, sdtype, rbuf, rcount, rdtype);
+ if (MPI_SUCCESS != err) {
+ line = __LINE__;
+ goto err_hndl;
+ }
+ }
+ }
+ total_send = scount;
} else if (!(vrank % 2)) {
- /* non-root, non-leaf nodes, allocate temp buffer for recv
- * the most we need is rcount*size/2 */
- tempbuf = (char *) smpi_get_tmp_recvbuffer(rtrue_extent + (rcount*size - 1) * rextent);
- if (NULL == tempbuf) {
- err= MPI_ERR_OTHER; line = __LINE__; goto err_hndl;
- }
-
- ptmp = tempbuf - rlb;
-
- sdtype = rdtype;
- scount = rcount;
- sextent = rextent;
- total_send = scount;
+ /* non-root, non-leaf nodes, allocate temp buffer for recv
+ * the most we need is rcount*size/2 */
+ tempbuf = (char*)smpi_get_tmp_recvbuffer(rtrue_extent + (rcount * size - 1) * rextent);
+ if (NULL == tempbuf) {
+ err = MPI_ERR_OTHER;
+ line = __LINE__;
+ goto err_hndl;
+ }
+
+ ptmp = tempbuf - rlb;
+
+ sdtype = rdtype;
+ scount = rcount;
+ sextent = rextent;
+ total_send = scount;
} else {
- /* leaf nodes, just use rbuf */
- ptmp = (char *) rbuf;
+ /* leaf nodes, just use rbuf */
+ ptmp = (char*)rbuf;
}
if (!(vrank % 2)) {
- if (rank != root) {
- /* recv from parent on non-root */
- Request::recv(ptmp, rcount*size, rdtype, bmtree->tree_prev,
- COLL_TAG_SCATTER, comm, &status);
- /* local copy to rbuf */
- Datatype::copy(ptmp, scount, sdtype, rbuf, rcount, rdtype);
- }
- /* send to children on all non-leaf */
- for (i = 0; i < bmtree->tree_nextsize; i++) {
- int mycount = 0, vkid;
- /* figure out how much data I have to send to this child */
- vkid = (bmtree->tree_next[i] - root + size) % size;
- mycount = vkid - vrank;
- if (mycount > (size - vkid))
- mycount = size - vkid;
- mycount *= scount;
-
- Request::send(ptmp + total_send*sextent, mycount, sdtype,
- bmtree->tree_next[i],
- COLL_TAG_SCATTER,
- comm);
-
- total_send += mycount;
- }
-
+ if (rank != root) {
+ /* recv from parent on non-root */
+ Request::recv(ptmp, rcount * size, rdtype, bmtree->tree_prev, COLL_TAG_SCATTER, comm, &status);
+ /* local copy to rbuf */
+ Datatype::copy(ptmp, scount, sdtype, rbuf, rcount, rdtype);
+ }
+ /* send to children on all non-leaf */
+ for (i = 0; i < bmtree->tree_nextsize; i++) {
+ int mycount = 0, vkid;
+ /* figure out how much data I have to send to this child */
+ vkid = (bmtree->tree_next[i] - root + size) % size;
+ mycount = vkid - vrank;
+ if (mycount > (size - vkid))
+ mycount = size - vkid;
+ mycount *= scount;
+
+ Request::send(ptmp + total_send * sextent, mycount, sdtype, bmtree->tree_next[i], COLL_TAG_SCATTER, comm);
+
+ total_send += mycount;
+ }
} else {
- /* recv from parent on leaf nodes */
- Request::recv(ptmp, rcount, rdtype, bmtree->tree_prev,
- COLL_TAG_SCATTER, comm, &status);
+ /* recv from parent on leaf nodes */
+ Request::recv(ptmp, rcount, rdtype, bmtree->tree_prev, COLL_TAG_SCATTER, comm, &status);
}
if (NULL != tempbuf)
err_hndl:
if (NULL != tempbuf)
- free(tempbuf);
+ free(tempbuf);
- XBT_DEBUG( "%s:%4d\tError occurred %d, rank %2d",
- __FILE__, line, err, rank);
+ XBT_DEBUG("%s:%4d\tError occurred %d, rank %2d", __FILE__, line, err, rank);
return err;
}
/* copied function (with appropriate renaming) starts here */
/*
- * scatter_intra
+ * scatter_intra
*
- * Function: - basic scatter operation
- * Accepts: - same arguments as MPI_Scatter()
- * Returns: - MPI_SUCCESS or error code
+ * Function: - basic scatter operation
+ * Accepts: - same arguments as MPI_Scatter()
+ * Returns: - MPI_SUCCESS or error code
*/
-int
-Coll_scatter_ompi_basic_linear::scatter(void *sbuf, int scount,
- MPI_Datatype sdtype,
- void *rbuf, int rcount,
- MPI_Datatype rdtype,
- int root,
- MPI_Comm comm
- )
+int Coll_scatter_ompi_basic_linear::scatter(void* sbuf, int scount, MPI_Datatype sdtype, void* rbuf, int rcount,
+ MPI_Datatype rdtype, int root, MPI_Comm comm)
{
int i, rank, size, err;
char *ptmp;
