#include "private.h"
#include "colls/colls.h"
+#include "simgrid/sg_config.h"
s_mpi_coll_description_t mpi_coll_allgather_description[] = {
{"default",
{NULL, NULL, NULL} /* this array must be NULL terminated */
};
+s_mpi_coll_description_t mpi_coll_allgatherv_description[] = {
+ {"default",
+ "allgatherv default collective",
+ smpi_mpi_allgatherv},
+COLL_ALLGATHERVS(COLL_DESCRIPTION, COLL_COMMA),
+ {NULL, NULL, NULL} /* this array must be NULL terminated */
+};
+
s_mpi_coll_description_t mpi_coll_allreduce_description[] = {
{"default",
"allreduce default collective",
};
s_mpi_coll_description_t mpi_coll_alltoall_description[] = {
- {"ompi",
+ {"default",
"Ompi alltoall default collective",
- smpi_coll_tuned_alltoall_ompi},
+ smpi_coll_tuned_alltoall_ompi2},
COLL_ALLTOALLS(COLL_DESCRIPTION, COLL_COMMA),
{"bruck",
"Alltoall Bruck (SG) collective",
{"basic_linear",
"Alltoall basic linear (SG) collective",
smpi_coll_tuned_alltoall_basic_linear},
- {"pairwise",
- "Alltoall pairwise (SG) collective",
- smpi_coll_tuned_alltoall_pairwise},
+ {NULL, NULL, NULL} /* this array must be NULL terminated */
+};
+
+s_mpi_coll_description_t mpi_coll_alltoallv_description[] = {
+ {"default",
+ "Ompi alltoallv default collective",
+ smpi_coll_basic_alltoallv},
+COLL_ALLTOALLVS(COLL_DESCRIPTION, COLL_COMMA),
{NULL, NULL, NULL} /* this array must be NULL terminated */
};
}
int find_coll_description(s_mpi_coll_description_t * table,
- const char *name)
+ char *name)
{
int i;
char *name_list = NULL;
-
+ int selector_on=0;
+ if(name==NULL){//no argument provided, use active selector's algorithm
+ name=(char*)sg_cfg_get_string("smpi/coll_selector");
+ selector_on=1;
+ }
for (i = 0; table[i].name; i++)
if (!strcmp(name, table[i].name)) {
return i;
}
+
+ if(selector_on){
+ // collective seems not handled by the active selector, try with default one
+ name=(char*)"default";
+ for (i = 0; table[i].name; i++)
+ if (!strcmp(name, table[i].name)) {
+ return i;
+ }
+ }
name_list = strdup(table[0].name);
for (i = 1; table[i].name; i++) {
name_list =
return -1;
}
-
-
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_coll, smpi,
"Logging specific to SMPI (coll)");
int (*mpi_coll_allgather_fun)(void *, int, MPI_Datatype, void*, int, MPI_Datatype, MPI_Comm);
+int (*mpi_coll_allgatherv_fun)(void *, int, MPI_Datatype, void*, int*, int*, MPI_Datatype, MPI_Comm);
int (*mpi_coll_allreduce_fun)(void *sbuf, void *rbuf, int rcount, MPI_Datatype dtype, MPI_Op op, MPI_Comm comm);
int (*mpi_coll_alltoall_fun)(void *, int, MPI_Datatype, void*, int, MPI_Datatype, MPI_Comm);
+int (*mpi_coll_alltoallv_fun)(void *, int*, int*, MPI_Datatype, void*, int*, int*, MPI_Datatype, MPI_Comm);
int (*mpi_coll_bcast_fun)(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm com);
int (*mpi_coll_reduce_fun)(void *buf, void *rbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm);
free_tree(tree);
}
-int smpi_coll_tuned_alltoall_ompi(void *sendbuf, int sendcount,
+int smpi_coll_tuned_alltoall_ompi2(void *sendbuf, int sendcount,
MPI_Datatype sendtype, void *recvbuf,
int recvcount, MPI_Datatype recvtype,
MPI_Comm comm)
recvcount, recvtype, comm);
} else {
return
- smpi_coll_tuned_alltoall_pairwise(sendbuf, sendcount, sendtype,
- recvbuf, recvcount, recvtype,
- comm);
+ smpi_coll_tuned_alltoall_ring(sendbuf, sendcount, sendtype,
+ recvbuf, recvcount, recvtype,
+ comm);
}
}
return err;
}
-/**
- * Alltoall pairwise
- *
- * this algorithm performs size steps (1<=s<=size) and
- * at each step s, a process p sends iand receive to.from a unique distinct remote process
- * size=5 : s=1: 4->0->1, 0->1->2, 1->2->3, ...
- * s=2: 3->0->2, 4->1->3, 0->2->4, 1->3->0 , 2->4->1
- * ....
- * Openmpi calls this routine when the message size sent to each rank is greater than 3000 bytes
- **/
-int smpi_coll_tuned_alltoall_pairwise(void *sendbuf, int sendcount,
- MPI_Datatype sendtype, void *recvbuf,
- int recvcount, MPI_Datatype recvtype,
- MPI_Comm comm)
-{
- int system_tag = 999;
- int rank, size, step, sendto, recvfrom, sendsize, recvsize;
-
- rank = smpi_comm_rank(comm);
- size = smpi_comm_size(comm);
- XBT_DEBUG("<%d> algorithm alltoall_pairwise() called.", rank);
- sendsize = smpi_datatype_size(sendtype);
- recvsize = smpi_datatype_size(recvtype);
- /* Perform pairwise exchange - starting from 1 so the local copy is last */
- for (step = 1; step < size + 1; step++) {
- /* who do we talk to in this step? */
- sendto = (rank + step) % size;
- recvfrom = (rank + size - step) % size;
- /* send and receive */
- smpi_mpi_sendrecv(&((char *) sendbuf)[sendto * sendsize * sendcount],
- sendcount, sendtype, sendto, system_tag,
- &((char *) recvbuf)[recvfrom * recvsize * recvcount],
- recvcount, recvtype, recvfrom, system_tag, comm,
- MPI_STATUS_IGNORE);
- }
- return MPI_SUCCESS;
-}
-
int smpi_coll_basic_alltoallv(void *sendbuf, int *sendcounts,
int *senddisps, MPI_Datatype sendtype,
void *recvbuf, int *recvcounts,
