1 /* selector for collective algorithms based on mvapich decision logic */
3 /* Copyright (c) 2009-2010, 2013-2014. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is xbt_free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #include "colls_private.h"
11 #include "smpi_mvapich2_selector_stampede.h"
15 int smpi_coll_tuned_alltoall_mvapich2( void *sendbuf, int sendcount,
16 MPI_Datatype sendtype,
17 void* recvbuf, int recvcount,
18 MPI_Datatype recvtype,
22 if(mv2_alltoall_table_ppn_conf==NULL)
23 init_mv2_alltoall_tables_stampede();
25 int sendtype_size, recvtype_size, nbytes, comm_size;
26 char * tmp_buf = NULL;
27 int mpi_errno=MPI_SUCCESS;
29 int range_threshold = 0;
31 comm_size = smpi_comm_size(comm);
33 sendtype_size=smpi_datatype_size(sendtype);
34 recvtype_size=smpi_datatype_size(recvtype);
35 nbytes = sendtype_size * sendcount;
37 /* check if safe to use partial subscription mode */
39 /* Search for the corresponding system size inside the tuning table */
40 while ((range < (mv2_size_alltoall_tuning_table[conf_index] - 1)) &&
41 (comm_size > mv2_alltoall_thresholds_table[conf_index][range].numproc)) {
44 /* Search for corresponding inter-leader function */
45 while ((range_threshold < (mv2_alltoall_thresholds_table[conf_index][range].size_table - 1))
47 mv2_alltoall_thresholds_table[conf_index][range].algo_table[range_threshold].max)
48 && (mv2_alltoall_thresholds_table[conf_index][range].algo_table[range_threshold].max != -1)) {
51 MV2_Alltoall_function = mv2_alltoall_thresholds_table[conf_index][range].algo_table[range_threshold]
52 .MV2_pt_Alltoall_function;
54 if(sendbuf != MPI_IN_PLACE) {
55 mpi_errno = MV2_Alltoall_function(sendbuf, sendcount, sendtype,
56 recvbuf, recvcount, recvtype,
61 mv2_alltoall_thresholds_table[conf_index][range].in_place_algo_table[range_threshold].min
62 ||nbytes > mv2_alltoall_thresholds_table[conf_index][range].in_place_algo_table[range_threshold].max
64 tmp_buf = (char *)xbt_malloc( comm_size * recvcount * recvtype_size );
65 mpi_errno = smpi_datatype_copy((char *)recvbuf,
66 comm_size*recvcount, recvtype,
68 comm_size*recvcount, recvtype);
70 mpi_errno = MV2_Alltoall_function(tmp_buf, recvcount, recvtype,
71 recvbuf, recvcount, recvtype,
75 mpi_errno = MPIR_Alltoall_inplace_MV2(sendbuf, sendcount, sendtype,
76 recvbuf, recvcount, recvtype,
87 int smpi_coll_tuned_allgather_mvapich2(void *sendbuf, int sendcount, MPI_Datatype sendtype,
88 void *recvbuf, int recvcount, MPI_Datatype recvtype,
92 int mpi_errno = MPI_SUCCESS;
93 int nbytes = 0, comm_size, recvtype_size;
95 //int partial_sub_ok = 0;
97 int range_threshold = 0;
99 //int local_size = -1;
100 //MPI_Comm shmem_comm;
101 //MPI_Comm *shmem_commptr=NULL;
102 /* Get the size of the communicator */
103 comm_size = smpi_comm_size(comm);
104 recvtype_size=smpi_datatype_size(recvtype);
105 nbytes = recvtype_size * recvcount;
107 if(mv2_allgather_table_ppn_conf==NULL)
108 init_mv2_allgather_tables_stampede();
111 /* check if safe to use partial subscription mode */
112 /* if (comm->ch.shmem_coll_ok == 1 && comm->ch.is_uniform) {
114 shmem_comm = comm->ch.shmem_comm;
115 MPID_Comm_get_ptr(shmem_comm, shmem_commptr);
116 local_size = shmem_commptr->local_size;
118 if (mv2_allgather_table_ppn_conf[0] == -1) {
119 // Indicating user defined tuning
124 if (local_size == mv2_allgather_table_ppn_conf[i]) {
130 } while(i < mv2_allgather_num_ppn_conf);
134 if (partial_sub_ok != 1) {
137 /* Search for the corresponding system size inside the tuning table */
138 while ((range < (mv2_size_allgather_tuning_table[conf_index] - 1)) &&
140 mv2_allgather_thresholds_table[conf_index][range].numproc)) {
143 /* Search for corresponding inter-leader function */
144 while ((range_threshold <
145 (mv2_allgather_thresholds_table[conf_index][range].size_inter_table - 1))
146 && (nbytes > mv2_allgather_thresholds_table[conf_index][range].inter_leader[range_threshold].max)
147 && (mv2_allgather_thresholds_table[conf_index][range].inter_leader[range_threshold].max !=
152 /* Set inter-leader pt */
153 MV2_Allgather_function =
154 mv2_allgather_thresholds_table[conf_index][range].inter_leader[range_threshold].
155 MV2_pt_Allgather_function;
157 is_two_level = mv2_allgather_thresholds_table[conf_index][range].two_level[range_threshold];
159 /* intracommunicator */
160 if(is_two_level ==1){
162 /* if(comm->ch.shmem_coll_ok == 1){
163 MPIR_T_PVAR_COUNTER_INC(MV2, mv2_num_shmem_coll_calls, 1);
164 if (1 == comm->ch.is_blocked) {
165 mpi_errno = MPIR_2lvl_Allgather_MV2(sendbuf, sendcount, sendtype,
166 recvbuf, recvcount, recvtype,
170 mpi_errno = MPIR_Allgather_intra(sendbuf, sendcount, sendtype,
171 recvbuf, recvcount, recvtype,
175 mpi_errno = MPIR_Allgather_RD_MV2(sendbuf, sendcount, sendtype,
176 recvbuf, recvcount, recvtype,
179 } else if(MV2_Allgather_function == &MPIR_Allgather_Bruck_MV2
180 || MV2_Allgather_function == &MPIR_Allgather_RD_MV2
181 || MV2_Allgather_function == &MPIR_Allgather_Ring_MV2) {
182 mpi_errno = MV2_Allgather_function(sendbuf, sendcount, sendtype,
183 recvbuf, recvcount, recvtype,
186 return MPI_ERR_OTHER;
193 int smpi_coll_tuned_gather_mvapich2(void *sendbuf,
195 MPI_Datatype sendtype,
198 MPI_Datatype recvtype,
199 int root, MPI_Comm comm)
201 if(mv2_gather_thresholds_table==NULL)
202 init_mv2_gather_tables_stampede();
204 int mpi_errno = MPI_SUCCESS;
206 int range_threshold = 0;
207 int range_intra_threshold = 0;
210 int recvtype_size, sendtype_size;
212 comm_size = smpi_comm_size(comm);
213 rank = smpi_comm_rank(comm);
216 recvtype_size=smpi_datatype_size(recvtype);
217 nbytes = recvcnt * recvtype_size;
219 sendtype_size=smpi_datatype_size(sendtype);
220 nbytes = sendcnt * sendtype_size;
223 /* Search for the corresponding system size inside the tuning table */
224 while ((range < (mv2_size_gather_tuning_table - 1)) &&
225 (comm_size > mv2_gather_thresholds_table[range].numproc)) {
228 /* Search for corresponding inter-leader function */
229 while ((range_threshold < (mv2_gather_thresholds_table[range].size_inter_table - 1))
231 mv2_gather_thresholds_table[range].inter_leader[range_threshold].max)
232 && (mv2_gather_thresholds_table[range].inter_leader[range_threshold].max !=
237 /* Search for corresponding intra node function */
238 while ((range_intra_threshold < (mv2_gather_thresholds_table[range].size_intra_table - 1))
240 mv2_gather_thresholds_table[range].intra_node[range_intra_threshold].max)
241 && (mv2_gather_thresholds_table[range].intra_node[range_intra_threshold].max !=
243 range_intra_threshold++;
246 if (smpi_comm_is_blocked(comm) ) {
247 // Set intra-node function pt for gather_two_level
248 MV2_Gather_intra_node_function =
249 mv2_gather_thresholds_table[range].intra_node[range_intra_threshold].
250 MV2_pt_Gather_function;
251 //Set inter-leader pt
252 MV2_Gather_inter_leader_function =
253 mv2_gather_thresholds_table[range].inter_leader[range_threshold].
254 MV2_pt_Gather_function;
255 // We call Gather function
257 MV2_Gather_inter_leader_function(sendbuf, sendcnt, sendtype, recvbuf, recvcnt,
258 recvtype, root, comm);
261 // Indeed, direct (non SMP-aware)gather is MPICH one
262 mpi_errno = smpi_coll_tuned_gather_mpich(sendbuf, sendcnt, sendtype,
263 recvbuf, recvcnt, recvtype,
271 int smpi_coll_tuned_allgatherv_mvapich2(void *sendbuf, int sendcount, MPI_Datatype sendtype,
272 void *recvbuf, int *recvcounts, int *displs,
273 MPI_Datatype recvtype, MPI_Comm comm )
275 int mpi_errno = MPI_SUCCESS;
276 int range = 0, comm_size, total_count, recvtype_size, i;
277 int range_threshold = 0;
280 if(mv2_allgatherv_thresholds_table==NULL)
281 init_mv2_allgatherv_tables_stampede();
283 comm_size = smpi_comm_size(comm);
285 for (i = 0; i < comm_size; i++)
286 total_count += recvcounts[i];
288 recvtype_size=smpi_datatype_size(recvtype);
289 nbytes = total_count * recvtype_size;
291 /* Search for the corresponding system size inside the tuning table */
292 while ((range < (mv2_size_allgatherv_tuning_table - 1)) &&
293 (comm_size > mv2_allgatherv_thresholds_table[range].numproc)) {
296 /* Search for corresponding inter-leader function */
297 while ((range_threshold < (mv2_allgatherv_thresholds_table[range].size_inter_table - 1))
299 comm_size * mv2_allgatherv_thresholds_table[range].inter_leader[range_threshold].max)
300 && (mv2_allgatherv_thresholds_table[range].inter_leader[range_threshold].max !=
304 /* Set inter-leader pt */
305 MV2_Allgatherv_function =
306 mv2_allgatherv_thresholds_table[range].inter_leader[range_threshold].
307 MV2_pt_Allgatherv_function;
309 if (MV2_Allgatherv_function == &MPIR_Allgatherv_Rec_Doubling_MV2)
311 if(!(comm_size & (comm_size - 1)))
314 MPIR_Allgatherv_Rec_Doubling_MV2(sendbuf, sendcount,
320 MPIR_Allgatherv_Bruck_MV2(sendbuf, sendcount,
327 MV2_Allgatherv_function(sendbuf, sendcount, sendtype,
328 recvbuf, recvcounts, displs,
337 int smpi_coll_tuned_allreduce_mvapich2(void *sendbuf,
340 MPI_Datatype datatype,
341 MPI_Op op, MPI_Comm comm)
344 int mpi_errno = MPI_SUCCESS;
348 comm_size = smpi_comm_size(comm);
349 //rank = smpi_comm_rank(comm);
355 if (mv2_allreduce_thresholds_table == NULL)
356 init_mv2_allreduce_tables_stampede();
358 /* check if multiple threads are calling this collective function */
360 MPI_Aint sendtype_size = 0;
362 int range = 0, range_threshold = 0, range_threshold_intra = 0;
363 int is_two_level = 0;
364 //int is_commutative = 0;
365 MPI_Aint true_lb, true_extent;
367 sendtype_size=smpi_datatype_size(datatype);
368 nbytes = count * sendtype_size;
370 smpi_datatype_extent(datatype, &true_lb, &true_extent);
372 //is_commutative = smpi_op_is_commute(op);
375 /* Search for the corresponding system size inside the tuning table */
376 while ((range < (mv2_size_allreduce_tuning_table - 1)) &&
377 (comm_size > mv2_allreduce_thresholds_table[range].numproc)) {
380 /* Search for corresponding inter-leader function */
381 /* skip mcast poiters if mcast is not available */
382 if(mv2_allreduce_thresholds_table[range].mcast_enabled != 1){
383 while ((range_threshold < (mv2_allreduce_thresholds_table[range].size_inter_table - 1))
384 && ((mv2_allreduce_thresholds_table[range].
385 inter_leader[range_threshold].MV2_pt_Allreduce_function
386 == &MPIR_Allreduce_mcst_reduce_redscat_gather_MV2) ||
387 (mv2_allreduce_thresholds_table[range].
388 inter_leader[range_threshold].MV2_pt_Allreduce_function
389 == &MPIR_Allreduce_mcst_reduce_two_level_helper_MV2)
394 while ((range_threshold < (mv2_allreduce_thresholds_table[range].size_inter_table - 1))
396 mv2_allreduce_thresholds_table[range].inter_leader[range_threshold].max)
397 && (mv2_allreduce_thresholds_table[range].inter_leader[range_threshold].max != -1)) {
400 if(mv2_allreduce_thresholds_table[range].is_two_level_allreduce[range_threshold] == 1){
403 /* Search for corresponding intra-node function */
404 while ((range_threshold_intra <
405 (mv2_allreduce_thresholds_table[range].size_intra_table - 1))
407 mv2_allreduce_thresholds_table[range].intra_node[range_threshold_intra].max)
408 && (mv2_allreduce_thresholds_table[range].intra_node[range_threshold_intra].max !=
410 range_threshold_intra++;
413 MV2_Allreduce_function = mv2_allreduce_thresholds_table[range].inter_leader[range_threshold]
414 .MV2_pt_Allreduce_function;
416 MV2_Allreduce_intra_function = mv2_allreduce_thresholds_table[range].intra_node[range_threshold_intra]
417 .MV2_pt_Allreduce_function;
419 /* check if mcast is ready, otherwise replace mcast with other algorithm */
420 if((MV2_Allreduce_function == &MPIR_Allreduce_mcst_reduce_redscat_gather_MV2)||
421 (MV2_Allreduce_function == &MPIR_Allreduce_mcst_reduce_two_level_helper_MV2)){
423 MV2_Allreduce_function = &MPIR_Allreduce_pt2pt_rd_MV2;
425 if(is_two_level != 1) {
426 MV2_Allreduce_function = &MPIR_Allreduce_pt2pt_rd_MV2;
430 if(is_two_level == 1){
431 // check if shm is ready, if not use other algorithm first
432 /*if ((comm->ch.shmem_coll_ok == 1)
433 && (mv2_enable_shmem_allreduce)
435 && (mv2_enable_shmem_collectives)) {
436 mpi_errno = MPIR_Allreduce_two_level_MV2(sendbuf, recvbuf, count,
439 mpi_errno = MPIR_Allreduce_pt2pt_rd_MV2(sendbuf, recvbuf, count,
443 mpi_errno = MV2_Allreduce_function(sendbuf, recvbuf, count,
448 //comm->ch.intra_node_done=0;
456 int smpi_coll_tuned_alltoallv_mvapich2(void *sbuf, int *scounts, int *sdisps,
458 void *rbuf, int *rcounts, int *rdisps,
464 if (sbuf == MPI_IN_PLACE) {
465 return smpi_coll_tuned_alltoallv_ompi_basic_linear(sbuf, scounts, sdisps, sdtype,
466 rbuf, rcounts, rdisps,rdtype,
468 } else /* For starters, just keep the original algorithm. */
469 return smpi_coll_tuned_alltoallv_ring(sbuf, scounts, sdisps, sdtype,
470 rbuf, rcounts, rdisps,rdtype,
475 int smpi_coll_tuned_barrier_mvapich2(MPI_Comm comm)
477 return smpi_coll_tuned_barrier_mvapich2_pair(comm);
483 int smpi_coll_tuned_bcast_mvapich2(void *buffer,
485 MPI_Datatype datatype,
486 int root, MPI_Comm comm)
489 //TODO : Bcast really needs intra/inter phases in mvapich. Default to mpich if not available
490 return smpi_coll_tuned_bcast_mpich(buffer, count, datatype, root, comm);
496 int smpi_coll_tuned_reduce_mvapich2( void *sendbuf,
499 MPI_Datatype datatype,
500 MPI_Op op, int root, MPI_Comm comm)
502 if(mv2_reduce_thresholds_table == NULL)
503 init_mv2_reduce_tables_stampede();
505 int mpi_errno = MPI_SUCCESS;
507 int range_threshold = 0;
508 int range_intra_threshold = 0;
509 int is_commutative, pof2;
513 int is_two_level = 0;
515 comm_size = smpi_comm_size(comm);
516 sendtype_size=smpi_datatype_size(datatype);
517 nbytes = count * sendtype_size;
522 is_commutative = smpi_op_is_commute(op);
524 /* find nearest power-of-two less than or equal to comm_size */
525 for( pof2 = 1; pof2 <= comm_size; pof2 <<= 1 );
529 /* Search for the corresponding system size inside the tuning table */
530 while ((range < (mv2_size_reduce_tuning_table - 1)) &&
531 (comm_size > mv2_reduce_thresholds_table[range].numproc)) {
534 /* Search for corresponding inter-leader function */
535 while ((range_threshold < (mv2_reduce_thresholds_table[range].size_inter_table - 1))
537 mv2_reduce_thresholds_table[range].inter_leader[range_threshold].max)
538 && (mv2_reduce_thresholds_table[range].inter_leader[range_threshold].max !=
543 /* Search for corresponding intra node function */
544 while ((range_intra_threshold < (mv2_reduce_thresholds_table[range].size_intra_table - 1))
546 mv2_reduce_thresholds_table[range].intra_node[range_intra_threshold].max)
547 && (mv2_reduce_thresholds_table[range].intra_node[range_intra_threshold].max !=
549 range_intra_threshold++;
552 /* Set intra-node function pt for reduce_two_level */
553 MV2_Reduce_intra_function =
554 mv2_reduce_thresholds_table[range].intra_node[range_intra_threshold].
555 MV2_pt_Reduce_function;
556 /* Set inter-leader pt */
557 MV2_Reduce_function =
558 mv2_reduce_thresholds_table[range].inter_leader[range_threshold].
559 MV2_pt_Reduce_function;
561 if(mv2_reduce_intra_knomial_factor<0)
563 mv2_reduce_intra_knomial_factor = mv2_reduce_thresholds_table[range].intra_k_degree;
565 if(mv2_reduce_inter_knomial_factor<0)
567 mv2_reduce_inter_knomial_factor = mv2_reduce_thresholds_table[range].inter_k_degree;
569 if(mv2_reduce_thresholds_table[range].is_two_level_reduce[range_threshold] == 1){
572 /* We call Reduce function */
573 if(is_two_level == 1)
575 /* if (comm->ch.shmem_coll_ok == 1
576 && is_commutative == 1) {
577 mpi_errno = MPIR_Reduce_two_level_helper_MV2(sendbuf, recvbuf, count,
578 datatype, op, root, comm, errflag);
580 mpi_errno = MPIR_Reduce_binomial_MV2(sendbuf, recvbuf, count,
581 datatype, op, root, comm);
583 } else if(MV2_Reduce_function == &MPIR_Reduce_inter_knomial_wrapper_MV2 ){
584 if(is_commutative ==1)
586 mpi_errno = MV2_Reduce_function(sendbuf, recvbuf, count,
587 datatype, op, root, comm);
589 mpi_errno = MPIR_Reduce_binomial_MV2(sendbuf, recvbuf, count,
590 datatype, op, root, comm);
592 } else if(MV2_Reduce_function == &MPIR_Reduce_redscat_gather_MV2){
593 if (/*(HANDLE_GET_KIND(op) == HANDLE_KIND_BUILTIN) &&*/ (count >= pof2))
595 mpi_errno = MV2_Reduce_function(sendbuf, recvbuf, count,
596 datatype, op, root, comm);
598 mpi_errno = MPIR_Reduce_binomial_MV2(sendbuf, recvbuf, count,
599 datatype, op, root, comm);
602 mpi_errno = MV2_Reduce_function(sendbuf, recvbuf, count,
603 datatype, op, root, comm);
612 int smpi_coll_tuned_reduce_scatter_mvapich2(void *sendbuf, void *recvbuf, int *recvcnts,
613 MPI_Datatype datatype, MPI_Op op,
616 int mpi_errno = MPI_SUCCESS;
617 int i = 0, comm_size = smpi_comm_size(comm), total_count = 0, type_size =
620 int range_threshold = 0;
621 int is_commutative = 0;
622 int *disps = xbt_malloc(comm_size * sizeof (int));
624 if(mv2_red_scat_thresholds_table==NULL)
625 init_mv2_reduce_scatter_tables_stampede();
627 is_commutative=smpi_op_is_commute(op);
628 for (i = 0; i < comm_size; i++) {
629 disps[i] = total_count;
630 total_count += recvcnts[i];
633 type_size=smpi_datatype_size(datatype);
634 nbytes = total_count * type_size;
636 if (is_commutative) {
638 /* Search for the corresponding system size inside the tuning table */
639 while ((range < (mv2_size_red_scat_tuning_table - 1)) &&
640 (comm_size > mv2_red_scat_thresholds_table[range].numproc)) {
643 /* Search for corresponding inter-leader function */
644 while ((range_threshold < (mv2_red_scat_thresholds_table[range].size_inter_table - 1))
646 mv2_red_scat_thresholds_table[range].inter_leader[range_threshold].max)
647 && (mv2_red_scat_thresholds_table[range].inter_leader[range_threshold].max !=
652 /* Set inter-leader pt */
653 MV2_Red_scat_function =
654 mv2_red_scat_thresholds_table[range].inter_leader[range_threshold].
655 MV2_pt_Red_scat_function;
657 mpi_errno = MV2_Red_scat_function(sendbuf, recvbuf,
661 int is_block_regular = 1;
662 for (i = 0; i < (comm_size - 1); ++i) {
663 if (recvcnts[i] != recvcnts[i+1]) {
664 is_block_regular = 0;
669 while (pof2 < comm_size) pof2 <<= 1;
670 if (pof2 == comm_size && is_block_regular) {
671 /* noncommutative, pof2 size, and block regular */
672 mpi_errno = MPIR_Reduce_scatter_non_comm_MV2(sendbuf, recvbuf,
676 mpi_errno = smpi_coll_tuned_reduce_scatter_mpich_rdb(sendbuf, recvbuf,
687 int smpi_coll_tuned_scatter_mvapich2(void *sendbuf,
689 MPI_Datatype sendtype,
692 MPI_Datatype recvtype,
693 int root, MPI_Comm comm_ptr)
695 int range = 0, range_threshold = 0, range_threshold_intra = 0;
696 int mpi_errno = MPI_SUCCESS;
697 // int mpi_errno_ret = MPI_SUCCESS;
698 int rank, nbytes, comm_size;
699 int recvtype_size, sendtype_size;
700 int partial_sub_ok = 0;
702 // int local_size = -1;
704 // MPI_Comm shmem_comm;
705 // MPID_Comm *shmem_commptr=NULL;
706 if(mv2_scatter_thresholds_table==NULL)
707 init_mv2_scatter_tables_stampede();
709 comm_size = smpi_comm_size(comm_ptr);
711 rank = smpi_comm_rank(comm_ptr);
714 sendtype_size=smpi_datatype_size(sendtype);
715 nbytes = sendcnt * sendtype_size;
717 recvtype_size=smpi_datatype_size(recvtype);
718 nbytes = recvcnt * recvtype_size;
721 // check if safe to use partial subscription mode
722 if (comm_ptr->ch.shmem_coll_ok == 1 && comm_ptr->ch.is_uniform) {
724 shmem_comm = comm_ptr->ch.shmem_comm;
725 MPID_Comm_get_ptr(shmem_comm, shmem_commptr);
726 local_size = shmem_commptr->local_size;
728 if (mv2_scatter_table_ppn_conf[0] == -1) {
729 // Indicating user defined tuning
734 if (local_size == mv2_scatter_table_ppn_conf[i]) {
740 } while(i < mv2_scatter_num_ppn_conf);
743 if (partial_sub_ok != 1) {
747 /* Search for the corresponding system size inside the tuning table */
748 while ((range < (mv2_size_scatter_tuning_table[conf_index] - 1)) &&
749 (comm_size > mv2_scatter_thresholds_table[conf_index][range].numproc)) {
752 /* Search for corresponding inter-leader function */
753 while ((range_threshold < (mv2_scatter_thresholds_table[conf_index][range].size_inter_table - 1))
755 mv2_scatter_thresholds_table[conf_index][range].inter_leader[range_threshold].max)
756 && (mv2_scatter_thresholds_table[conf_index][range].inter_leader[range_threshold].max != -1)) {
760 /* Search for corresponding intra-node function */
761 while ((range_threshold_intra <
762 (mv2_scatter_thresholds_table[conf_index][range].size_intra_table - 1))
764 mv2_scatter_thresholds_table[conf_index][range].intra_node[range_threshold_intra].max)
765 && (mv2_scatter_thresholds_table[conf_index][range].intra_node[range_threshold_intra].max !=
767 range_threshold_intra++;
770 MV2_Scatter_function = mv2_scatter_thresholds_table[conf_index][range].inter_leader[range_threshold]
771 .MV2_pt_Scatter_function;
773 if(MV2_Scatter_function == &MPIR_Scatter_mcst_wrap_MV2) {
774 #if defined(_MCST_SUPPORT_)
775 if(comm_ptr->ch.is_mcast_ok == 1
776 && mv2_use_mcast_scatter == 1
777 && comm_ptr->ch.shmem_coll_ok == 1) {
778 MV2_Scatter_function = &MPIR_Scatter_mcst_MV2;
780 #endif /*#if defined(_MCST_SUPPORT_) */
782 if(mv2_scatter_thresholds_table[conf_index][range].inter_leader[range_threshold + 1].
783 MV2_pt_Scatter_function != NULL) {
784 MV2_Scatter_function = mv2_scatter_thresholds_table[conf_index][range].inter_leader[range_threshold + 1]
785 .MV2_pt_Scatter_function;
788 MV2_Scatter_function = &MPIR_Scatter_MV2_Binomial;
793 if( (MV2_Scatter_function == &MPIR_Scatter_MV2_two_level_Direct) ||
794 (MV2_Scatter_function == &MPIR_Scatter_MV2_two_level_Binomial)) {
795 /* if( comm_ptr->ch.shmem_coll_ok == 1 &&
796 comm_ptr->ch.is_global_block == 1 ) {
797 MV2_Scatter_intra_function = mv2_scatter_thresholds_table[conf_index][range].intra_node[range_threshold_intra]
798 .MV2_pt_Scatter_function;
801 MV2_Scatter_function(sendbuf, sendcnt, sendtype,
802 recvbuf, recvcnt, recvtype, root,
805 mpi_errno = MPIR_Scatter_MV2_Binomial(sendbuf, sendcnt, sendtype,
806 recvbuf, recvcnt, recvtype, root,
811 mpi_errno = MV2_Scatter_function(sendbuf, sendcnt, sendtype,
812 recvbuf, recvcnt, recvtype, root,