-#include "colls_private.h"
+/* Copyright (c) 2013-2014. The SimGrid Team.
+ * All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
-#ifndef NUM_CORE
-#define NUM_CORE 4
-#endif
+#include "colls_private.h"
int smpi_coll_tuned_allgather_loosely_lr(void *sbuf, int scount,
MPI_Datatype stype, void *rbuf,
MPI_Comm comm)
{
int comm_size, rank;
- int tag = 50;
+ int tag = COLL_TAG_ALLGATHER;
int i, j, send_offset, recv_offset;
int intra_rank, inter_rank, inter_comm_size, intra_comm_size;
int inter_dst, inter_src;
comm_size = smpi_comm_size(comm);
+
+if(smpi_comm_get_leaders_comm(comm)==MPI_COMM_NULL){
+ smpi_comm_init_smp(comm);
+ }
+ int num_core=1;
+ if (smpi_comm_is_uniform(comm)){
+ num_core = smpi_comm_size(smpi_comm_get_intra_comm(comm));
+ }
+
+ if(comm_size%num_core)
+ THROWF(arg_error,0, "allgather loosely lr algorithm can't be used with non multiple of NUM_CORE=%d number of processes ! ",num_core);
+
rank = smpi_comm_rank(comm);
MPI_Aint rextent, sextent;
rextent = smpi_datatype_get_extent(rtype);
MPI_Status status;
- intra_rank = rank % NUM_CORE;
- inter_rank = rank / NUM_CORE;
- inter_comm_size = (comm_size + NUM_CORE - 1) / NUM_CORE;
- intra_comm_size = NUM_CORE;
+ intra_rank = rank % num_core;
+ inter_rank = rank / num_core;
+ inter_comm_size = (comm_size + num_core - 1) / num_core;
+ intra_comm_size = num_core;
int src_seg, dst_seg;
} // intra loop
- // wait for inter communication to finish for these rounds (# of round equals NUM_CORE)
+ // wait for inter communication to finish for these rounds (# of round equals num_core)
if (i != inter_comm_size - 1) {
smpi_mpi_wait(&inter_rrequest, &status);
}