-#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. */
+
/*
* implemented by Pitch Patarasuk, 07/01/2007
*/
+#include "colls_private.h"
//#include <star-reduction.c>
/* change number of core per smp-node
{
int comm_size, rank;
void *tmp_buf;
- int tag = 50;
+ int tag = COLL_TAG_ALLREDUCE;
int mask, src, dst;
MPI_Status status;
- int num_core = NUM_CORE;
+ int num_core = simcall_host_get_core(SIMIX_host_self());
+ // do we use the default one or the number of cores in the platform ?
+ // if the number of cores is one, the platform may be simulated with 1 node = 1 core
+ if (num_core == 1) num_core = NUM_CORE;
comm_size = smpi_comm_size(comm);
+
+ if((comm_size&(comm_size-1)))
+ THROWF(arg_error,0, "allreduce smp rsag rab algorithm can't be used with non power of two number of processes ! ");
+
rank = smpi_comm_rank(comm);
MPI_Aint extent;
extent = smpi_datatype_get_extent(dtype);
recv_chunk = extent * count / (comm_size / num_core);
mask = 1;
- i = 0;
curr_count = count / 2;
int phase = 0;
base_offset = 0;
- send_base_offset = 0;
- recv_base_offset = 0;
while (mask < (comm_size / num_core)) {
dst = inter_rank ^ mask;
// compute offsets
- send_base_offset = base_offset;
-
// right-handside
if (inter_rank & mask) {
recv_base_offset = base_offset + curr_count;