+/* 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. */
+
#include "colls_private.h"
#ifndef NUM_CORE
int inter_dst, inter_src;
comm_size = smpi_comm_size(comm);
+
+ 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;
+
+ 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);
}