+/* 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"
int smpi_coll_tuned_allreduce_rab_rdb(void *sbuff, void *rbuff, int count,
MPI_Datatype dtype, MPI_Op op,
MPI_Comm comm)
{
- int nprocs, rank, type_size, tag = 543;
+ int nprocs, rank, tag = COLL_TAG_ALLREDUCE;
int mask, dst, pof2, newrank, rem, newdst, i,
send_idx, recv_idx, last_idx, send_cnt, recv_cnt, *cnts, *disps;
- MPI_Aint lb, extent;
+ MPI_Aint extent;
MPI_Status status;
void *tmp_buf = NULL;
-#ifdef MPICH2_REDUCTION
- MPI_User_function *uop = MPIR_Op_table[op % 16 - 1];
-#else
- MPI_User_function *uop;
- struct MPIR_OP *op_ptr;
- op_ptr = (MPI_User_function *) MPIR_ToPointer(op);
- uop = op_ptr->op;
-#endif
-
nprocs = smpi_comm_size(comm);
rank = smpi_comm_rank(comm);
extent = smpi_datatype_get_extent(dtype);
- tmp_buf = (void *) xbt_malloc(count * extent);
-
- MPIR_Localcopy(sbuff, count, dtype, rbuff, count, dtype);
+ tmp_buf = (void *) smpi_get_tmp_sendbuffer(count * extent);
- type_size = smpi_datatype_size(dtype);
+ smpi_datatype_copy(sbuff, count, dtype, rbuff, count, dtype);
// find nearest power-of-two less than or equal to comm_size
pof2 = 1;
// do the reduction on received data. since the
// ordering is right, it doesn't matter whether
// the operation is commutative or not.
- (*uop) (tmp_buf, rbuff, &count, &dtype);
+ smpi_op_apply(op, tmp_buf, rbuff, &count, &dtype);
// change the rank
newrank = rank / 2;
// This algorithm is used only for predefined ops
// and predefined ops are always commutative.
- (*uop) ((char *) tmp_buf + disps[recv_idx] * extent,
- (char *) rbuff + disps[recv_idx] * extent, &recv_cnt, &dtype);
+ smpi_op_apply(op, (char *) tmp_buf + disps[recv_idx] * extent,
+ (char *) rbuff + disps[recv_idx] * extent, &recv_cnt, &dtype);
// update send_idx for next iteration
send_idx = recv_idx;
smpi_mpi_recv(rbuff, count, dtype, rank + 1, tag, comm, &status);
}
- free(tmp_buf);
+ smpi_free_tmp_buffer(tmp_buf);
return MPI_SUCCESS;
}