src/smpi/colls/coll_tuned_topo.h

   1 /*
   2  * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
   3  *                         University Research and Technology
   4  *                         Corporation.  All rights reserved.
   5  * Copyright (c) 2004-2005 The University of Tennessee and The University
   6  *                         of Tennessee Research Foundation.  All rights
   7  *                         reserved.
   8  * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
   9  *                         University of Stuttgart.  All rights reserved.
  10  * Copyright (c) 2004-2005 The Regents of the University of California.
  11  *                         All rights reserved.
  12  * $COPYRIGHT$
  13  *
  14  * Additional copyrights may follow
  15  *
  16  * $HEADER$
  17  */
  18
  19 #ifndef MCA_COLL_TUNED_TOPO_H_HAS_BEEN_INCLUDED
  20 #define MCA_COLL_TUNED_TOPO_H_HAS_BEEN_INCLUDED
  21
  22 #include "colls_private.h"
  23
  24 #define MAXTREEFANOUT 32
  25
  26 #define COLL_TUNED_COMPUTED_SEGCOUNT(SEGSIZE, TYPELNG, SEGCOUNT)        \
  27     if( ((SEGSIZE) >= (TYPELNG)) &&                                     \
  28         ((SEGSIZE) < ((TYPELNG) * (SEGCOUNT))) ) {                      \
  29         size_t residual;                                                \
  30         (SEGCOUNT) = (int)((SEGSIZE) / (TYPELNG));                      \
  31         residual = (SEGSIZE) - (SEGCOUNT) * (TYPELNG);                  \
  32         if( residual > ((TYPELNG) >> 1) )                               \
  33             (SEGCOUNT)++;                                               \
  34     }                                                                   \
  35
  36
  37     typedef struct ompi_coll_tree_t {
  38         int32_t tree_root;
  39         int32_t tree_fanout;
  40         int32_t tree_bmtree;
  41         int32_t tree_prev;
  42         int32_t tree_next[MAXTREEFANOUT];
  43         int32_t tree_nextsize;
  44     } ompi_coll_tree_t;
  45
  46     ompi_coll_tree_t*
  47     ompi_coll_tuned_topo_build_tree( int fanout,
  48                                      MPI_Comm com,
  49                                      int root );
  50     ompi_coll_tree_t*
  51     ompi_coll_tuned_topo_build_in_order_bintree( MPI_Comm comm );
  52
  53     ompi_coll_tree_t*
  54     ompi_coll_tuned_topo_build_bmtree( MPI_Comm comm,
  55                                        int root );
  56     ompi_coll_tree_t*
  57     ompi_coll_tuned_topo_build_in_order_bmtree( MPI_Comm comm,
  58                                                 int root );
  59     ompi_coll_tree_t*
  60     ompi_coll_tuned_topo_build_chain( int fanout,
  61                                       MPI_Comm com,
  62                                       int root );
  63
  64     int ompi_coll_tuned_topo_destroy_tree( ompi_coll_tree_t** tree );
  65
  66     /* debugging stuff, will be removed later */
  67     int ompi_coll_tuned_topo_dump_tree (ompi_coll_tree_t* tree, int rank);
  68
  69 #endif  /* MCA_COLL_TUNED_TOPO_H_HAS_BEEN_INCLUDED */
  70