root/ompi/mpi/c/ineighbor_alltoall.c

DEFINITIONS

1. MPI_Ineighbor_alltoall

   1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
   2 /*
   3  * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
   4  *                         University Research and Technology
   5  *                         Corporation.  All rights reserved.
   6  * Copyright (c) 2004-2017 The University of Tennessee and The University
   7  *                         of Tennessee Research Foundation.  All rights
   8  *                         reserved.
   9  * Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
  10  *                         University of Stuttgart.  All rights reserved.
  11  * Copyright (c) 2004-2005 The Regents of the University of California.
  12  *                         All rights reserved.
  13  * Copyright (c) 2007      Cisco Systems, Inc.  All rights reserved.
  14  * Copyright (c) 2012      Oak Ridge National Laboratory. All rights reserved.
  15  * Copyright (c) 2013      Los Alamos National Security, LLC. All rights
  16  *                         reserved.
  17  * Copyright (c) 2014-2018 Research Organization for Information Science
  18  *                         and Technology (RIST). All rights reserved.
  19  * Copyright (c) 2017      IBM Corporation.  All rights reserved.
  20  * $COPYRIGHT$
  21  *
  22  * Additional copyrights may follow
  23  *
  24  * $HEADER$
  25  */
  26 
  27 #include "ompi_config.h"
  28 #include <stdio.h>
  29 
  30 #include "ompi/mpi/c/bindings.h"
  31 #include "ompi/runtime/params.h"
  32 #include "ompi/communicator/communicator.h"
  33 #include "ompi/errhandler/errhandler.h"
  34 #include "ompi/datatype/ompi_datatype.h"
  35 #include "ompi/memchecker.h"
  36 #include "ompi/mca/topo/topo.h"
  37 #include "ompi/mca/topo/base/base.h"
  38 #include "ompi/runtime/ompi_spc.h"
  39 
  40 #if OMPI_BUILD_MPI_PROFILING
  41 #if OPAL_HAVE_WEAK_SYMBOLS
  42 #pragma weak MPI_Ineighbor_alltoall = PMPI_Ineighbor_alltoall
  43 #endif
  44 #define MPI_Ineighbor_alltoall PMPI_Ineighbor_alltoall
  45 #endif
  46 
  47 static const char FUNC_NAME[] = "MPI_Ineighbor_alltoall";
  48 
  49 
  50 int MPI_Ineighbor_alltoall(const void *sendbuf, int sendcount, MPI_Datatype sendtype,
  51                            void *recvbuf, int recvcount, MPI_Datatype recvtype,
  52                            MPI_Comm comm, MPI_Request *request)
  53 {
  54     size_t sendtype_size, recvtype_size;
  55     int err;
  56 
  57     SPC_RECORD(OMPI_SPC_INEIGHBOR_ALLTOALL, 1);
  58 
  59     MEMCHECKER(
  60         memchecker_comm(comm);
  61         if (MPI_IN_PLACE != sendbuf) {
  62             memchecker_datatype(sendtype);
  63             memchecker_call(&opal_memchecker_base_isdefined, (void *)sendbuf, sendcount, sendtype);
  64         }
  65         memchecker_datatype(recvtype);
  66         memchecker_call(&opal_memchecker_base_isaddressable, recvbuf, recvcount, recvtype);
  67     );
  68 
  69     if (MPI_PARAM_CHECK) {
  70 
  71         /* Unrooted operation -- same checks for all ranks on both
  72            intracommunicators and intercommunicators */
  73 
  74         err = MPI_SUCCESS;
  75         OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
  76         if (ompi_comm_invalid(comm) || OMPI_COMM_IS_INTER(comm)) {
  77             return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM,
  78                                           FUNC_NAME);
  79         } else if (! OMPI_COMM_IS_TOPO(comm)) {
  80             return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_TOPOLOGY,
  81                                           FUNC_NAME);
  82         } else if (MPI_IN_PLACE == sendbuf || MPI_IN_PLACE == recvbuf) {
  83             return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
  84                                           FUNC_NAME);
  85         } else {
  86             OMPI_CHECK_DATATYPE_FOR_SEND(err, sendtype, sendcount);
  87             OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
  88             OMPI_CHECK_DATATYPE_FOR_RECV(err, recvtype, recvcount);
  89             OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
  90         }
  91 
  92         ompi_datatype_type_size(sendtype, &sendtype_size);
  93         ompi_datatype_type_size(recvtype, &recvtype_size);
  94         if ((sendtype_size*sendcount) != (recvtype_size*recvcount)) {
  95             return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TRUNCATE, FUNC_NAME);
  96         }
  97 
  98         if( OMPI_COMM_IS_CART(comm) ) {
  99             const mca_topo_base_comm_cart_2_2_0_t *cart = comm->c_topo->mtc.cart;
 100             if( 0 > cart->ndims ) {
 101                 return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
 102             }
 103         }
 104         else if( OMPI_COMM_IS_GRAPH(comm) ) {
 105             int degree;
 106             mca_topo_base_graph_neighbors_count(comm, ompi_comm_rank(comm), &degree);
 107             if( 0 > degree ) {
 108                 return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
 109             }
 110         }
 111         else if( OMPI_COMM_IS_DIST_GRAPH(comm) ) {
 112             const mca_topo_base_comm_dist_graph_2_2_0_t *dist_graph = comm->c_topo->mtc.dist_graph;
 113             int indegree  = dist_graph->indegree;
 114             int outdegree = dist_graph->outdegree;
 115             if( indegree <  0 || outdegree <  0 ) {
 116                 return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
 117             }
 118         }
 119     }
 120 
 121     OPAL_CR_ENTER_LIBRARY();
 122 
 123     /* Invoke the coll component to perform the back-end operation */
 124     err = comm->c_coll->coll_ineighbor_alltoall(sendbuf, sendcount, sendtype,
 125                                                recvbuf, recvcount, recvtype, comm,
 126                                                request, comm->c_coll->coll_ineighbor_alltoall_module);
 127     OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
 128 }