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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
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/*
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*
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* (C) 2001 by Argonne National Laboratory.
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* See COPYRIGHT in top-level directory.
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*/
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#include "mpiimpl.h"
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/* -- Begin Profiling Symbol Block for routine MPI_Graph_map */
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#if defined(HAVE_PRAGMA_WEAK)
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#pragma weak MPI_Graph_map = PMPI_Graph_map
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#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
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#pragma _HP_SECONDARY_DEF PMPI_Graph_map MPI_Graph_map
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#elif defined(HAVE_PRAGMA_CRI_DUP)
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#pragma _CRI duplicate MPI_Graph_map as PMPI_Graph_map
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#elif defined(HAVE_WEAK_ATTRIBUTE)
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int MPI_Graph_map(MPI_Comm comm, int nnodes, const int indx[], const int edges[], int *newrank)
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__attribute__ ((weak, alias("PMPI_Graph_map")));
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#endif
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/* -- End Profiling Symbol Block */
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/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build
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the MPI routines */
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#ifndef MPICH_MPI_FROM_PMPI
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#undef MPI_Graph_map
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#define MPI_Graph_map PMPI_Graph_map
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int MPIR_Graph_map(const MPIR_Comm * comm_ptr, int nnodes,
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const int indx[]ATTRIBUTE((unused)),
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const int edges[]ATTRIBUTE((unused)), int *newrank)
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{
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MPL_UNREFERENCED_ARG(indx);
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MPL_UNREFERENCED_ARG(edges);
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/* This is the trivial version that does not remap any processes. */
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if (comm_ptr->rank < nnodes) {
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*newrank = comm_ptr->rank;
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} else {
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*newrank = MPI_UNDEFINED;
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}
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return MPI_SUCCESS;
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}
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#undef FUNCNAME
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#define FUNCNAME MPIR_Graph_map_impl
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#undef FCNAME
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#define FCNAME MPL_QUOTE(FUNCNAME)
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int MPIR_Graph_map_impl(const MPIR_Comm * comm_ptr, int nnodes,
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const int indx[], const int edges[], int *newrank)
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{
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int mpi_errno = MPI_SUCCESS;
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if (comm_ptr->topo_fns != NULL && comm_ptr->topo_fns->graphMap != NULL) {
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/* --BEGIN USEREXTENSION-- */
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mpi_errno = comm_ptr->topo_fns->graphMap(comm_ptr, nnodes,
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(const int *) indx, (const int *) edges, newrank);
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if (mpi_errno)
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MPIR_ERR_POP(mpi_errno);
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/* --END USEREXTENSION-- */
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} else {
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mpi_errno = MPIR_Graph_map(comm_ptr, nnodes,
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(const int *) indx, (const int *) edges, newrank);
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if (mpi_errno)
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MPIR_ERR_POP(mpi_errno);
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}
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fn_exit:
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return mpi_errno;
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fn_fail:
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goto fn_exit;
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}
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#endif
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#undef FUNCNAME
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#define FUNCNAME MPI_Graph_map
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#undef FCNAME
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#define FCNAME MPL_QUOTE(FUNCNAME)
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/*@
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MPI_Graph_map - Maps process to graph topology information
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Input Parameters:
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+ comm - input communicator (handle)
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. nnodes - number of graph nodes (integer)
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. indx - integer array specifying the graph structure, see 'MPI_GRAPH_CREATE'
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- edges - integer array specifying the graph structure
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Output Parameters:
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. newrank - reordered rank of the calling process; 'MPI_UNDEFINED' if the
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calling process does not belong to graph (integer)
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.N SignalSafe
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.N Fortran
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.N Errors
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.N MPI_SUCCESS
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.N MPI_ERR_TOPOLOGY
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.N MPI_ERR_COMM
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.N MPI_ERR_ARG
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@*/
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int MPI_Graph_map(MPI_Comm comm, int nnodes, const int indx[], const int edges[], int *newrank)
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{
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int mpi_errno = MPI_SUCCESS;
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MPIR_Comm *comm_ptr = NULL;
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MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_GRAPH_MAP);
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MPIR_ERRTEST_INITIALIZED_ORDIE();
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MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_GRAPH_MAP);
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/* Validate parameters, especially handles needing to be converted */
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#ifdef HAVE_ERROR_CHECKING
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{
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MPID_BEGIN_ERROR_CHECKS;
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{
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MPIR_ERRTEST_COMM(comm, mpi_errno);
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}
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MPID_END_ERROR_CHECKS;
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}
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#endif
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/* Convert MPI object handles to object pointers */
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MPIR_Comm_get_ptr(comm, comm_ptr);
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/* Validate parameters and objects (post conversion) */
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#ifdef HAVE_ERROR_CHECKING
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{
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MPID_BEGIN_ERROR_CHECKS;
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{
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/* Validate comm_ptr */
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MPIR_Comm_valid_ptr(comm_ptr, mpi_errno, FALSE);
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if (mpi_errno)
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goto fn_fail;
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/* If comm_ptr is not valid, it will be reset to null */
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MPIR_ERRTEST_ARGNULL(newrank, "newrank", mpi_errno);
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MPIR_ERRTEST_ARGNULL(indx, "indx", mpi_errno);
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MPIR_ERRTEST_ARGNULL(edges, "edges", mpi_errno);
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MPIR_ERRTEST_ARGNONPOS(nnodes, "nnodes", mpi_errno, MPI_ERR_ARG);
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}
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MPID_END_ERROR_CHECKS;
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}
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#endif /* HAVE_ERROR_CHECKING */
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/* ... body of routine ... */
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MPIR_ERR_CHKANDJUMP(comm_ptr->local_size < nnodes, mpi_errno, MPI_ERR_ARG, "**graphnnodes");
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mpi_errno = MPIR_Graph_map_impl(comm_ptr, nnodes, (const int *) indx,
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(const int *) edges, newrank);
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if (mpi_errno)
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MPIR_ERR_POP(mpi_errno);
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/* ... end of body of routine ... */
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fn_exit:
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MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_GRAPH_MAP);
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return mpi_errno;
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fn_fail:
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/* --BEGIN ERROR HANDLING-- */
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#ifdef HAVE_ERROR_CHECKING
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{
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mpi_errno =
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MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,
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"**mpi_graph_map", "**mpi_graph_map %C %d %p %p %p", comm, nnodes,
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indx, edges, newrank);
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}
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#endif
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mpi_errno = MPIR_Err_return_comm(comm_ptr, FCNAME, mpi_errno);
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goto fn_exit;
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/* --END ERROR HANDLING-- */
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}
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