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