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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2008 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2011 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2013-2015 Intel, Inc. All rights reserved
* Copyright (c) 2013-2015 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2018 Triad National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/**
* @file
*
* Dynamic Process Management Interface
*
*/
#ifndef OMPI_DPM_H
#define OMPI_DPM_H
#include "ompi_config.h"
#include "ompi/info/info.h"
#include "ompi/communicator/communicator.h"
BEGIN_C_DECLS
/*
* Initialize the DPM system
*/
int ompi_dpm_init(void);
/*
* Connect/accept communications
*/
int ompi_dpm_connect_accept(ompi_communicator_t *comm, int root,
const char *port, bool send_first,
ompi_communicator_t **newcomm);
/**
* Executes internally a disconnect on all dynamic communicators
* in case the user did not disconnect them.
*/
int ompi_dpm_disconnect(ompi_communicator_t *comm);
/*
* Dynamically spawn processes
*/
int ompi_dpm_spawn(int count, char const *array_of_commands[],
char **array_of_argv[],
const int array_of_maxprocs[],
const MPI_Info array_of_info[],
const char *port_name);
/*
* This routine checks, whether an application has been spawned
* by another MPI application, or has been independently started.
* If it has been spawned, it establishes the parent communicator.
* Since the routine has to communicate, it should be among the last
* steps in MPI_Init, to be sure that everything is already set up.
*/
int ompi_dpm_dyn_init(void);
/*
* Interface for mpi_finalize to call to ensure dynamically spawned procs
* collectively finalize
*/
int ompi_dpm_dyn_finalize(void);
/* this routine counts the number of different jobids of the processes
given in a certain communicator. If there is more than one jobid,
we mark the communicator as 'dynamic'. This is especially relevant
for the MPI_Comm_disconnect *and* for MPI_Finalize, where we have
to wait for all still connected processes.
*/
void ompi_dpm_mark_dyncomm(ompi_communicator_t *comm);
/*
* Define a rendezvous point for a dynamically spawned job
*/
int ompi_dpm_open_port(char *port_name);
/*
* Unpublish the rendezvous point
*/
int ompi_dpm_close_port(const char *port_name);
END_C_DECLS
#endif /* OMPI_DPM_H */
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