1
1
Ralph Castain f7fc19a2ca Create the ability to re-use existing daemons. Included in the commit:
1. new functionality in the pls base to check for reusable daemons and launch upon them

2. an extension of the odls API to allow each odls component to build a notify message with the "correct" data in it for adding processes to the local daemon. This means that the odls now opens components on the HNP as well as on daemons - but that's the price of allowing so much flexibility. Only the default odls has this functionality enabled - the others just return NOT_IMPLEMENTED

3. addition of a new command line option "--reuse-daemons" to orterun. The default, for now, is to NOT reuse daemons. Once we have more time to test this capability, we may choose to reverse the default. For one thing, we probably want to investigate the tradeoffs in start time for comm_spawn'd processes that reuse daemons versus launch their own. On some systems, though, having another daemon show up can cause problems - so they may want to set the default as "reuse".

This is ONLY enabled for rsh launch, at the moment. The code needing to be added to each launcher is about three lines long, so I'll be doing that as I get access to machines I can test it on.

This commit was SVN r12608.
2006-11-15 21:12:27 +00:00

88 строки
2.2 KiB
C

/*
* Copyright (c) 2004-2006 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2006 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.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/** @file:
*/
#ifndef MCA_PLS_BASE_H
#define MCA_PLS_BASE_H
/*
* includes
*/
#include "orte_config.h"
#include "opal/mca/mca.h"
#include "opal/class/opal_list.h"
#include "opal/threads/condition.h"
#include "orte/mca/pls/pls.h"
#if defined(c_plusplus) || defined(__cplusplus)
extern "C" {
#endif
/**
* Struct to hold data global to the pls framework
*/
typedef struct orte_pls_base_t {
/** Verbose/debug output stream */
int pls_output;
/** List of opened components */
opal_list_t available_components;
/** indicate a component has been selected */
bool selected;
/** selected component */
orte_pls_base_component_t selected_component;
/* orted cmd comm lock */
opal_mutex_t orted_cmd_lock;
/* orted cmd cond */
opal_condition_t orted_cmd_cond;
/** reuse daemons flag */
bool reuse_daemons;
} orte_pls_base_t;
/**
* Global instance of pls-wide framework data
*/
ORTE_DECLSPEC extern orte_pls_base_t orte_pls_base;
/*
* Global functions for MCA overall collective open and close
*/
/**
* Open the pls framework
*/
ORTE_DECLSPEC int orte_pls_base_open(void);
/**
* Select a pls module
*/
ORTE_DECLSPEC int orte_pls_base_select(void);
/**
* Close the pls framework
*/
ORTE_DECLSPEC int orte_pls_base_finalize(void);
ORTE_DECLSPEC int orte_pls_base_close(void);
#if defined(c_plusplus) || defined(__cplusplus)
}
#endif
#endif