//
//         OpenPBS (Portable Batch System) v2.3 Software License
// 
// Copyright (c) 1999-2000 Veridian Information Solutions, Inc.
// All rights reserved.
// 
// ---------------------------------------------------------------------------
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// other than those described below, or to purchase support for this software,
// please contact Veridian Systems, PBS Products Department ("Licensor") at:
// 
//    www.OpenPBS.org  +1 650 967-4675                  sales@OpenPBS.org
//                        877 902-4PBS (US toll-free)
// ---------------------------------------------------------------------------
// 
// This license covers use of the OpenPBS v2.3 software (the "Software") at
// your site or location, and, for certain users, redistribution of the
// Software to other sites and locations.  Use and redistribution of
// OpenPBS v2.3 in source and binary forms, with or without modification,
// are permitted provided that all of the following conditions are met.
// After December 31, 2001, only conditions 3-6 must be met:
// 
// 1. Commercial and/or non-commercial use of the Software is permitted
//    provided a current software registration is on file at www.OpenPBS.org.
//    If use of this software contributes to a publication, product, or
//    service, proper attribution must be given; see www.OpenPBS.org/credit.html
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// 2. Redistribution in any form is only permitted for non-commercial,
//    non-profit purposes.  There can be no charge for the Software or any
//    software incorporating the Software.  Further, there can be no
//    expectation of revenue generated as a consequence of redistributing
//    the Software.
// 
// 3. Any Redistribution of source code must retain the above copyright notice
//    and the acknowledgment contained in paragraph 6, this list of conditions
//    and the disclaimer contained in paragraph 7.
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// 6. All advertising materials mentioning features or use of the Software must
//    display the following acknowledgment:
// 
//     "This product includes software developed by NASA Ames Research Center,
//     Lawrence Livermore National Laboratory, and Veridian Information
//     Solutions, Inc.
//     Visit www.OpenPBS.org for OpenPBS software support,
//     products, and information."
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// 7. DISCLAIMER OF WARRANTY
// 
// THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. ANY EXPRESS
// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT
// ARE EXPRESSLY DISCLAIMED.
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// IN NO EVENT SHALL VERIDIAN CORPORATION, ITS AFFILIATED COMPANIES, OR THE
// U.S. GOVERNMENT OR ANY OF ITS AGENCIES BE LIABLE FOR ANY DIRECT OR INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 
// This license will be governed by the laws of the Commonwealth of Virginia,
// without reference to its choice of law rules.
// 
//
//
// loadave3.basl: A simple scheduler to run up to 3 jobs if the load average
// 		  is less than 2.0 and the job cput is less than 60 seconds.
//		  This is for each of the server hosts it knows about.
//
// NOTE: This is the same as loadave2.basl but references to queues are removed
//	 by making use of the function "ServerJobsGet()".
//
// Environment: Many Server / Many CNode 
//
// Configuration file:
//		$serverhost host1 port1
//		$serverhost host2 port2	
//		...
//		$momhost host1 port1
//		$momhost host2 port2
//		...

// **************************************************************************
//
// User-defined Functions
//
// **************************************************************************

CNode findCNodeByName(String host_name)
{
	Set CNode	exec_hosts;
	CNode		n;
	
	// get the nodes to the system via the configuration file
	exec_hosts = AllNodesGet();
	foreach( n in exec_hosts ) {
		if( CNodeNameGet(n) EQ host_name ) {
			return(n);
		}
	}
	return(NOCNODE);
}

// **************************************************************************
//
// Global variable declarations
//
// **************************************************************************

Int nrun;

// **************************************************************************
//
// main scheduling code
//
// **************************************************************************
sched_main()
{
	Set Server serv_hosts;
	Server	h;

	CNode	node;
	
	Set Job	jobs;
	Job	j;

	String	host_name;

	Float	loadave;

	// get all servers known to the system
	serv_hosts = AllServersGet();


	foreach( h in serv_hosts ) {
	  
	   nrun = 0;

	   host_name = ServerInetAddrGet(h);
	   node = findCNodeByName(host_name);
	   if( loadave GE 2.0 OR loadave LT 0.0 ) {
		continue;
	   }

	   jobs = ServerJobsGet(h);
	   foreach( j in jobs ) {

		if( JobStateGet(j) NEQ RUNNING AND
		    JobIntResReqGet(j, "cput") LT 60 ) {	

			// run job syncronously
			if( JobAction(j, SYNCRUN, NULLSTR) EQ SUCCESS ) {
				nrun=nrun+1;
	              	}
	              	if( nrun GT 2 ) {
				break;
	              	}
		}

	   } // foreach jobs

        } // foreach h
}