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//
// loadave1.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.
//
// Environment: 1 Server / 1 CNode 

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

// **************************************************************************
//
// Global variable declarations
//
// **************************************************************************
Int nrun;

// **************************************************************************
//
// main scheduling code
//
// **************************************************************************
sched_main()
{
	Server	master;
	CNode	node;

	Set Job	jobs;
	Job	j;

	// get local server
	master = AllServersHeadGet();

	// get the first node specified in the configuration file which should
	// match the master server host
	node   = AllNodesHeadGet();

	nrun = 0;
	if( CNodeStateGet(node) NEQ CNODE_UP OR
                              CNodeLoadAveGet(node) GE 2.0 ) {
		return();
	}

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

	    // CONDITION: Consider jobs only that are not running with cput
	    // requirement < 60, and run job synchronously

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

		if( JobAction(j, SYNCRUN, NULLSTR) EQ SUCCESS ) {
			nrun=nrun + 1;
		}
		if( nrun GT 2 ) {
			return();
		}
	    }
	} // foreach jobs
}