Copyright Notice

 Copyright I.N.R.A. - C.N.R.S.
 emmanuel.courcelle@toulouse.inra.fr
 jerome.gouzy@toulouse.inra.fr
 This software is a computer program whose purpose is to help you run 
 your scripts on parallel computers.
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NAME

PARALOOP::SCHEDULER::System - Scheduler object for SMP machines, or for any architecture with --local


Derives from...

PARALOOP::SCHEDULER::Scheduler


DESCRIPTION

This scheduler is used for a multiprocessor SMP machine. It is also used with any architecture, if the --local switch is specified.


CONFIGURATION FILE PARAMETERS

 PARALOOP_Scheduler
      System
 PARALOOP_error_directory 
      The name of the error directory


PUBLIC METHODS

 WhatParaloopScheduler
    my $msg=$obj->WhatParaloopScheduler()
 Parameters
    my $msg=$obj->Parameters()
 New
    my $obj = PARALOOP::Dummy->New(-params => $params, -log => $log);
 Submit
    my $job_id = $obj->Submit();
 RemTime
    my $rem_time = $obj->RemTime(); 
    
 IsSelfPossible
    If (&$obj->IsSelPossible()==1)...
 JobId
    my $job_id = $obj->JobId();


METHODS AND SUBROUTINES - DETAILED DESCRIPTION

Function WhatParaloopScheduler

 Usage:    my $msg = PARALOOP::SCHEDULER::System::WhatParaloopScheduler()
        or my $msg = $obj->WhatParaloopScheduler()
 Function: Return some information (2 lines max) on the scheduler
           An object is NOT considered as a scheduler if this function is not implemented
 Arg:      none ($self is ignored)
 Return:   A message describing the plugin (1 or 2 lines)

Function Parameters

 Usage:    my $msg = PARALOOP::SCHEDULER::System::Parameters()
        or my $msg = $obj->Parameters()
 Function: Return the list of allowed parameters for this scheduler
           If your scheduler defines some parameters, it is good pratice adding this function,
           to display those parameters when the --parameters switch of paraloop.pl is used.
           However, this is not mandatory
 Arg:      none ($self is ignored)
 Return:   A message describing the scheduler parameters (1 line / parameter)

procedure IsSelfPossible

 Usage:  if ($obj->IsSelfPossible()) ... 
 Access: public (use New instead)
 function: return 1 ONLY if slave job: there is no self submit, but we do not
           generate an error. This is important for supporting fair_time_limit in slave mode
 Return:   0/1
 Args:     none
 globals:  none

procedure _Init

 Usage:  CALLED BY UNIVERSAL::New
         my $obj = PARALOOP::Dummy->New(-params => $params, -log => $log);
 Access: private (use New instead)
 procedure: Init the object
 Return:   nothing
 Args:     -params = an object of class ParamParser (already initialized)
           -log    = an object of class Logger (already initialized)
 globals:  none

Function Submit

 Usage:     &$obj->Submit()
 Function:  Run another instance of paraloop
 Arg :      none
 Return:    the JobId
=cut

sub Submit { my $self = shift; my $o_param = $self->{'__params'}; my $o_log = $self->{'__log'}; my $subcount = $self->_IncSubCount(); my $current_mode = $o_param->Get('current_mode'); my $job_id; if ($subcount > 1) { if ($current_mode eq 'SLAVE') { $o_log->Trace(``SLAVE MODE - THIS JOB WILL BE RESTARTED BY THE MASTER\n'', '*', '1'); $job_id = 0; } else { $o_log->Trace(``ERROR - THIS SCHEDULER CANNOT RESUBMIT ITSEF\n'', '*', '1'); croak( 'ERROR - With this scheduler, paraloop should resubmit itself ONLY 1 time.' ); } } else { print ``calling $0 &\n'' if ($o_param->IsDefined('verbose')); $o_param->Dump('ENV'); $job_id = &RunExtNoWait(-cmd => $0); $o_log->Trace(``$0\n'', '', '2'); } $self->_SyncLockFile($job_id); return $job_id; }

Procedure IoRedirect

 Usage:     &$obj->IoRedirect()
 Procedure: Redirect stdout and stderr to some file ($job_id.EO)
            We DO NOT close STDIN, because it will be impossible later to redirect STDOUT
            (I think there is due to a bug in perl...)
            Close stdin
 Arg :      none
 Return:    none

Function JobId

 Usage:     my $job_id = $obj->JobId()
 Function:  Ask the system for the job id
            The variable $$ is returned
 Arg :      none
 Return :   the job Id

Function IsLaunched

 Usage:    If (&$obj->IsLaunched($job_id)==1)...
 Function: Check the presence of the job in the system
 Arg:      none
 Return:   0 ==> The job is not known by the system, or is defunct
           1 ==> The job is known (may be in different states: Run, Queue, etc)

Procedure KillJob

 Usage:    $obj->KillJob($job_id);
 Function: Kill the job passed by parameter
           Call kill $job_id
 Arg:      job_id: the job Id to kill
 Return:   none