IZ373: Allow load values and expressions as attribute values and load thresholds

[andy]

[Imported from gridengine issuezilla ​http://gridengine.sunsource.net/issues/show_bug.cgi?id=373]

        Issue #:      373              Platform:     All           Reporter: andy (andy)
       Component:     gridengine          OS:        All
     Subcomponent:    scheduling       Version:      current          CC:    None defined
        Status:       NEW              Priority:     P3
      Resolution:                     Issue type:    ENHANCEMENT
                                   Target milestone: ---
      Assigned to:    andreas (andreas)
      QA Contact:     andreas
          URL:
       * Summary:     Allow load values and expressions as attribute values and load thresholds
   Status whiteboard:
      Attachments:

     Issue 373 blocks:
   Votes for issue 373:


   Opened: Thu Sep 5 02:13:00 -0700 2002 
------------------------


User Bernd Dammann (<bd@imm.dtu.dk>) suggests to
have more flexibility in expressing load
thresholds and complex attribute values.

The objective is to avoid the need of manual
reconfiguration of SGE if the configuration of the
hardware changes. According the Bernd other RMS
systems like IBM's LL and Condor allow this.

From his mail:

"Would it be possible to enhance the functionality
of GE by allowing for the use of internal
parameters in definitions of other parameters,
i.e. the suspend/load thresholds 'load_avg =
num_proc' (this one is easy: np_load_avg = 1.0) or
'load_avg = num_proc - 2' (more difficult), or the
definition of slots in the host configuration:
'slots = num_proc -2' ? This is possible in other
queuing systems, e.g. IBM's LoadLeveler,
Condor, where one can combine internal (and user
defined) parameters into logical and arithmetical
expressions."

   ------- Additional comments from sgrell Mon Dec 12 03:15:30 -0700 2005 -------
Changed subcomponent.

Stephan