[GE users] Description for Load Scaling, Usage Scaling parameters

stephendennis sdennis at univa.com
Tue Dec 14 19:16:23 GMT 2010

Hi Harry

I use a spreadsheet and mapping out the minimum and maximum values that I will
consider for load parameters and then add in some scaling parameters to check
that the resulting load results are as I expect.

The matrix of values and the applied formula makes it easier to confirm correctness
and behaviour of the load_formula.

Note that the queue load_threshold is applied first so it can be used to cap the
load factor range.

Here is an example.


From: hjmangalam [harry.mangalam at uci.edu]
Sent: Tuesday, December 14, 2010 1:17 PM
To: users at gridengine.sunsource.net
Subject: [GE users] Description for Load Scaling, Usage Scaling parameters

Is there a FAQ, whitepaper, doc, manual or wiki that describes the
individual parameters that can be set in the execution host
configuration (esp in the: 'Load Scaling' & 'Usage Scaling' section
that is offered by qmon?

[ qmon -> Host Configuration -> Add -> Scaling -> Load Scaling & Usage

This seems to be the same list of parameters that can be generated by
the 'qconf -sc' command.

Some of them seem to be straightforward, at least until you run into
others that seem to conflict (processors vs slots, for example).

A few others are explained in the 'complex' or 'queue_conf' man mages,
but there doesn't seem to be any doc that centralizes the explanation
of what they actually mean/imply.  What's left is to randomly assign
values and wait for a job to explode and then try to do an autopsy on
the remains.

Is there such a doc?  I'd be very happy to RTFM.
Harry Mangalam - Research Computing, NACS, Rm 225 MSTB, UC Irvine
[ZOT 2225] / 92697  Google Voice Multiplexer: (949) 478-4487
MSTB=Bldg 415 (G-5 on <http://today.uci.edu/pdf/UCI_09_map_campus.pdf>
Lat/Long: 33.642025,-117.844414 (paste into google maps)


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