+2
At 09:39 AM 7/24/2005 -0400, Tom Maguire wrote:
+1 Karl
Frey’s Law: “Every 5 years the number of architecture components
double and
the ability to comprehend them halves”
Perfection is achieved, not when there is nothing more to add, but
when
there is nothing left to take away. Antoine de
Saint-Exupery
T o m M a g u i r e
STSM, On Demand Architecture
Poughkeepsie, NY 12601
Karl
Czajkowski
<karlcz@univa.com
>
To
Sent
by:
Steven
Newhouse
owner-ogsa-bes-wg
<s.newhouse@omii.ac.uk>
@ggf.org
cc
ogsa-bes-wg@ggf.org
Subject
07/24/2005 01:13
Re: [ogsa-bes-wg] Management
AM
Functions in
BES
On Jul 23, Steven Newhouse modulated:
> >Discussion: Sections 3.4, 3.5 & 3.6. Having 3 management
operations in
> >the BES specification until generic OGSA management structure
defined?
>
> The operations in 3.4 & 3.5 (Start & Stop
AcceptingNewActivities) I see
> as being a service specific management function (i.e. they
effectively
> alter the behavior of one specific operation within the
service).
>
While its semantics references a BES operation, it seems to me that
it
is a more general management pattern for any service that has a
stateful, factory-like interface: stop accepting/creating new work
items but continue processing the existing ones (whatever they
are).
The BES-specific meaning could just as easily be specified by
calling
out this work acceptance model so that it can be related to an
external management mechanism.
I think it is wrong to burden BES implementations with these kinds
of
management functions that are specific to a hosting environment.
I
think the right path here is to engage in management standards for
web
services and create profiles to compose these with a basic
execution
service if you require both.
I cannot see these functions as being more important interop points
than any of the other security and policy management functions
which
everyone seems to agree are out of scope. If you must use
localized
mechanisms to do practical management of a BES installation, I am
not
sure what these functions buy you.
karl
--
Karl Czajkowski
karlcz@univa.com
_______________________________________________________________
Ian
Foster
www.mcs.anl.gov/~foster
Math & Computer Science Div. Dept of Computer Science
Argonne National Laboratory The University of
Chicago
Argonne, IL 60439, U.S.A. Chicago, IL 60637,
U.S.A.
Tel: 630 252
4619
Fax: 630 252 1997
Globus Alliance,
www.globus.org