[ogsa-wg] RE: GRIDtoday Edition: Tony Hey: 'Challenging Times for GGF & Standards'

[Tom Maguire]

+1 to Dave and Frank


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


                                                                           
             David Snelling                                                
             <David.Snelling at U                                             
             K.Fujitsu.com>                                             To 
             Sent by:                  Frank Siebenlist                    
             owner-ogsa-wg at ggf         <franks at mcs.anl.gov>                
             .org                                                       cc 
                                       Ian Foster <foster at mcs.anl.gov>,    
                                       Dennis Gannon                       
             03/01/2005 05:36          <gannon at cs.indiana.edu>, Samuel     
             AM                        Meder <meder at mcs.anl.gov>, ogsa-wg  
                                       <ogsa-wg at gridforum.org>, Tony Hey   
                                       <tony.hey at epsrc.ac.uk>              
                                                                   Subject 
                                       Re: [ogsa-wg] RE: GRIDtoday         
                                       Edition: Tony Hey: 'Challenging     
                                       Times for GGF & Standards'          
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Frank,

I like the way you put this:

On 1 Mar 2005, at 7:08, Frank Siebenlist wrote:

> ...but if we model the usage patterns with wsrf, and wsrf and
> ws-transfer are doing conceptually the same thing, isn't the ogsa-wg
> doing just that: it uses an abstraction that can be used to describe
> the relevant usage patterns without losing any generality.

I full agree.

I think a very interesting study, for starters, would be to implement
the WSRF Resource Properties interfaces (in other words - the OGSA
Abstraction Layer for State Access) in terms of WS-Transfer. The
reverse is already possible in WSRF-RP trough the
GetResourcePropertyDocument (equivalent to the WS-Transfer GET).

I'm sure the rest of the lowest OGSA abstraction layers maps to other
infrastructures just as easily.

> The idea of inventing "yet an other abstraction layer" doesn't sound
> very productive.

Agreed. But now that this lowest layer is well established, higher
level services need to be constructed, e.g. for data access, job
submission and management, .... These higher levels will be more
isolated from the lower level details, but much simpler to construct
given that these lower layers are in place.

--

Take care:

     Dr. David Snelling < David . Snelling . UK . Fujitsu . com >
     Fujitsu Laboratories of Europe
     Hayes Park Central
     Hayes End Road
     Hayes, Middlesex  UB4 8FE

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