[GRAAP-WG] Re-negotiation Protocol Proposal

[Wolfgang Ziegler]

Hi Toshi & Karl,

I am about to re-draw the slides of Toshi for inclusion
in a document that presents the ideas of the three presentations
given in the second and third GRAAP session.

I will also try to re-draw slide 7 taking into account
the discussion on the list and then sent it to the list
again to see whether I understood Toshi, Karl and the
ongoing discussion ;-)


Best regards

Wolfgang



Toshiyuki Nakata schrieb/wrote:
> Hi Again:
>> I wouldn't say slide 7 captures my comment.  My endpoint rendering
>> doesn't imply a third entity, just that the responder entity is
>> rendered with multiple endpoints to allow a more general scenario such
>> as renegotiation that could combine multiple agreements (something you
>> couldn't do if the preceding agreement is always implied like the
>> "this" pointer in a simple object system):
>>
>>  1.  agreement initiator  sends offer  to agreement factory
>>
>>  2.  agreement factory  sends accept  (sync or async reply)
>>
>>  ... repeat 1-2 for multiple agreements...
>>
>>  3.  renegotiation initiator  sends offer  to agreement factory 
>>
>>  4.  agreement factory  sends accept   (sync or async reply)
>>
> 
> These are somethngs I can guess and feel provide an elegant solution, 
> but I feel that the implicit 
> messages needed here between the Agreement Responder and the
> Agreement Factory would needed to be spelt out or (My guess) would always,
> fail..
> 
> 
> #Karl please tell me that I'm wrong...
> 
> So for the moment, I personally  feel that a more simple 
> protocol either using PendingXXX would be better..
> 
> #Your thoughts everyone :-)
> Best Regards
> Toshi @ safely moved from freezing East Coast US to a warmer Silicon Valley
> 
> 
> -----
> Toshiyuki Nakata 中田　登志之
> Executive Chief Engineer, Central Research Lab. NEC
> 1753, Shimonumabe, Nakahara-Ku,
> Kawasaki,Kanagawa 211-8666,Japan
> Tel +81-44-431-7653 (NEC Internal 22-60035)
> Fax +81-44-431-7609 (NEC Internal 22-60509)
>  
> 
> 
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-- 
          Wolfgang Ziegler    www.scai.fraunhofer.de/ziegler.html
    Fraunhofer-Institute for Algorithms and Scientific Computing (SCAI)
           Schloss Birlinghoven, D-53754 Sankt Augustin, Germany
               Tel: +49 2241 14 2258; Fax: +49 2241 14 42258

              CoreGRID Network of Excellence   www.coregrid.net
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