[Ogsa-data] new version of architecture picture

[Vijayshankar Raman]

Ann, as background, here's my comment from our previous meeting.
  Is the layering in the architecture picture supposed to mean that
components in layer x talk primarily to components in layer x+/-1 (i.e.
does each layer make the services below it transparent to the services
above it)?
       If yes, then some services will have to be moved around --- e.g.
databases like to talk directly to storage without distribution being
virtualized, transport and replication services like to talk to lower
levels of network stack (like UDP), etc.
       If not, why do we order the layers? Is the layering simply a
classification?

Shankar
IBM Almaden Research Center, 650 Harry Road, San Jose, CA 95120
(408) 927-1110


Ann Chervenak <annc@ISI.EDU>@mailman.isi.edu on 09/20/2002 02:20:40 PM

Sent by:    ogsa-data-admin@mailman.isi.edu


To:    Vijayshankar Raman/Almaden/IBM@IBMUS, Inderpal Narang
       <narang@almaden.ibm.com>, ogsa-data@mailman.isi.edu
cc:
Subject:    [Ogsa-data] new version of architecture picture




Hi,

In preparation for the architecture conversation that Shankar, Inderpal
and I plan to have this afternoon, I have been reviewing the "Anatomy
of the Grid" paper and thinking more about what our common architecture
vision might be.

I wanted to pass along a revised architecture picture to the list for
comment.

As Jay requested last week, this architecture picture is higher-level
than the one I presented during our meetings and has fewer
components (although still perhaps too many).

Also as we discussed last week, the picture includes federation services
as a basic collective service type.

This architecture picture is based very directly on the layered
architecture
presented in the "Anatomy" paper and includes the same Fabric/Connectivity/
Resource/Collective layers.

One question for the group is whether we can agree to use the "Anatomy"
layered architecture, which has been widely accepted throughout the
grid community, as the starting point for our joint architecture view.

Please let me know what you think.

Ann