Hi Arnie, Size is definitely misleading concept. There are about 4 computers in the top 500 list that have more cores that available in EGEE. Laurence Arnie Miles wrote:
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I've never heard of the number of services being part of a definition of production. One service can be production, provided it meets the quality of service demands of the enterprise.
Perhaps the reason size matters in grid is because no single item on the grid can be depended upon, but after a certain size there are enough examples of each item that the grid itself can boast "production quality". Hence, a user's workstation "on the grid" may not be of production quality, but 100,000 such workstations can produce "production quality" level of service.
Arnie
David Wallom wrote:
I have to firmly disagree. Production should refer to the quality and number of services that are available rather than its specific size. The scaling of an infrastructure has nothing at the moment to do with whether its resources are interoperable. Your separation of large is a completely arbitrary one. A production grid should be able to display policies and procedures for the management services and SLDs for the services that it provides users.
Are you suggesting for example that a single national grid is not a production service? I can assure you for example that GLOW and other components of OSG as well as the UK NGS etc get an awful lot of work done with many many publications in high value refereed journals etc. as a direct result. Maybe we could use publication impact of the work done as a measure instead, it would be as arbitrary as 'real work'?
David
On 17/03/2009 14:50, "Moreno Marzolla" <moreno.marzolla@pd.infn.it> wrote:
David Wallom wrote:
Hi Lawrence,
[...]
Can I suggest that we just set performance, policy and procedure targets and go from there. I.e. You grid will have legally compliant accounting for utilisation by a number of users that are identified using a strong authentication and authorisation mechanism, across a set of physically separate resources that may or may not be legally owned by more than one legal entity. The services that these offer can be many and varied but all should operate to a defined quality of service definition.
Hi all,
I think that this definition is a bit generic, in the sense that it surely defines a "Grid", but I don't see how it addresses the term "Production" (which I agree is a term a bit elusive to quantify/qualify appropriately). In my mind I always associated "production" grids to those large-scale infrastructures (how much large?) that are used to get "real job" done (what does "real job" mean?). This is what I thought was the line dividing "production" grids from "non-production" ones.
Moreno.
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- -- Arnie Miles Grid Middleware Architect Adjunct Assistant Professor of Computer Science Georgetown University 3300 Whitehaven Street NW Washington, DC 20007 202.687.9379 http://thebes.arc.georgetown.edu
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