[Pgi-wg] Definition of a Production Grid : Multi-institutional Infrastructure for e-Science

[Oxana Smirnova]

Hi,

concerning NGIs: some of those I know are not substantially different 
from multi-institutional infrastructures, as they also use IGTF 
certificates and have all the other attributes except of the 
"international" one. NorduGrid CA case is very special: the CA itself is 
international and issues certificates to 5 different countries.

Some other national Grids are using different AAA frameworks (e.g. no 
IGTF, no VOMS) - but this is true not just for NGIs but for Campus Grids 
  as well.

The conclusion is, shall we separate national infrastructures from 
international? While presence of borders inside a Grid practically 
implies IGTF, the reverse is not true.

Cheers,
Oxana

Laurence Field пишет:
> Hi Etienne,
> 
> I think we have all agreed to drop the word "production" as it infers 
> something that is very subjective. What I hope that we are nowdoing is 
> identifying types of Grids.
> 
> My proposal is that one type of Grid has the IGTF as trust anchor. As 
> the I in IGTF standard for International this is also a key property.
> 
> You have highlighted two other types of Grids, 'Service Grids' and 
> 'Desktop Grids'.
> 
> So we have now identified 5 different types Campus Grid, NGIs, Service 
> Grids, Desktop Grids and Multi-institutional International 
> Infrastructures for e-Science. The fact that we are using different 
> words to describe these suggests that they are subtly different 
> otherwise we could just use the word Grid.
> 
> Laurence
> 
> 
> 
> 
> Etienne URBAH wrote:
>> Laurence and all,
>>
>> Concerning the definition of a Production Grid :
>>
>> Lot of thanks to Laurence for proposing the first definition, and for 
>> proposing 'Multi-institutional International Infrastructures for 
>> e-Science'.
>>
>> Following David WALLOM, I think that 'International' is too 
>> restrictive.  The key point is that a Production Grid spans 
>> institutional boundaries, which presents a whole load of policy and 
>> legal issues.
>>
>>
>> So I propose 'Multi-institutional Infrastructure for e-Science'.
>>
>>
>> Today, there can be Production Grids which do NOT use IGTF as trust 
>> anchor.
>> But for interoperability, they will have to migrate and use IGTF as 
>> trust anchor.
>>
>>
>> Inside the EDGeS project, we think that 'Production Grids' encompass 
>> both 'Service Grids' and 'Desktop Grids'.
>>
>> Shortly :
>>
>> -  A Service Grid (SG) is a managed grid of managed computing 
>> clusters, offering a guaranteed QoS (Quality of Service).  Typically, 
>> institutions with their managed clusters can join to SGs if they sign 
>> a certain SLA (Service Level Agreement) with the leadership of the 
>> SG.  Since participants to a SG are most often institutions, an SG is 
>> often called an 'Institutional Computing Grid'.
>>    Examples of such service grid infrastructures are EGEE, NorduGrid, 
>> OSG, DEISA, TeraGrid.
>>
>> -  A Desktop Grid (DG) is a loose opportunistic grid using idle 
>> resources.  Inside desktop grids, computing and storage resources are 
>> typically owned by individual volunteer owners and not by institutes 
>> (therefore it is often called volunteer computing).
>>    Even if each single desktop computer provides a very low QoS, a 
>> desktop grid of reasonable size can, as a whole, provide a defined QoS 
>> and sign a SLA.
>>    Examples of such desktop grid systems are BOINC, XtremWeb, OurGrid, 
>> Xgrid.
>>
>>
>> You can find a full description with drawings in chapter 5 
>> 'Technological context of the EDGeS project' of EDGeS deliverable 
>> DNA3.1 at 
>> http://www.edges-grid.eu:8080/c/document_library/get_file?p_l_id=11065&folderId=27671&name=DLFE-1042.pdf 
>>
>>
>> If you can NOT access this document, please let me now, I would then 
>> upload it to Gridforge.
>>
>>
>> Best regards.
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