perfSONAR User Q&A and Other Discussion

[shiraz memon <>]

Hi Folks,

I am investigating LS currently and trying to find the potential feasibility whether it could be used to discover the Grid Services such as Job Management, Storage Management, Computing etc... on "a large scale" deployment. The aforementioned services are exposed as Web or WS-RF compliant services, thus metadata defined would be in XML format. 

Here are some of the high level factors, that I would use to asses the viability of LS within Grids

1. enable the service providers (any, but some are mentioned above) to specify the metadata easily, that can be pulled/pushed from/into LS

      ** How easy it would be to extend the LS, so as to support the info. publishing services, which are not a part of PerfSONAR's network?

2. acquaintance of new services to LS

      ** Can the LS simply allows the foreign services to publish their metadata

3. querying the stored information at hLS or gLS using standardised language, such as XPath or XQuery

      ** I think this is there, but how would the LS handles the large amount of query results? 

      ** Does it provide the iterating capabilities, if the large set of xml documents are returned from an XMLDB?

4. to publish and retrieve the information in GLUE2 format

      ** INFO: GLUE2 is a standard from OGF, the model encapsulates the Grid entities. the Glue-WG also have released the renderings in SQL, XML and LDAP format.

      ** How challenging and realistic is to add support for GLUE2 model?

5. Is there any integration or extension available that can be endorsed out-of-the box?

Thanks in advance,

Shiraz