Mail subject:  

OGF JSDL :  We need to define which incarnation (view) of the JSDL document we are trying to specify


Mail content :

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|  JSDL Documents  |
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Inside the OGF JSDL WG, we are trying to improve the specifications of the JSDL document.

But during the lifetime of a job, there are at least 3 incarnations (or views) of its JSDL document :


User JSDL Document
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-  This is the document provided by the user submitting the job.

-  The syntax of this document should permit abstraction and should provide flexibility.

-  In particular, it is advisable that this document permits :
   -- Static 'OR' operators for requirements as described at http://forge.ogf.org/sf/go/artf6522
   -- Conditional requirements as described at http://forge.ogf.org/sf/go/artf6521


Contextualized JSDL Document
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-  Out of the User JSDL Document, a matchmaker service produces this Contextualized JSDL Document and submits it to an 
LRMS (Batch System), which has to understand and execute it.

-  Therefore, the matchmaker service must solve the flexibility of the User JSDL Document against available resources, 
and the produded Contextualized JSDL Document must be deterministic.

-  In particular, the Contextualized JSDL Document :
   -- may still contain static 'OR' operators for requirements as described at http://forge.ogf.org/sf/go/artf6522
   -- should NOT contain conditional requirements as described at http://forge.ogf.org/sf/go/artf6521


Activity Document
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-  This Activity Document contains only timestamped history, logs, traces, ... about the job, for purposes of monitoring
, forensics, security audits, stats, data mining, ...

-  Therefore, this Activity Document should contain the User JSDL Document and the Contextualized JSDL Document, but 
only as embedded text.

-  It is advisable that this Activity Document indicates, for each user requirement, if the matchmaker service or the 
LRMS (Batch system) was able to really fulfill this user requirement.


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|  Target of the JSDL specifications  |
+-------------------------------------+
My personal opinion is :

-  The specifications of the Contextualized JSDL Document are already provided by each LRMS (Batch system), such as 
Condor, LSF, PBS, SGE, ...

-  The target of the JSDL specifications which we have to improve is the User JSDL Document.

-  We should also take into account the existence of the 2 other documents, and describe the impact of the JSDL 
specifications on them when relevant.


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|  Conclusion  |
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-  Please study carefully the definitions which I gave above for the 3 documents.  Do not hesitate to criticize and 
provide suggestions for improvements.

-  Please provide also your opinion on which document is the target of the JSDL specifications.