Forgive me for pushing my logic to the extreme; I do realize that ARC/gLite/Naregi are similar enough that they could be congealed to constitute a "grid island" with some degree of effort. 

 

My point is that the working group is still faced with a crisis of identity: it is not about "production grid interoperability", but rather about "A-type interoperability", "B-type interoperability", "C-type interoperability" where {A, B, C, etc.} is the set of credentialing schemes that, depending on the effort we are willing to invest, may number as many as there are different middleware implementations (no effort), or as few as one integrated scheme.

 

The operative phrase being "the amount of effort we are willing to invest".  Perhaps we should survey that.

 

-Duane