so, on one hand, something like amazons EC2 can be regarded as a kind of 'on-demand' super-computer. I can then collect this 'cloud' resource with a number of other 'normal' (super)computer resources and build a Grid. i.e. Grid contains Cloud.
but, the EC2 infrastructure itself can probably be regarded as somekind of Grid - as I'm sure it is pretty distributed and does a lot of Grid-like stuff. Cloud contains Grid. Staying with the Grid as I think I understand it today, is a Super-cloud a façade enveloping a Grid of distributed (super)computers ? My super-cloud wrapping all my distributed resources including EC2 ones. Cloud contains Grid contains Cloud. umm ...
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