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I think it's helpful to think of abstraction and implementation as directions from a point of reference. For example, C code can either be thought of as an implementation of something more abstract like a flow chart, or as an abstraction of assembly language. Abstraction moves in the direction of human understanding, and implementation moves in the direction of something actually happening.


I like that comment a lot @rbcarlso.


Can someone refresh my memory regarding the extra credit question in Assignment 1? What are differences between the pthread abstraction and the ISPC task abstraction?