User-Defined Reductions and Scans

User-defined reductions and scans are supported via class definitions where the class implements a structural interface. The definition of this structural interface is forthcoming as it is not yet stable.


While the user-defined reduction class interface is not yet described here in the language specification, the currently implemented interface is described in the Reduce Intents Technote.

Additionally, the following paper describes an early version of the interface:

S. J. Deitz, D. Callahan, B. L. Chamberlain, and L. Snyder. Global-view abstractions for user-defined reductions and scans. In Proceedings of the Eleventh ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming, 2006.