Chapel (programming language)
Partitioned global address space
|Designed by||David Callahan, Hans Zima, Brad Chamberlain, John Plevyak|
|Preview release||1.7.0 (April 18, 2013)|
|Influenced by||HPF, ZPL|
Chapel, the Cascade High Productivity Language, is a parallel programming language developed by Cray. It is being developed as part of the Cray Cascade project, a participant in DARPA's High Productivity Computing Systems (HPCS) program, which had the goal of increasing supercomputer productivity by the year 2010. Chapel aims to improve the programmability of parallel computers in general and the Cascade system in particular, by providing a higher level of expression than current programming languages do and by improving the separation between algorithmic expression and data structure implementation details.
Chapel supports a multithreaded parallel programming model at a high level by supporting abstractions for data parallelism, task parallelism, and nested parallelism. It enables optimizations for the locality of data and computation in the program via abstractions for data distribution and data-driven placement of subcomputations. It allows for code reuse and generality through object-oriented concepts and generic programming features. For instance, Chapel allows for the declaration of locales.
While Chapel borrows concepts from many preceding languages, its parallel concepts are most closely based on ideas from High Performance Fortran (HPF), ZPL, and the Cray MTA's extensions to Fortran and C.
- Lightfoot, David E. (2006). Modular programming languages: 7th Joint Modular Languages Conference. p. 20. ISBN 3-540-40927-0.
- Bongen Gu; Wikuan Yu; Yoonsik Kwak (June 28–30, 2011). "Communication and Computation Overlap through Task Synchronization in Multi-locale Chapel Environment". In James J. Park, Laurence T. Yang and Changhoon Lee. Future Information Technology, Part I: 6th International Conference. Loutraki, Greece: Springer-Verlag. pp. 285–292. ISBN 978-3-642-22332-7. Retrieved August 17, 2011.
- "Download Chapel". Chapel.Cray.com. Retrieved December 13, 2012.
- Chamberlain, Bradford L. (2011). "Chapel (Cray Inc. HPCS Language)". In Padua, David. Encyclopedia of Parallel Computing, Volume 4. Springer. ISBN 9780387097657.
- "A Brief Overview of Chapel" (PDF). Bradford L. Chamberlain, Cray Inc. Retrieved 22 April 2013.
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