Encyclopedia of Parallel Computing

2011 Edition
| Editors: David Padua

Chapel (Cray Inc. HPCS Language)

  • Bradford L. Chamberlain
Reference work entry
DOI: https://doi.org/10.1007/978-0-387-09766-4_54


Cascade high productivity language


Chapel is a parallel programming language that emerged from Cray Inc.’s participation in the High Productivity Computing Systems (HPCS) program sponsored by the Defense Advanced Research Projects Agency (DARPA). The name Chapel derives from the phrase “Cascade High Productivity Language,” where “Cascade” is the project name for the Cray HPCS effort. The HPCS program was launched with the goal of raising user productivity on large-scale parallel systems by a factor of ten. Chapel was designed to help with this challenge by vastly improving the programmability of parallel architectures while matching or beating the performance, portability, and robustness of previous parallel programming models.



The Chapel language got its start in 2002 during the first phase of Cray Inc.’s participation in the DARPA HPCS program. While exploring candidate system design concepts to improve user productivity, the technical leaders...

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This material is based upon work supported by the Defense Advanced Research Projects Agency under its Agreement No. HR0011-07-9-0001. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the Defense Advanced Research Projects Agency.


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Bradford L. Chamberlain
    • 1
  1. 1.Cray Inc.SeattleUSA