NDLI: Programming by sketching for bit-streaming programs

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Programming by sketching for bit-streaming programs

Content Provider	ACM Digital Library
Author	Bodík, Rastislav Ebcioğlu, Kemal Solar-Lezama, Armando Rabbah, Rodric
Abstract	This paper introduces the concept of programming with sketches, an approach for the rapid development of high-performance applications. This approach allows a programmer to write clean and portable reference code, and then obtain a high-quality implementation by simply sketching the outlines of the desired implementation. Subsequently, a compiler automatically fills in the missing details while also ensuring that a completed sketch is faithful to the input reference code. In this paper, we develop StreamBit as a sketching methodology for the important class of bit-streaming programs (e.g., coding and cryptography).A sketch is a partial specification of the implementation, and as such, it affords several benefits to programmer in terms of productivity and code robustness. First, a sketch is easier to write compared to a complete implementation. Second, sketching allows the programmer to focus on exploiting algorithmic properties rather than on orchestrating low-level details. Third, a sketch-aware compiler rejects "buggy" sketches, thus improving reliability while allowing the programmer to quickly evaluate sophisticated implementation ideas.We evaluated the productivity and performance benefits of our programming methodology in a user-study, where a group of novice StreamBit programmers competed with a group of experienced C programmers on implementing a cipher. We learned that, given the same time budget, the ciphers developed in StreamBit ran 2.5x faster than ciphers coded in C. We also produced implementations of DES and Serpent that were competitive with hand optimized implementations available in the public domain.
Starting Page	281
Ending Page	294
Page Count	14
File Format	PDF
ISBN	1595930566
DOI	10.1145/1065010.1065045
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2005-06-12
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Stream programming Streamit Domain specific compiler Domain specific language Synchronous dataflow Sketching
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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