Presentation 2017-09-26
A case study of High-level Synthesis Using Higher-order Function on Functional Language
Takuya Teraoka, Morihiro Kuga, Motoki Amagasaki, Masahiro Iida, Toshinori Sueyoshi,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) The growing capabilities of silicon technology and the increasing complexity of applications in recent decades have forced design methodologies and tools to raise the level of design abstraction beyond register transfer level. The most popular approach has been to develop tools that use procedual languages in a C-like language. However, coarse-grain parallelism from a C program cannot be easily extracted, hence some tools use explicitly parallel languages to design hardware. But, all these tools rely on the programmer to correctly parallelize the application and perform optimizations which often needs hardware design knowledge. In this work, we propose a high-level synthesis tool for FPGAs using DSL embedded in Haskell as the design language and search program for degree of parallelism. Haskell is a pure functional language and better fit for hardware design. We implemented higher-order functions such as map, zipWith and reduce in our DSL, which allows us to automatically extract parallelism in the design. The evaluation results show that our proposed implementation achieves 3.00 and 4.96 times speed-up in two benchmarks, array addition and summation of array, respectively, relative to a C-like language design. Moreover, we also confirme that it is consistent with the result of search program for degree of parallelism.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) High-level Synthesis / Functional Language / FPGA
Paper # RECONF2017-35
Date of Issue 2017-09-18 (RECONF)

Conference Information
Committee RECONF
Conference Date 2017/9/25(2days)
Place (in Japanese) (See Japanese page)
Place (in English) DWANGO Co., Ltd.
Topics (in Japanese) (See Japanese page)
Topics (in English) Reconfigurable Systems, etc.
Chair Masato Motomura(Hokkaido Univ.)
Vice Chair Yuichiro Shibata(Nagasaki Univ.) / Kentaro Sano(Tohoku Univ.)
Secretary Yuichiro Shibata(Hiroshima City Univ.) / Kentaro Sano(e-trees.Japan)
Assistant Yuuki Kobayashi(NEC) / Hiroki Nakahara(Tokyo Inst. of Tech.)

Paper Information
Registration To Technical Committee on Reconfigurable Systems
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A case study of High-level Synthesis Using Higher-order Function on Functional Language
Sub Title (in English)
Keyword(1) High-level Synthesis
Keyword(2) Functional Language
Keyword(3) FPGA
1st Author's Name Takuya Teraoka
1st Author's Affiliation Kumamoto University(Kumamoto Univ.)
2nd Author's Name Morihiro Kuga
2nd Author's Affiliation Kumamoto University(Kumamoto Univ.)
3rd Author's Name Motoki Amagasaki
3rd Author's Affiliation Kumamoto University(Kumamoto Univ.)
4th Author's Name Masahiro Iida
4th Author's Affiliation Kumamoto University(Kumamoto Univ.)
5th Author's Name Toshinori Sueyoshi
5th Author's Affiliation Kumamoto University(Kumamoto Univ.)
Date 2017-09-26
Paper # RECONF2017-35
Volume (vol) vol.117
Number (no) RECONF-221
Page pp.pp.75-80(RECONF),
#Pages 6
Date of Issue 2017-09-18 (RECONF)