Feldspar

Functional Embedded Language for Digital Signal Processing and Parallelism

Participants

Feldspar is a joint research project of

Ericsson,
Chalmers University of Technology (Göteborg, Sweden),
Eötvös Loránd University (Budapest, Hungary).

Downloads

This is an open source project, see the download page for details.

Publications

2011.05.25. Guest talk at Friedrich Schiller University, Jena, Germany.
Slides of the talk and files of the demo are available.
2010.09.1 – 3. IFL 2010: the 22nd Symposium on Implementation and Application of Functional Languages, Alphen aan den Rijn, the Netherlands.
The slides of the talk and the paper are available.
2010.07.26 – 28. MEMOCODE 2010: International Conference on Formal Methods and Models for Codesign, Grenoble, France.
The paper is available.
2010.04.25. ODES-8: Workshop on Optimizations for DSP and Embedded Systems, Toronto, Canada.
Slides of the talk and the paper are available. Examples and generated C code used for the performance tests described in the paper are here.
2010.01.29. 8th International Conference on Applied Informatics, Eger, Hungary.
Slides of the talk, the poster, and the paper are available. The poster and its presentation won the "Best poster talk" award.
2009.11.26. Ericsson Software Research Day, Stockholm, Sweden.
Slides of the talk are available.

Goals

The goal of the project is to define a high-level language that allows description of signal processing algorithms with the following characteristics:

Allows compact and easy-to-understand definition of algorithms.
Allows execution and functional verification.
Hardware platform independent.
Allows efficient code generation for various targets (at least DSPs and FPGAs).
Enables future extensions for code generation for multi-core targets for computing-intensive algorithms.
Supports code generation for multiple streams.
Supports specification of external interfaces as C functions, and supports inclusion of existing components.
Supports merging, re-grouping, splitting of algorithms and groups of algorithms.
Supports expression of control information handling.

We have developed a prototype compiler that generates ISO C99 code for programs written in this high-level language, and we plan to target real digital signal processing hardware in the future.

Contacts

András Vajda	Prof. Mary Sheeran	Prof. Zoltán Horváth
Strategic Software Researcher Group Function Technology Oy L M Ericsson Ab Hirsalantie 11, 02420 Jorvas, Finland www.ericsson.com Office: +358 9 299 3046 Mobile: +358 40 062 8146 andras (dot) vajda (at) ericsson (dot) com	Computer Science and Engineering Dept. (D&IT) Chalmers University of Technology SE-412 96 Göteborg, Sweeden Visiting address: D&IT building, room 5466 Phone: +46 31 772 10 13 ms (at) chalmers (dot) se	Dept. of Programming Languages and Compilers Faculty of Informatics Eötvös Loránd University Pázmány P. stny. 1/C, H-1117 Budapest, Hungary Phone : +36 1 3812189 Fax: +36 1 3812185 hz (at) inf (dot) elte (dot) hu

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