Temporal vectorization: a compiler approach to automatic multi-pumping
Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
The multi-pumping resource sharing technique can overcome the limitations commonly found in single-clocked FPGA designs by allowing hardware components to operate at a higher clock frequency than the surrounding system. However, this optimization cannot be expressed in high levels of abstraction, such as HLS, requiring the use of hand-optimized RTL. In this paper we show how to leverage multiple clock domains for computational subdomains on reconfigurable devices through data movement analysis on high-level programs.We offer a novel view on multi-pumping as a compiler optimization - a superclass of traditional vectorization. As multiple data elements are fed and consumed, the computations are packed temporally rather than spatially. The optimization is applied automatically using an intermediate representation that maps high-level code to HLS. Internally, the optimization injects modules into the generated designs, incorporating RTL for finegrained control over the clock domains. We obtain a reduction of resource consumption by up to 50% on critical components and 23% on average. For scalable designs, this can enable further parallelism, increasing overall performance.
Original language | English |
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Title of host publication | Proceedings of the 41st IEEE/ACM International Conference on Computer-Aided Design, ICCAD 2022 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Publication date | 2022 |
Pages | 1-9 |
Article number | 85 |
ISBN (Electronic) | 9781450392174 |
DOIs | |
Publication status | Published - 2022 |
Event | 41st IEEE/ACM International Conference on Computer-Aided Design, ICCAD 2022 - San Diego, United States Duration: 30 Oct 2022 → 4 Nov 2022 |
Conference
Conference | 41st IEEE/ACM International Conference on Computer-Aided Design, ICCAD 2022 |
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Land | United States |
By | San Diego |
Periode | 30/10/2022 → 04/11/2022 |
Sponsor | ACM Special Interest Group on Design Automation (SIGDA), et al., IEEE Circuits and Systems Society (CASS), IEEE Council on Electronic Design Automation (CEDA), IEEE Electron Devices Society (EDS), International Conference on Computer-Aided Design (ICCAD) |
Bibliographical note
Publisher Copyright:
© 2022 Association for Computing Machinery.
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