Quasi-Static Scheduling for Deterministic Timed Concurrent Models on Multi-Core Hardware
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
To design performant, expressive, and reliable cyber-physical systems (CPSs), researchers extensively perform quasi-static scheduling for concurrent models of computation (MoCs) on multi-core hardware. However, these quasi-static scheduling approaches are developed independently for their corresponding MoCs, despite commonality in the approaches. To help generalize the use of quasi-static scheduling to new and emerging MoCs, this article proposes a unified approach for a class of deterministic timed concurrent models (DTCMs), including prominent models such as synchronous dataflow (SDF), Boolean-controlled dataflow (BDF), scenario-aware dataflow (SADF), and Logical Execution Time (LET). In contrast to scheduling techniques tailored exclusively to specific MoCs, our unified approach leverages a common intermediate formalism called state space finite automata (SSFA), bridging the gap between high-level MoCs and executable schedules. Once identified as DTCMs, new MoCs can directly adopt SSFA-based scheduling, significantly easing adoption. We show that quasi-static schedules facilitated by SSFA are provably free from timing anomalies and enable straightforward worst-case makespan analysis. We demonstrate the approach using the reactor model—an emerging discrete-event MoC—programmed using the Lingua Franca (LF) language. Experiments show that quasi-statically scheduled LF programs exhibit lower runtime overhead compared to the dynamically scheduled LF programs, and that the analyzable worst-case makespans enable compile-time deadline checking.
Details
| Original language | English |
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| Article number | 150 |
| Journal | ACM transactions on embedded computing systems |
| Volume | 24 |
| Issue number | 5 |
| Publication status | Published - 1 Oct 2025 |
| Peer-reviewed | Yes |
External IDs
| ORCID | /0000-0002-5007-445X/work/206632719 |
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Keywords
ASJC Scopus subject areas
Keywords
- Concurrency, DAG Scheduling, Predictability, Quasi-Static Scheduling