Name
Title | ||
|---|---|---|
MPAM: Reliable, Low-Latency, Near-Threshold-Voltage Multi-Voltage/Frequency-Domain Network-on-Chip with Metastability Risk Prediction and Mitigation |
Abstract | ||
|---|---|---|
Emerging applications like a drone and an autonomous vehicle require system-on-a-chips (SoCs) with high reliability, e.g., the mean-time-between-failure (MTBF) needs to be over tens of thousands of hours [1]. Meanwhile, as these applications require increasingly higher performance and energy efficiency, a multi-core architecture is often desirable. Here, each core operates in an independent voltage/frequency (V/F) domain, ideally from the near-threshold voltage (NTV) to super-threshold, while communicating with one another via a network-on-chip (NoC) [2]. However, this makes it challenging to ensure robustness in clock domain crossing against metastability. Metastability becomes even more critical to NTV circuits since metastability resolution time constant
<tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$T$</tex>
grows super-linearly with voltage scaling [3]. Conventionally, an NoC uses multi-stage (4 stages in [4]) synchronizers to improve MTBF, but they increase latency and cannot completely eliminate metastability. Recently, [5] proposed a novel NTV flip-flop, which has a lower probability of having metastability. Another recent work [6] proposed to detect the necessary condition of metastability and mitigate it by modulating the RX clock and also requesting retransmission to guarantee data correctness. However, as it detects a necessary condition, not actual metastability, it tends to overly request retransmission, hurting latency, throughput, and energy efficiency. |
Year | DOI | Venue |
|---|---|---|
2022 | 10.1109/CICC53496.2022.9772849 | 2022 IEEE Custom Integrated Circuits Conference (CICC) |
Keywords | DocType | ISSN |
low-latency,metastability risk prediction,system-on-a-chips,mean-time-between-failure,MTBF,energy efficiency,multicore architecture,near-threshold voltage,super-threshold,network-on-chip,clock domain,metastability resolution time,voltage scaling,actual metastability | Conference | 0886-5930 |
ISBN | Citations | PageRank |
978-1-7281-8280-3 | 0 | 0.34 |
References | Authors | |
0 | 7 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Chuxiong Lin | 1 | 0 | 1.35 |
| Weifeng He | 2 | 61 | 14.69 |
| Yannan Sun | 3 | 0 | 0.34 |
| Lin Shao | 4 | 0 | 0.34 |
| Bo Zhang | 5 | 4 | 19.80 |
| Jun Yang | 6 | 147 | 36.54 |
| Mingoo Seok | 7 | 601 | 80.71 |