Abstract
Hybrid coherence protocols can provide the scalability of directory protocols and low latency sharing miss handling in snooping protocols simultaneously. Unfortunately, how to adapt the hybrid protocols at runtime is not well studied. This paper proposes Thread ProgrEss Aware Coherence Adaption (TEACA) which utilizes the thread progress information as the hints to adapt hybrid coherence protocols. Specifically, TEACA fuses the memory system statistics to estimate the progress of threads. Based on the estimated thread progress information, TEACA dynamically categorizes threads into leader threads and laggard threads. The thread categorization decisions are then leveraged for efficient coherence adaption in hybrid coherence protocols. A case study on a recently proposed hybrid protocol (PATCH [29]) shows that, with the hints from TEACA, the enhanced hybrid protocol outperforms its baseline in both application execution time and energy dissipation. © 2012 IEEE.
| Original language | English |
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| Title of host publication | 2012 IEEE 10th Symposium on Embedded Systems for Real-Time Multimedia, ESTIMedia 2012 |
| Pages | 19-26 |
| DOIs | |
| Publication status | Published - 2012 |
| Event | 2012 IEEE 10th Symposium on Embedded Systems for Real-Time Multimedia, ESTIMedia 2012 - Tampere, Finland Duration: 11 Oct 2012 → 12 Oct 2012 |
Conference
| Conference | 2012 IEEE 10th Symposium on Embedded Systems for Real-Time Multimedia, ESTIMedia 2012 |
|---|---|
| Country/Territory | Finland |
| City | Tampere |
| Period | 11/10/12 → 12/10/12 |
Research Keywords
- Cache Coherence
- Energy Efficient
- Hybrid Protocol
- Parallel Application