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Publications
| Citation key | Thomas2012:mempred |
|---|---|
| Author | Gervin Thomas and Karthik Chandrasekar and Benny Akesson and Ben Juurlink and Kees Goossens |
| Title of Book | Digital System Design (DSD), 2012 15th Euromicro Conference on |
| Pages | 882 -889 |
| Year | 2012 |
| DOI | 10.1109/DSD.2012.11 |
| Month | sept. |
| Note | Print ISBN: 978-1-4673-2498-4 |
| Abstract | Reducing power/energy consumption is an important goal for all computer systems, from servers to battery-driven hand-held devices. To achieve this goal, the energy consumption of all system components needs to be reduced. One of the most power-hungry components is the off-chip DRAM, even when it is idle. DRAMs support different power-saving modes, such as self-refresh and power-down, but employing them every time the DRAM is idle, reduces performance due to their power-up latencies. The self-refresh mode offers large power savings, but incurs a long power-up latency. The power-down mode, on the other hand, has a shorter power-up latency, but provides lower power savings. In this paper, we propose and evaluate a novel power-saving policy that combines the best of both power-saving modes in order to achieve significant power reductions with a marginal performance penalty. To accomplish this, we use a history-based predictor to forecast the duration of an idle period and then either employ self-refresh, or power-down, or a combination of both power saving modes. Significant refinements are made to the predictor to maximize the energy savings and minimize the performance penalty. The presented policy is evaluated using several applications from the multimedia domain and the experimental results show that it reduces the total DRAM energy consumption between 68.8% and 79.9% at a negligible performance penalty between 0.3% and 2.2%. |
Teaching
| Technische Grundlagen der Informatik 2 (Org + UE) | SS 2013 |
| TechGI 2 TI: Digitale Systeme | SS 2013 |
| AES Bachelor Projekt (PJ) | WS 2012/2013 |
| Technische Grundlagen der Informatik 2 (Org + UE) | SS 2012 |
| AES Bachelor Projekt (PJ) | WS 2011/2012 |
| Technische Grundlagen der Informatik 2 (Org + UE) | SS 2011 |
| Multicore Architectures (UE) | WS 2010/2011 |
| Technische Grundlagen der Informatik 2 (Org + UE + PR) | SS 2010 |
| Technische Grundlagen der Informatik 2 (Org + UE) | SS 2009 |
| Rechnersysteme (UE) | WS 2008/2009 |
| Technische Grundlagen der Informatik 2 (Org + UE) | SS 2008 |
| Hardware-Praktikum für Technische Informatiker[Diplom](PR) | WS 2007/2008 |
July 23th, 2014: Gervin Thomas successfully completed his PhD defence.
- © aes
Dipl.-Ing. Gervin Thomas successfully completed his PhD defence on Wednesday July 23rd, 2014. His thesis title was: "A Generic Implementation of a Quantified Predictor Applied to a DRAM Power-Saving Policy”. Gervin is the first to obtain his PhD in the AES group after Prof. Juurlink became the chair of the group in January 2010. Congratulation Dr. Thomas for your success and we wish you the best in your future.
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