Elysium Technologies Private Limited
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A b s t r a c t
Very Large Scale Integration 2010 - 2011
01 Novel Vth Hopping Techniques for Aggressive Runtime Leakage Control
The continuous increase of leakage power consumption in deep sub-micro technologies necessitates more aggressive
leakage control. Runtime leakage control (RTLC) is effective, since runtime circuits generally have significant amount
of idleness. However, current RTLC techniques are only used when circuits have long idleness, rendering the
techniques less profitable. The reason is due to the large energy and delay overhead when performing RTLC mode
transition. We propose two novel techniques, workload-adaptive Vth hopping (WAVTH) and hierarchical Vth hopping
(HIVTH), to tackle the overhead problems and enable aggressive runtime leakage control. Experimental results show
19.2% average improvement on leakage saving with WAVTH and HIVTH over basic Vth hopping. The optimum design
points of these two techniques are determined through accurate modeling
02 Leakage-Aware Energy Minimization using Dynamic Voltage Scaling and Cache Reconfiguration in Real-
Time Systems
System optimization techniques are widely used to improve energy efficiency as well as overall performance. Dynamic
voltage scaling (DVS) is acknowledged to be successful in reducing processor energy consumption. Due to the
increasing significance of the memory subsystem’s energy consumption, dynamic cache reconfiguration (DCR)
techniques are recently proposed at the aim of saving cache subsystem’s energy consumption. As the manufacturing
technology scales into the order of nanometers, leakage curre