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- W4210367193 abstract "In mobile systems, the problems of short battery life and increased temperature are exacerbated by wasted leakage power. Leakage power waste can be reduced by power-gating a core while it is stalled waiting for a resource. In this work, we propose and model memory access power gating (MAPG), a low-overhead technique to enable power gating of an active core when it stalls during a long memory access. We describe a programmable two-stage power gating switch design that can vary a core's wake-up delay while maintaining voltage noise limits and leakage power savings. We also model the processor power distribution network and the effect of memory access power gating on neighboring cores. Last, we apply our power gating technique to actual benchmarks, and examine energy savings and overheads from power gating stalled cores during long memory accesses. Our analyses show the potential for over 38% energy savings given “perfect” power gating on memory accesses; we achieve energy savings exceeding 20% for a practical, counter-based implementation." @default.
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- W4210367193 date "2012-03-01" @default.
- W4210367193 modified "2023-09-28" @default.
- W4210367193 title "MAPG: Memory access power gating" @default.
- W4210367193 doi "https://doi.org/10.1109/date.2012.6176651" @default.
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