TY - GEN
T1 - EnergySmart
T2 - 19th IEEE International Symposium on High Performance Computer Architecture, HPCA 2013
AU - Karpuzcu, Ulya R.
AU - Sinkar, Abhishek
AU - Kim, Nam Sung
AU - Torrellas, Josep
PY - 2013
Y1 - 2013
N2 - While Near-Threshold Voltage Computing (NTC) is a promising approach to push back the manycore power wall, it suffers from a high sensitivity to parameter variations. One possible way to cope with variations is to use multiple on-chip voltage (Vdd) domains. However, this paper finds that such an approach is energy inefficient. Consequently, for NTC, we propose a manycore organization that has a single Vdd domain and relies on multiple frequency domains to tackle variation. We call it EnergySmart. For this approach to be competitive, it has to be paired with effective core assignment strategies and also support fine-grain (i.e., short-interval) DVFS. This paper shows that, at NTC, a simple chip with a single Vdd domain can deliver a higher performance per watt than one with multiple Vdd domains.
AB - While Near-Threshold Voltage Computing (NTC) is a promising approach to push back the manycore power wall, it suffers from a high sensitivity to parameter variations. One possible way to cope with variations is to use multiple on-chip voltage (Vdd) domains. However, this paper finds that such an approach is energy inefficient. Consequently, for NTC, we propose a manycore organization that has a single Vdd domain and relies on multiple frequency domains to tackle variation. We call it EnergySmart. For this approach to be competitive, it has to be paired with effective core assignment strategies and also support fine-grain (i.e., short-interval) DVFS. This paper shows that, at NTC, a simple chip with a single Vdd domain can deliver a higher performance per watt than one with multiple Vdd domains.
UR - http://www.scopus.com/inward/record.url?scp=84880303483&partnerID=8YFLogxK
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U2 - 10.1109/HPCA.2013.6522348
DO - 10.1109/HPCA.2013.6522348
M3 - Conference contribution
AN - SCOPUS:84880303483
SN - 9781467355858
T3 - Proceedings - International Symposium on High-Performance Computer Architecture
SP - 542
EP - 553
BT - 19th IEEE International Symposium on High Performance Computer Architecture, HPCA 2013
Y2 - 23 February 2013 through 27 February 2013
ER -