000145907 001__ 145907
000145907 005__ 20190316234717.0
000145907 020__ $$a978-1-4244-5309-2
000145907 02470 $$2ISI$$a000287216003136
000145907 037__ $$aCONF
000145907 245__ $$aMulticore thermal management using approximate explicit Model Predictive Control
000145907 269__ $$a2010
000145907 260__ $$bIEEE Press$$c2010
000145907 336__ $$aConference Papers
000145907 490__ $$aIEEE International Symposium on Circuits and Systems
000145907 520__ $$aMeeting temperature constraints and reducing the hot-spots are critical for achieving reliable and efficient operation of complex multi-core systems. In this paper we aim at achieving an online smooth thermal control action that minimizes the performance loss as well as the computational and hardware overhead of embedding a thermal management system inside the MPSoC. The optimization problem considers the thermal profile of the system, its evolution over time and current time-varying workload requirements. We formulate this problem as a discrete-time control problem using model predictive control. The solution is computed off-line and partially on-line using an explicit approximate algorithm. This proposed method, compared with the optimum approach provides a significant reduction in hardware requirements and computational cost at the expense of a small loss in accuracy. We perform experiments on a model of the 8-core Niagara-1 multicore architecture using benchmarks ranging from web-accessing to playing multimedia. Results show that the proposed method provides comparable performance( loss up to 2.7%) versus the optimum solution with a reduction up to 72.5x in the the computational complexity.
000145907 6531_ $$amulticore
000145907 6531_ $$athermal management
000145907 6531_ $$amodel predictive control
000145907 6531_ $$aembedded systems
000145907 700__ $$0242412$$g178989$$aZanini, Francesco
000145907 700__ $$aJones, Colin N.
000145907 700__ $$0240268$$g169199$$aAtienza Alonso, David
000145907 700__ $$0240269$$g167918$$aDe Micheli, Giovanni
000145907 7112_ $$dMay 30-June 2, 2010$$cParis, France$$aIEEE International Symposium on Circuits and Systems (ISCAS)
000145907 773__ $$j1$$tProceedings of the of IEEE International Symposium on Circuits and Systems (ISCAS)$$k1$$q3321-3324
000145907 8564_ $$uhttps://infoscience.epfl.ch/record/145907/files/ISCAS2010-08463294.pdf$$zn/a$$s139303$$yn/a
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000145907 917Z8 $$x169199
000145907 917Z8 $$x169199
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000145907 917Z8 $$x112915
000145907 937__ $$aEPFL-CONF-145907
000145907 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000145907 980__ $$aCONF