Peak Temperature Minimization for Hard Real-Time Systems Using DVS and DPM

2019 ◽  
Vol 28 (06) ◽  
pp. 1950102
Author(s):  
Mingchuan Zhou ◽  
Long Cheng ◽  
Manuel Dell’Antonio ◽  
Xiebing Wang ◽  
Zhenshan Bing ◽  
...  

With the increasing power densities, managing the on-chip temperature has become an important design challenge, especially for hard real-time systems. This paper addresses the problem of minimizing the peak temperature under hard real-time constraints using a combination of dynamic voltage scaling and dynamic power management. We derive a closed-form formulation for the peak temperature and provide a genetic-algorithm-based approach to solve the problem. Our approach is evaluated with both simulations and real measurements with an Intel i5 processor. The evaluation results demonstrate the effectiveness of the proposed approach compared to related works in the literature.

2018 ◽  
Vol 27 (13) ◽  
pp. 1850208 ◽  
Author(s):  
Long Cheng ◽  
Kai Huang ◽  
Gang Chen ◽  
Biao Hu ◽  
Zhuangyi Jiang ◽  
...  

Due to growing power density, on-chip temperature increases rapidly, which has hampered the reliability and performance of modern real-time systems. This paper studies how to minimize the peak temperature of real-time systems under hard real-time constraints with periodic thermal management. A closed-form representation of the peak temperature for such a periodic scheme is derived to tackle this problem. Based on this closed form and the arrival curve model, one offline approach and one online approach are proposed to minimize the peak temperature for a given event stream. The offline one does thermal optimization in design phase and introduces negligible runtime overhead. The online one computes dynamic power-control schemes which are adaptive to actual event arrivals and execution states. We conduct experiments on a real single-core processor and compare our approaches to two existing works. The temperature results measured from a physical thermal sensor demonstrate that the achieved maximal and average temperature reductions are 5[Formula: see text]K and 2.6[Formula: see text]K, respectively.


2011 ◽  
Vol 47 (2) ◽  
pp. 163-193 ◽  
Author(s):  
Kai Huang ◽  
Luca Santinelli ◽  
Jian-Jia Chen ◽  
Lothar Thiele ◽  
Giorgio C. Buttazzo

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