Temperature Aware Task Scheduling in MPSoCs

Ayse Kivilcim Coskun, Tajana Simunic Rosing, Keith Whisnant
2007 2007 Design, Automation & Test in Europe Conference & Exhibition  
In deep submicron circuits, elevation in temperatures has brought new challenges in reliability, timing, performance, cooling costs and leakage power. Conventional thermal management techniques sacrifice performance to control the thermal behavior by slowing down or turning off the processors when a critical temperature threshold is exceeded. Moreover, studies have shown that in addition to high temperatures, temporal and spatial variations in temperature impact system reliability. In this
more » ... we explore the benefits of thermally aware task scheduling for multiprocessor systems-on-a-chip (MPSoC). We design and evaluate OS-level dynamic scheduling policies with negligible performance overhead. We show that, using simple to implement policies that make decisions based on temperature measurements, better temporal and spatial thermal profiles can be achieved in comparison to stateof-art schedulers. We also enhance reactive strategies such as dynamic thread migration with our scheduling policies. This way, hot spots and temperature variations are decreased, and the performance cost is significantly reduced.
doi:10.1109/date.2007.364540 fatcat:xc4rt3xhrfb3jpl7wiywawlpcu