Thermal management is one of the critical issues in 3D many-core processors design. 3D many-core floorplanning has so far focused on only the configuration of cores and memories across layers. However, 3D floorplanning should also take die stack ordering into account because the characteristics of dies may vary due to growing process variations. A new 3D floorplanning approach which covers die stack ordering is proposed. The evaluation shows that peak steady state temperature is reduced by about 2 K without any overhead in manufacturing process.
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