A thermal balance oriented task mapping for CMPs

CMP (Chip Multi Processors) has been concerned and applied in more and more fields. With the technical progress in semiconductor manufacturing, the focus/research on on-chip power density and heat generation of the chips are increasing. The heat distribution of the chip heavily affects its reliability. In this article a heat-balancing task mapping algorithm is proposed to optimize the heat distribution and ensure the reliability of CMP. First, the thermal distribution of CMP is analyzed by what. Then, based on above analysis, a cost function based on usage and location of on-chip processors is proposed. Finally, a mapping algorithm based on above cost function is .developed to assign threads to cores while running applications with the min-cost principle dynamically. The simulation results revel that the heat-balancing algorithm proposed effectively optimizes heat distribution and ensures computational performance either.