Task Migration Policy for Thermal-Aware Dynamic Performance Optimization in Many-Core Systems

A Vlsi Design Perspective on Non-centralized Approach to Thermal Aware Task Migration in Many-core Systems

In deep sub-micrometer era, thermal hot spots, and large temperature gradients significantly impact system reliability, performance, cost, and leakage power. The increasing chip complexity and power density elevate peak temperatures of chip and unbalance the thermal gradients. Raised peak temperatures reduce lifetime of the chip, deteriorate its performance, affect the reliability and increase ...

Thermal-aware dynamic voltage frequency scaling for many-core processors under process variations

Process variations yield the asymmetry on core performance in many-core processors. Adaptive voltage scaling can hide the variations, but that results in the different thermal characteristics of cores. By using the thermal characteristics, the efficiency of energy optimization and temperature management can be improved. Experiments showed that the proposed dynamic voltage frequency scaling cons...

FAMe-TM: Formal analysis methodology for task migration algorithms in Many-Core systems

Task-Aware Optimization of Dynamic Fractional Permissions

Boyland’s original work on fractional permissions introduced a mechanism to statically reason about the correct use of shared memory in concurrent programs. Permissions are linear capabilities that can be passed from one task to another. By splitting a permission into fractions, a task can grant multiple other tasks concurrent read access. Because writing data requires the full permission– and ...

A Scalability-Aware Kernel Executive for Many-Core Operating Systems

Number, variety, and organization of the on-chip processing elements of many-core processors demand a radical rethink in operating systems design. One may come from a multitude of allocatable units that bestows every execution thread its own core: single-threaded cores will be usual, multi-threaded cores will be unusual. The paper presents a scalability-aware kernel executive, Sake, that is cur...