Manycore architectures are the most recent shift in multiprocessor design. This new design paradigm replaces large monolithic processors by thousands of simple processing elements on a single chip. With such a large number of cores, it promises significant throughput advantage over traditional multicore. Also, it enables better localized control of power consumption and thermal gradients. This is achieved by selective reduction of the cores supply voltage and operating frequency. Eventually, cores with the same voltage are grouped together, forming voltage islands, to reduce the...