Composite Cores: Pushing Heterogeneity into a Core

Provided by: University of Miami School of Business Administration
Topic: Hardware
Format: PDF
Heterogeneous multicore systems - comprised of multiple cores with varying capabilities, performance, and energy characteristics - have emerged as a promising approach to increasing energy efficiency. Such systems reduce energy consumption by identifying phase changes in an application and migrating execution to the most efficient core that meets its current performance requirements. However, due to the overhead of switching between cores, migration opportunities are limited to coarse-grained phases (hundreds of millions of instructions), reducing the potential to exploit energy efficient cores.

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