Dynamically heterogeneous cores through 3d resource pooling

This paper describes an architecture for a dynamically heterogeneous processor architecture leveraging 3D stack-ing technology. Unlike prior work in the 2D plane, the ex-tra dimension makes it possible to share resources at a ne granularity between vertically stacked cores. As a result, each core can grow or shrink resources, as needed by the code running on the core. This architecture, therefore, enables runtime customiza-tion of cores at a ne granularity and enables efcient exe-cution at both high and low levels of thread parallelism. This architecture achieves performance gains from 9-41%, depending on the number of executing threads, and gains signicant advantage in energy efciency of up to 43%. 1