Single-ISA Heterogeneous Multi-Core Architectures: The Potential for Processor Power Reduction. Rakesh Kumar,Keith I. Farkas,Norman P. Jouppi,Parthasarathy Ranganathan,Dean M. Tullsen Proceedings of the 36th International Symposium on Microarchitecture (MICRO-36’03).
Single-ISA HeterogeneousMulti-Core Architectures:The Potential for Processor Power Reduction
Rakesh Kumar,Keith I. Farkas,Norman P. Jouppi,Parthasarathy Ranganathan,Dean M. Tullsen
Proceedings of the 36th International Symposium on Microarchitecture (MICRO-36’03)
Advanced computer architecture CSE 8383
We can note that EV6,EV8 are heavily used because of the performance constraint they apply
some don't achieve any thing because switching was denied by performance constraint (10% of EV8- )
Overall, having heterogeneous processor cores provides potentially greater power savings compared to previous approaches and greater flexibility and scalability of architecture design. Moreover, these previous approaches can still be used in a multi-core processor to greater advantage.
A multi-core heterogeneous architecture can support a range of execution characteristics not possible in an adaptable single-core processor, even one that employs aggressive gating.
Such an architecture can adapt not only to changing demands in a single application, but also to changing demands between applications, changing priorities or objective functions within a processor or between applications, or even changing operating environments.