MultiAmdahl: How Should I Divide My Heterogenous Chip?

Author

Zidenberg, Tsahee ; Keslassy, Isaac ; Weiser, Uri

Author_Institution

EE Dept., Technion - Israel Inst. of Technol., Haifa, Israel

Volume

11

Issue

2

fYear

2012

Firstpage

65

Lastpage

68

Abstract

Future multiprocessor chips will integrate many different units, each tailored to a specific computation. When designing such a system, a chip architect must decide how to distribute the available limited system resources, such as area and power, among all the computational units.In this paper, we introduce MultiAmdahl, an analytical optimization technique for resource sharing among heterogeneous units. MultiAmdahl takes into account the workload, the performance of each computational unit, and the total available resource. The results obtained by MultiAmdahl allow us, for example, to provide a closed-form solution for an optimal asymmetric-offload chip, and to analyze the impact of different design constraints on an optimal chip architecture.

Keywords

microprocessor chips; multiprocessing systems; resource allocation; MultiAmdahl analytical optimization technique; area resource; asymmetric-offload chip; computational unit; design constraint; heterogeneous unit; heterogenous chip; multiprocessor chip; optimal chip architecture; power resource; resource sharing; Central Processing Unit; Computational modeling; Computer architecture; Mathematical model; Optimization; Program processors; Resource management; Central Processing Unit; Chip Multiprocessors; Computational modeling; Computer architecture; Mathematical model; Modeling of computer architecture; Optimization; Program processors; Resource management;

fLanguage

English

Journal_Title

Computer Architecture Letters

Publisher

ieee

ISSN

1556-6056

Type

jour

DOI

10.1109/L-CA.2012.3

Filename

6175876