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MultiAmdahl: How Should I Divide My Heterogenous Chip?
July-Dec. 2012 (vol. 11 no. 2)
pp. 65-68
Tsahee Zidenberg, Technion, Haifa
Isaac Keslassy, Technion, Haifa
Uri Weiser, Technion Office, Haifa Tel Aviv
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.
Index Terms:
Mathematical model,Program processors,Resource management,Computational modeling,Optimization,Computer architecture,Central Processing Unit,Chip Multiprocessors,Mathematical model,Program processors,Resource management,Computational modeling,Optimization,Computer architecture,Central Processing Unit,Modeling of computer architecture
Citation:
Tsahee Zidenberg, Isaac Keslassy, Uri Weiser, "MultiAmdahl: How Should I Divide My Heterogenous Chip?," IEEE Computer Architecture Letters, vol. 11, no. 2, pp. 65-68, July-Dec. 2012, doi:10.1109/L-CA.2012.3
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