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Generalized MultiAmdahl: Optimization of Heterogeneous Multi-Accelerator SoC
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ISSN: 1556-6056
Amir Morad, Technion-Israel Institute of Technology, Haifa
Tomer Morad, Technion-Israel Institute of Technology, Haifa
Leonid Yavits, Technion-Israel Institute of Technology, Haifa
Ran Ginosar, Technion-Israel Institute of Technology, Haifa
Uri Weiser, Technion-Israel Institute of Technology, Haifa
Consider a workload comprising a consecutive sequence of program execution segments, where each segment can either be executed on general purpose processor or offloaded to a hardware accelerator. An analytical optimization framework based on MultiAmdhal framework and Lagrange multipliers, for selecting the optimal set of accelerators and for allocating resources among them under constrained area is proposed. Due to the practical implementation of accelerators, the optimal architecture under area constraints may exclude some of the accelerators. As the fraction of the workload that can be accelerated decreases, resources (e.g. area) may shift from accelerators into the general purpose processor. The framework can be extended in a number of ways, spanning from SoC partitioning, bandwidth to power distribution, energy and other constrained resources.
Index Terms:
MultiAmdahl,Chip Multiprocessors,Modeling of computer architecture
Citation:
Amir Morad, Tomer Morad, Leonid Yavits, Ran Ginosar, Uri Weiser, "Generalized MultiAmdahl: Optimization of Heterogeneous Multi-Accelerator SoC," IEEE Computer Architecture Letters, 08 Oct. 2012. IEEE computer Society Digital Library. IEEE Computer Society, <http://doi.ieeecomputersociety.org/10.1109/L-CA.2012.34>
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