期刊
2021 IEEE INTERNATIONAL CONFERENCE ON NETWORKING, ARCHITECTURE AND STORAGE (NAS)
卷 -, 期 -, 页码 156-163出版社
IEEE
DOI: 10.1109/NAS51552.2021.9605434
关键词
Break-Even Time (BET); Power Gating Switch (PGS); Inrush Current
This paper explores the reduction of leakage energy and improvement of performance in GPGPU systems by introducing a new multi-modal power gating switch. The redesigned PGS minimizes the inrush current during system activation, optimizing system performance and reliability.
The leakage energy of GPGPU can be reduced by power gating the idle logic or undervolting the storage structures; however, the performance and reliability of the system degrades due to large wake up time and inrush current at time of activation. In this paper, we thoroughly analyze the realistic Break-Even Time (BET) and inrush current for various components in GPGPU architecture considering the recent design of multi-modal Power Gating Switch (PGS). Then, we introduce a new PGS which covers the current PGS drawbacks. Our redesigned PGS is carefully tailored to minimize the inrush current and BET. GPGPU-Sim simulation results for various applications, show that, with incorporating the proposed PGS into GPGPU-Sim, we can save leakage energy up to 82%, 38%, and 60% for register files, integer units, and floating units respectively.
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