SCHEDULE: NOV 15-20, 2015

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Profile-Based Power Shifting in Interconnection Networks with On/Off Links

SESSION: Interconnection Networks

EVENT TYPE: Papers

EVENT TAG(S): Architectures, Networks

TIME: 11:30AM - 12:00PM

SESSION CHAIR(S): Ilya Baldin

AUTHOR(S):Shinobu Miwa, Hiroshi Nakamura

ROOM:18CD

ABSTRACT:

Overprovisioning hardware devices and coordinating power budgets of the devices are proposed to improve performance in the future power-constrained HPC systems. This coordination process is called power shifting. On the other hand, the latest studies uncover that on/off links have the significant capability to save network power in HPC systems, so the future HPC systems will adopt on/off links in addition to overprovisioning. This paper explores power shifting in interconnection networks with on/off links. Since on/off links keep network power low at application runtime, we can transfer the significant amount of power budgets on networks to the other devices before the application runs. Based on this observation, we propose a profile-based power shifting technique which enables HPC users to transfer the power budget remaining on networks to the other devices at the job dispatch. The experimental results show that the proposed technique significantly improves application performance under various power constraints.

Chair/Author Details:

Ilya Baldin (Chair) - RENCI|

Shinobu Miwa - University of Electro-Communications

Hiroshi Nakamura - University of Tokyo

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Paper provided by the ACM Digital Library

Paper also available from IEEE Computer Society