An Zou, Tao Tong, Jingwen Leng, Yazhou Zu, Vijay Janapa Reddi, David Brooks, Gu-Yeon Wei, Xuan Zhang
In Proc. of Design Automation Conference (DAC), Jun. 2017
Despite burgeoning adoptions to improve power delivery efficiency, integrated voltage regulators (IVRs) have yet to be evaluated in a rigorous, systematic, nor quantitative manner. To fulﬁll this need, we present Ivory, a high-level design space exploration tool capable of providing accurate conversion eﬃciency, static performance characteristics, and dy- namic transient responses of an IVR-enabled power delivery subsystem (PDS), enabling rapid trade-oﬀ exploration at early design stage 1000x faster than SPICE simulation. We demonstrate and validate Ivory with a wide spectrum of IVR topologies. In addition, we present a case study using Ivory to reveal the optimal PDS conﬁgurations with underlying power break-downs and area overheads for the GPU manycore architecture, which is yet to embrace IVRs.