Doctoral Thesis: On-chip Network for Manycore Architecture

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Event Speaker: 

Myong Hyon (Brandon) Cho

Event Location: 

32-G882 (Hewlett Room)

Event Date/Time: 

Wednesday, July 31, 2013 - 10:00am

Abstract:

Over the past decade, increasing the number of cores on a single processor has successfully enabled continued improvements computer performance. Further scaling these designs to tens and hundreds of cores, however, still presents a number hard problems, such as scalability, power efficiency, effective programming models, etc.

A key component of manycore systems is the on-chip network, which faces increasing efficiency demands as the number of cores grows. In this talk, we present three techniques for improving the efficiency of on-chip interconnects. First, we discuss PROM (Path-based, Randomized, Oblivious, and Minimal routing) and BAN (Bandwidth Adaptive Networks), techniques which offer efficient intercore communication for bandwith-constrained oblivious networks. Next, we present ENC (Exclusive Native Context), the first deadlock-free, fine-grained thread migration protocol developed for on-chip networks. ENC demonstrates that a simple and elegant technique in the on-chip network interconnect can provide critical functional support for higher-level application and system layers. Finally, we provide a realistic context by sharing our hands-on experience in the physical implementation of the on-chip network for EM2, an ENC-based 110-core processor in the 45nm ASIC technology.
 
Thesis Supervisor: Professor Devadas

Relevant URL:

For more information please contact: Myong Hyon Cho, mailto://mhcho@csail.mit.edu