Power and performance optimization of voltage/frequency island-based networks-on-chip using reconfigurable synchronous/bi-synchronous FIFOs
2010 (English)In: 7th ACM International Conference on Computing Frontiers, CF'10, 2010, 267-276 p.Conference paper (Refereed)
Distributing a single global clock across a chip while meeting the power requirements of the design is a troublesome task due to shrinking technology nodes associated with high clock frequencies. To deal with this, network-on-chip (NoC) architectures partitioned into several voltage-frequency islands (VFIs) have been proposed. To interface the islands on a chip, operating at different frequencies, a complex bi-synchronous FIFO design is inevitable. However, these FIFOs are not needed if adjacent switches belong to the same clock domain. In this paper, a Reconfigurable Synchronous/Bi-Synchronous (RSBS) FIFO is proposed which can adapt its operation to either synchronous or bi-synchronous mode. The FIFO is presented by three different scalable and synthesizable design styles and, in addition, some techniques are suggested to show how the FIFO could be utilized in a VFI-based NoC. Our analysis reveal that the RSBS FIFOs can help to achieve up to 15% savings in the average power consumption of NoC switches and 29% improvement in the total average packet latency in the case of MPEG-4 encoder application, when compared to a non-reconfigurable architecture.
Place, publisher, year, edition, pages
2010. 267-276 p.
globally asynchronous locally synchronous (gals), low-power and high-performance design, networks-on-chip (nocs), reconfigurable fifos, voltage/frequency islands (vfis)
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-74759DOI: 10.1145/1787275.1787335ScopusID: 2-s2.0-77954508584ISBN: 978-145030044-5OAI: oai:DiVA.org:kth-74759DiVA: diva2:489970
7th ACM International Conference on Computing Frontiers, CF'10. Bertinoro. 17 May 2010 - 19 May 2010
QC 201202062012-02-032012-02-032015-07-29Bibliographically approved