Layered switching for networks on chip

• We present and evaluate a novel switching mechanism called layered switching. Conceptually, the layered switching implements wormhole on top of virtual cut-through switching. To show the feasibility of layered switching, as well as to confirm its advantages, we conducted an RTL implementation study based on a canonical wormhole architecture. Synthesis results show that our strategy suggests negligible degradation in hardware speed (1%) and area overhead (7%). Simulation results demonstrate that it achieves higher throughput than wormhole alone while significantly reducing the buffer space required at network nodes when compared with virtual cut-through.

Subject headings

NATURVETENSKAP  -- Data- och informationsvetenskap (hsv//swe)

NATURAL SCIENCES  -- Computer and Information Sciences (hsv//eng)

Keyword

network-on-chip

system-on-chip

switching technique

Publication and Content Type

ref (subject category)

kon (subject category)