Name
Abstract | ||
|---|---|---|
Spatially-tiled architectures, such as Coarse-Grained Reconfigurable Arrays (CGRAs), are powerful architectures for accelerating applications in the digital-signal processing, embedded, and scientific computing domains. In contrast to Field-Programmable Gate Arrays (FPGAs), another common accelerator, they typically time-multiplex their processing elements and are word rather than bit-oriented. These differences lead us to re-examine some of the traditional architecture choices made for FPGAs as we move to these coarser-granularity architectures. In this paper we study the efficiency of time-multiplexing global interconnect as architectures scale from single-bit to multi-bit datapaths. Using the Mosaic infrastructure, we analyzed the design trade-offs involved in static vs. time-multiplexed routing for global interconnect channels, as well as the benefit of including a dedicated bit-wide control interconnect to supplement the word-wide datapath of a CGRA. We show that a time-multiplexed interconnect is beneficial in these coarse-grained systems, reducing the area-energy product to 0.32x the area-energy product of a fully static interconnect. We also show that for our benchmarks, which include single-bit control logic, providing both word and bit-wide interconnect resources further reduces the area-energy product to 0.94x that of an exclusively word-wide interconnect. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/FPL.2009.5272293 | International Conference on Field Programmable and Logic Applications |
Keywords | Field | DocType |
benchmark testing,switches,computer architecture,field programmable gate array,digital signal processing,field programmable gate arrays,scheduling,fpga,energy production,scientific computing | Digital signal processing,Datapath,Scheduling (computing),Computer science,Parallel computing,Field-programmable gate array,Communication channel,Real-time computing,Control logic,Interconnection,Benchmark (computing) | Conference |
ISSN | Citations | PageRank |
1946-1488 | 9 | 0.56 |
References | Authors | |
18 | 8 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Brian Van Essen | 1 | 183 | 15.53 |
| Aaron Wood | 2 | 9 | 0.56 |
| Allan Carroll | 3 | 40 | 1.81 |
| Stephen Friedman | 4 | 98 | 4.62 |
| Robin Panda | 5 | 26 | 3.68 |
| Benjamin Ylvisaker | 6 | 71 | 3.39 |
| Carl Ebeling | 7 | 1405 | 185.32 |
| Scott Hauck | 8 | 2539 | 232.71 |