NDLI: A Software-to-Hardware Self-Mapping Technique to Enhance Program Throughput for Portable Multimedia Workloads

Content Provider	IEEE Xplore Digital Library
Author	Cheng, A.C.
Copyright Year	2008
Description	Author affiliation: Univ. of Pittsburgh, Pittsburgh (Cheng, A.C.)
Abstract	Continuously increasing demand for richer functionality, faster real-time communication, smaller feature size, longer battery life, more elevated security, and higher reliability is pushing the design for portable multimedia applications into the era where a single system is consisted of a general-purpose CPU interacting with several application-specific accelerating components and co-processors to fulfill the ever diverse constraints imposed multi-directionally. The inter-component communication overhead, along with the engineering efforts required to integrate, verify, and validate such heterogeneous systems are scaled disproportionally as the complexity of such systems continue rising skyrocketedly. Moreover, due to limited instruction encoding space and the need to maintain backward compatibly in the future designs, designers are often forced to include only a very small subset of the total desired functionalities on chip, despite there can be more than sufficient silicon real estate to incorporate these specialized operation units. This paper proposes a cost-effective technique of incorporating diverse functionalities into a single versatile hardware acceleration unit, called VPU, to replace the conventional ALU on a CPU. The proposed VPU can supply the general-purpose CPU with a rich set of operations, which may supersede some or even all of the heterogeneous cores. The superseded hardware components are removed to reduce the integration and communication overhead. The issues of limited instruction encoding space and future backward compatibility are resolved by our proposed dynamic instruction re-mapping technique, in which the instruction bit fields can be redefined on the fly to allow instruction space reuse at run time.
Starting Page	356
Ending Page	361
File Size	445420
Page Count	6
File Format	PDF
ISBN	9780769531106
DOI	10.1109/DELTA.2008.53
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-01-23
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Real time systems Multimedia systems Instruction Fusion Throughput Encoding Batteries Communication system security Application software Energy Efficiency Mobile Embedded SoC Portable Multimedia Hardware Acceleration Coprocessors
Content Type	Text
Resource Type	Article

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