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Published Articles >> Table of Contents >> Abstract
12th Euromicro Conference on Parallel, Distributed and Network-Based Processing (PDP'04)
p. 300
Cooperative Software Multithreading to Enhance Utilization of Embedded Processors for Network Applications
Carsten Albrecht, University of Lübeck
Rainer Hagenau, University of Lübeck
Andreas Doring, IBM Zurich Research Laboratory
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DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/EMPDP.2004.1271459
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| Abstract |
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Multithreading is an efficient way to improve efficiency of processor cores in embedded products for networking infrastructures. To make such improvements also accessible to processor cores without hardware support for multithreading, we present a concept for efficient software multithreading through compiler post-pass optimization of the application code. Our approach aims at reducing the overhead for cooperative multithreading context switches at compile time by using standard compiler techniques such as context-insensitive analysis. Additionally, register usage is rearranged to reduce the amount of context-switch code by exploiting multiple-load/store instructions. Performance model analysis encourages the use of software multithreading to improve processor utilization by showing the benefit of our approach. We present results obtained by an implementation for the PowerPC ISA (Instruction Set Architecture) using the code of a real network application (iSCSI). We were able to reduce the expected run-time of a context switch to as little as 38% of the original.
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 Additional Information
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Citation:
Carsten Albrecht, Rainer Hagenau, Andreas Doring,
"Cooperative Software Multithreading to Enhance Utilization of Embedded Processors for Network Applications,"
pdp,
p. 300,
12th Euromicro Conference on Parallel, Distributed and Network-Based Processing (PDP'04),
2004
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