Adaptive Allocation of Software and Hardware Real-Time Tasks for FPGA-based Embedded Systems

Authors:
Rodolfo Pellizzoni;Marco Caccamo
Affiliations:
University of Illinois at Urbana-Champaign;University of Illinois at Urbana-Champaign
Venue:
RTAS '06 Proceedings of the 12th IEEE Real-Time and Embedded Technology and Applications Symposium
Year:
2006

Citing 0
Cited 5

Real-Time Management of Hardware and Software Tasks for FPGA-based Embedded Systems

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Scheduling and Placement of Hardware/Software Real-Time Relocatable Tasks in Dynamically Partially Reconfigurable Systems

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Energy-aware design of secure multi-mode real-time embedded systems with FPGA co-processors

Proceedings of the 21st International conference on Real-Time Networks and Systems

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Abstract

Operating systems for reconfigurable devices enable the development of embedded systems where software tasks, running on a CPU, can coexist with hardware tasks running on a reconfigurable hardware device (FPGA). Furthermore, in such systems relocatable tasks can be migrated from software to hardware and viceversa. The combination of high performance and predictability of hardware execution with software flexibility makes such architecture especially suitable to implement high-performance real-time embedded systems. In this work, we first discuss design and scheduling issues for relocatable tasks. We then concentrate on the on-line admission control problem. Task allocation and migration between the CPU and the reconfigurable device is discussed and sufficient feasibility tests are derived. Finally, the effectiveness of our relocation strategy is shown through a series of synthetic simulations.