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FPGA Architecture Support for Heterogeneous, Relocatable Partial Bitstreams

Abstract : The use of partial dynamic reconfiguration in FPGA-based systems has grown in recent years as the spectrum of applications which use this feature has increased. For these systems, it is desirable to create a series of partial bitstreams which represent tasks which can be located in multiple regions in the FPGA fabric. While the transferal of homogeneous collections of lookup-table based logic blocks from region to region has been shown to be relatively straightforward, it is more difficult to transfer partial bitstreams which contain fixed-function re- sources, such as block RAMs and DSP blocks. In this paper we consider FPGA architecture enhancements which allow for the migration of partial bitstreams including fixed-function resources from region to region even if these resources are not located in the same position in each region. Our approach does not require significant, time-consuming place-and-route during the migration process. We quantify the cost of inserting additional routing resources into the FPGA architecture to allow for easy migration of heterogeneous, fixed-function resources. Our experiments show that this flexibility can be added for a relatively low overhead and performance penalty.
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https://hal.inria.fr/hal-01017184
Contributor : Christophe Huriaux <>
Submitted on : Wednesday, July 2, 2014 - 7:11:29 AM
Last modification on : Friday, July 10, 2020 - 4:21:30 PM
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Christophe Huriaux, Olivier Sentieys, Russell Tessier. FPGA Architecture Support for Heterogeneous, Relocatable Partial Bitstreams. FPL - 24th International Conference on Field Programmable Logic and Applications, Sep 2014, Munich, Germany. ⟨10.1109/FPL.2014.6927494⟩. ⟨hal-01017184⟩

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