Demand for high-performance computing in spaceflight applications is accelerating the development of next-generation processors for space. These processors, including Boeing's High-Performance Spaceflight Computer (HPSC) and Xilinx's Zynq UltraScale+ MPSoCs, offer feature-rich and multi-core ARM Cortex-A53 processors with hardware extensions for efficient execution and isolation of virtualized systems. This capability for virtualization enables new opportunities for enhanced fault tolerance through system-level redundancy of complete flight-software systems. In this paper, we present Virtualized Space Applications (ViSA), a framework leveraging the Xen hypervisor for deploying software-based fault tolerance for flight systems. We evaluate and analyze ViSA's enhancements to reliability and availability of the system in both an experimental lab setting and under neutron radiation-beam testing at the Los Alamos Neutron Science Center (LANSCE). As a case study, we investigate software-based replication and voting on the core Flight Executive (cFE) suite of flight software from the NASA Goddard Space Flight Center (GSFC) on the ViSA framework.


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    Title :

    Towards resilient spaceflight systems with virtualization


    Contributors:


    Publication date :

    2018-03-01


    Size :

    694667 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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