Reliable and Real Time Linux for HPSC

From a hardware perspective, NASArsquo;s currently deployed state-of-the-art (SOA) in space computing may be inadequate for future missions. NASA#39;s intention is that the new SOA for in space processing will be HPSC Chiplet based. However, in order to provide advanced computing capabilities and application programming support, a fault tolerant, reliable real-time (RT) Linux OS that makes available the full capabilities of the HPSC Chiplet is highly desired. During the Phase I effort, Antara established a foundational framework with a repeatable, deterministic RT kernel minimization, build and test methodology utilizing stable mainline Linux kernels. RT test results show that the Worst-Case Execution Time (WCET) of Antara#39;s prototype is significantly lower and more deterministic than those of the vanilla Linux kernels. Phase II efforts will further enhance and harden Antara#39;s RT Linux Prototype for HPSC. Antara will also benchmark and analyze its RT Linux kernel with the HPSC Middleware and the cFE/cFS scheduler. The RT Linux Prototype will be bench-tested and optimized on HPSC Chiplet based boards to establish and demonstrate deterministic performance to achieve TRL 7. Antara#39;s fully configurable Reliable RT Linux will provide a natively multi-threaded, secure and re-entrant kernel with near-time determinism and advanced preemptive scheduling. The proposed innovation is significant and will enable rapid development and infusion of a flight qualifiable, reliable, dynamically upgradeable RT Linux to the HPSC Ecosystem. Since many science applications already start off development in Linux, Antara#39;s RT Linux will remove any extra porting steps saving effort and reducing risk. Successful infusion of the cross-cutting innovation will enhance the HPSC Ecosystem and support major programs. The innovation will support potential near-term infusion targets such as Mars Fetch Rover, Lunar Gateway, SPLICE/Lunar Lander and the Moon to Mars campaign.