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Bare-Metal Execution of Hard Real-Time Tasks Within a General-Purpose Operating System Wassen, Georg Lankes, Stefan Hard Real-Time System High-Performance Computing Non-uniform Memory Access Bare-Metal Execution Integrating high performance and real-time demands on multi-processor systems is a challenging task. We present our concept of isolating processes from a general-purpose operating system without deeply invading modifications. This allows executing code on dedicated CPUs with minimum latency and jitter like bare-metal on micro-controllers. The unbounded execution of mixed critical processes on the same system induces performance interference in real-time tasks. We present the implementation of isolated partitions on multi-processor x86 systems running Linux and describe challenges restoring operating system stability. This work also presents our experience with Non-Uniform Memory Access architectures that allow to partition the system in a way that the impact to memory and I/O transfers of other partitions is minimized. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Georg Wassen and Stefan Lankes 2015 Is Part Of OASIcs, Volume 47, 15th International Workshop on Worst-Case Execution Time Analysis (WCET 2015) InProceedings Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/OASIcs.WCET.2015.75 urn:nbn:de:0030-drops-52584 https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.WCET.2015.75 eng https://creativecommons.org/licenses/by/3.0/legalcode