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Friedrich-Alexander-Universität Lehrstuhl für Informatik 4 (Systemsoftware)
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Embedded System Software

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Embedded System Software

News

  • GI Women and Computer Science 2025 Award for Eva Dengler - To our great pleasure, the master’s thesis “Clock-Tree–Aware Resource-Consumption Models for Embedded SoC Platforms” by our colleague Eva Dengler was awarded WITA 2025 prize for the best master’s thesis of the Fachgruppe Frauen und Informatik. The thesis was supervised by Peter Wägemann and Simon Schuster at our chair. The research...
  • ECRTS’24 in Lille - Last week, Eva Dengler took part at the ECRTS in Lille, France. She presented our work “Crêpe: Clock-Reconfiguration-Aware Preemption Control in Real-Time Systems with Devices”, written together with Peter Wägemann. The paper targets the optimization of time-critical real-time systems with device usage regarding their energy usage. Besides the conference, there...
  • HotCarbon 2024 - The third edition of the HotCarbon workshop takes place today in Santa Cruz, California. Our chair participates with the paper “CO2CoDe: Towards Carbon-Aware Hardware/Software Co-Design for Intermittently-Powered Embedded Systems”, for which Phillip Raffeck recorded a video talk. With the help of an exemplary case study, our paper highlights the necessity...
  • LCTES/PLDI 2024 - Last week, Phillip Raffeck attented the PLDI conference in Copenhagen, Denmark. At the co-hosted conference LCTES he presented our paper WoCA: Avoiding Intermittent Execution in Embedded Systems by Worst-Case Analyses with Device States, an approach to give forward progress guarantees for intermittent systems via static analysis.
  • Graduate Award of the GI Special Interest Group on Operating Systems to Eva Dengler - Our former student assistant Eva Dengler has won the Graduate Award 2023 of the GI Special Interest Group on Operating Systems with her master thesis on “Clock-Tree-Aware Resource Consumption Models for Embedded SoC Platforms”. The work was supervised by Peter Wägemann and was part of the DFG project Watwa, in...
  • ECRTS 2023 - Our chair was represented with substantial contributions at the 35th Euromicro Conference on Real-Time Systems (ECRTS 2023) in Vienna: On Tuesday, July 11, Peter Wägemann organized the 21st International Workshop on Worst-Case Execution Time Analysis (WCET 2023). The following day, Eva Dengler presented FusionClock: Energy-Optimal Clock-Tree Reconfigurations for Energy-Constrained Real-Time...
  • OSPERT 2022/ECRTS 2022 - Phillip Raffeck attended OSPERT workshop and the ECRTS conference in Modena, Italy this week. At the workshop he presented our paper Revisiting Migration Overheads in Real-Time Systems: One Look at Not-So-Uniform Platforms, which provides fundamental insights for our research project maRE in collaboration with the System Software Group at the...

Embedded System Software

  • real-time systems
  • worst-case execution time (WCET)
  • worst-case energy consumption (WCEC)
  • carbon-aware embedded systems
  • energy-aware scheduling
  • (real-time) operating systems

Projects:

Term: since 1. November 2022
Funding source: Deutsche Forschungsgemeinschaft (DFG)
Project leader: Peter Wägemann

Energy-constrained real-time systems, such as implantable medical devices, are prevalent in modern life. These systems demand its software to fulfill both properties of safe and energy-efficient task executions. Regarding safety, these systems must execute their tasks within execution-time and energy bounds since resource-budget violations potentially cause danger to life. In order to guarantee the system's safe execution with the given time and energy resources, static program-code analysis tools…

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Term: since 26. March 2021
Funding source: Deutsche Forschungsgemeinschaft (DFG)
Project leader: Wolfgang Schröder-Preikschat, Peter Wägemann

Within the wide subject of resilience in networked worlds ResPECT focuses on a core element of all networked systems: sensor- and actuator-nodes in cyber-physical systems. Communication up to today is understood and implemented as an auxiliary functionality of embedded systems. The system itself is disruption-tolerant and able to handle power failures or in a limited scope even hardware problems, but the communication isn't part of the overall design. In the best case it can make use of the underlying…

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Contact Persons:

  • Peter Wägemann

Participating Scientists:

  • Peter Wägemann
  • Phillip Raffeck
  • Simon Schuster
  • Eva Dengler
  • Wolfgang Schröder-Preikschat
  • Luis Gerhorst

Publications:

  • Dengler E., Wägemann P.:
    Crêpe: Clock Reconfigurability for Preemption Control (Artifact)
    In: Schloss Dagstuhl - Leibniz-Zentrum für Informatik (ed.): Dagstuhl Artifacts Series, 2024 (Dagstuhl Artifacts Series, Vol.10)
    DOI: 10.4230/DARTS.10.1.2
    URL: https://drops.dagstuhl.de/storage/05darts/darts-vol010/darts-vol010-issue001_ecrts2024/DARTS.10.1.2/DARTS.10.1.2.pdf
  • Dengler E., Wägemann P.:
    Crêpe: Clock-Reconfiguration–Aware Preemption Control in Real-Time Systems with Devices
    36th Euromicro Conference on Real-Time Systems (Lille, France, 9. July 2024 - 12. July 2024)
    In: Proceedings of the 36th Euromicro Conference on Real-Time Systems (ECRTS 2024) 2024
    DOI: 10.4230/LIPIcs.ECRTS.2024.10
    URL: https://drops.dagstuhl.de/storage/00lipics/lipics-vol298-ecrts2024/LIPIcs.ECRTS.2024.10/LIPIcs.ECRTS.2024.10.pdf
  • Dengler E., Raffeck P., Schuster S., Wägemann P.:
    FusionClock: Energy-Optimal Clock-Tree Reconfigurations for Energy-Constrained Real-Time Systems
    35th Euromicro Conference on Real-Time Systems (ECRTS '23) (Vienna, Austria)
    In: Proceedings of the 35th Euromicro Conference on Real-Time Systems (ECRTS '23) 2023
    DOI: 10.4230/LIPIcs.ECRTS.2023.6
  • Dengler E., Raffeck P., Schuster S., Wägemann P.:
    FusionClock: WCEC-Optimal Clock-Tree Reconfigurations (Artifact)
    In: Dagstuhl Artifacts Series, 2023, p. 2:1--2:3 (Dagstuhl Artifacts Series, Vol.9)
    DOI: 10.4230/DARTS.9.1.2
    URL: https://drops.dagstuhl.de/opus/volltexte/2023/18023/pdf/DARTS-9-1-2.pdf
  • Wägemann P., Distler T., Hönig T., Janker H., Kapitza R., Schröder-Preikschat W.:
    Worst-Case Energy Consumption Analysis for Energy-Constrained Embedded Systems
    Euromicro Conference on Real-Time Systems (Lund, Sweden)
    In: Proceedings of the 27th Euromicro Conference on Real-Time Systems (ECRTS '15) 2015
    DOI: 10.1109/ECRTS.2015.17
    URL: https://www4.cs.fau.de/Publications/2015/waegemann_15_ecrts.pdf
  • Vogelgesang K., Mudraje I., Gerhorst L., Raffeck P., Wägemann P., Herfet T., Schröder-Preikschat W.:
    PfIP: A UDP/IP Transactional Network Stack for Power-Failure Resilience in Embedded Systems
    22nd IEEE Consumer Communications & Networking Conference (CCNC) (Las Vegas, NV, USA, 10. January 2025 - 13. January 2025)
    In: Proceedings of the Consumer Communications & Networking Conference (CCNC 2025) 2025
    Open Access: https://sys.cs.fau.de/publications/2025/vogelgesang_25_ccnc.pdf
    URL: https://sys.cs.fau.de/publications/2025/vogelgesang_25_ccnc.pdf
  • Raffeck P., Posner S., Wägemann P.:
    CO2CoDe: Towards Carbon-Aware Hardware/Software Co-Design for Intermittently-Powered Embedded Systems
    HotCarbon Workshop on Sustainable Computer Systems (Santa Cruz, CA, 9. July 2024 - 9. July 2024)
    In: Proceedings of the HotCarbon Workshop on Sustainable Computer Systems (HotCarbon '24) 2024
    URL: https://sys.cs.fau.de/publications/2024/raffeck_24_hotcarbon.pdf
  • Maroun EJ., Dengler E., Dietrich C., Herzog H., Hepp S., Huber B., Knoop J., Wiltsche-Prokesch D., Puschner P., Raffeck P., Schoeberl M., Schuster S., Wägemann P.:
    The Platin Multi-Target Worst-Case Analysis Tool
    22nd International Workshop on Worst-Case Execution Time Analysis (WCET 2024) (Lille, France, 9. July 2024 - 9. July 2024)
    In: Proceedings of the 22nd International Workshop on Worst-Case Execution Time Analysis (WCET 2024) 2024
    DOI: 10.4230/OASIcs.WCET.2024.2
    URL: https://drops.dagstuhl.de/storage/01oasics/oasics-vol121-wcet2024/OASIcs.WCET.2024.2/OASIcs.WCET.2024.2.pdf
  • Böhm H., Distler T., Wägemann P.:
    TinyBFT: Byzantine Fault-Tolerant Replication for Highly Resource-Constrained Embedded Systems
    30th IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS 2024) (Hong Kong, China, 13. May 2024 - 16. May 2024)
    In: Proceedings of the 30th IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS 2024) 2024
    DOI: 10.1109/RTAS61025.2024.00026
    URL: https://sys.cs.fau.de/publications/2024/boehm_24_rtas.pdf
  • Gerhorst L., Herzog H., Wägemann P., Ott M., Kapitza R., Hönig T.:
    VeriFence: Lightweight and Precise Spectre Defenses for Untrusted Linux Kernel Extensions
    RAID'24: The 27th International Symposium on Research in Attacks, Intrusions and Defenses (Padua, 30. September 2024 - 2. October 2024)
    In: Proceedings of the 27th International Symposium on Research in Attacks, Intrusions and Defenses, RAID 2024
    DOI: 10.1145/3678890.3678907
    URL: https://arxiv.org/pdf/2405.00078
  • Vogelgesang K., Raffeck P., Wägemann P., Herfet T., Schröder-Preikschat W.:
    WIP: Towards a Transactional Network Stack for Power-Failure Resilience
    In: Proceedings of the 21st IEEE Consumer Communications & Networking Conference (CCNC) - Work-In-Progress 2024
    DOI: 10.1109/CCNC51664.2024.10454781
  • Raffeck P., Maier J., Wägemann P.:
    WoCA: Avoiding Intermittent Execution in Embedded Systems by Worst-Case Analyses with Device States
    25th ACM SIGPLAN/SIGBED International Conference on Languages, Compilers, and Tools for Embedded Systems (LCTES 2024) (Copenhagen, Denmark, 24. June 2024 - 28. June 2024)
    In: Proceedings of the 25th ACM SIGPLAN/SIGBED International Conference on Languages, Compilers, and Tools for Embedded Systems (LCTES 2024) 2024
    URL: https://sys.cs.fau.de/publications/2024/raffeck_24_lctes.pdf
  • Raffeck P., Wägemann P.:
    Ecology-Aware Material Use as a Pervasive Trait in Intermittent Real-Time Systems
    35th Euromicro Conference on Real-Time Systems, Real-Time Pitches session (Vienna, Austria, 11. July 2023 - 14. May 2023)
    Open Access: https://sys.cs.fau.de/publications/2023/raffeck_23_ecrts-poster.pdf
    URL: https://sys.cs.fau.de/publications/2023/raffeck_23_ecrts-poster.pdf
  • Heinloth B., Wägemann P., Schröder-Preikschat W.:
    Luci: Loader-based Dynamic Software Updates for Off-the-shelf Shared Objects
    2023 USENIX Annual Technical Conference (Boston, MA, 10. July 2023 - 12. July 2023)
    In: 2023 USENIX Annual Technical Conference (USENIX ATC 23) 2023
    Open Access: https://www.usenix.org/system/files/atc23-heinloth.pdf
    URL: https://www.usenix.org/system/files/atc23-heinloth.pdf
  • Schuster S., Wägemann P., Ulbrich P., Schröder-Preikschat W.:
    Annotate Once - Analyze Anywhere: Context-Aware WCET Analysis by User-Defined Abstractions
    22nd ACM SIGPLAN/SIGBED International Conference on Languages, Compilers, and Tools for Embedded Systems, LCTES 2021 (Virtual, Online, CAN, 22. June 2021)
    In: Jorg Henkel, Xu Liu (ed.): Proceedings of the 22nd SIGPLAN/SIGBED International Conference on Languages,Compilers, and Tools for Embedded Systems (LCTES '21), New York, NY, USA: 2021
    DOI: 10.1145/3461648.3463847
    URL: https://www4.cs.fau.de/Publications/2021/schuster_21_lctes.pdf
  • Vaas S., Ulbrich P., Eichler C., Wägemann P., Reichenbach M., Fey D.:
    Taming Non-Deterministic Low-Level I/O: Predictable Multi-Core Real-Time Systems by SoC Co-Design
    2021 IEEE 24th International Symposium on Real-Time Distributed Computing (ISORC)
    DOI: 10.1109/isorc52013.2021.00017
    URL: https://www4.cs.fau.de/Publications/2021/vaas_21_isorc.pdf
  • Mudraje I., Vogelgesang K., Devreker J., Gerhorst L., Raffeck P., Wägemann P., Herfet T.:
    Reverse Engineering the ESP32-C3 Wi-Fi Drivers for Static Worst-Case Analysis of Intermittently-Powered Systems
    13th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems (ENSsys '25) (Irvine, CA, USA, 6. May 2025 - 9. April 2025)
    In: Proceedings of the 13th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems (ENSsys ’25) 2025
    Open Access: https://arxiv.org/pdf/2501.17684
    URL: https://arxiv.org/pdf/2501.17684
  • Gerber ME., Gerhorst L., Mudraje I., Vogelgesang K., Herfet T., Wägemann P.:
    vNV-Heap: An Ownership-based Virtually Non-Volatile Heap for Embedded Systems
    International Conference on Languages, Compilers, and Tools for Embedded Systems (LCTES 2025)
    Open Access: https://arxiv.org/pdf/2501.17707
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