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Mixed-Trust Computing for Real-Time Systems
2019
2019 IEEE 25th International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA)
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The untrusted part allows complex computations supported by a full OS with a realtime scheduler running in a VM hosted by a trusted hypervisor. ...
We present the framework design and implementation along with the schedulability analysis and the coordination protocol between the trusted and untrusted parts. ...
We are not aware of any work on a mixedcriticality scheduler that considers our task model and uses a formally verified HV. ...
doi:10.1109/rtcsa.2019.8864566
dblp:conf/rtcsa/NizAKLVKM19
fatcat:vwajglot7nffndrs55fja2beim
A survey on formal specification and verification of separation kernels
[article]
2016
arXiv
pre-print
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This paper presents an overview of formal specification and verification of separation kernels. ...
Separation kernels are fundamental software of safety and security-critical systems, which provide to their hosted applications spatial and temporal separation as well as controlled information flows among ...
separation using a non-preemptive scheduler and the messaging system. ...
arXiv:1508.07066v3
fatcat:o6rltzjp4vf4jeifjddfbtmuv4
High-Assurance Separation Kernels: A Survey on Formal Methods
[article]
2017
arXiv
pre-print
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In accordance with the analytical framework, a comprehensive analysis and discussion of related work are presented. ...
Finally, four challenges and their possible technical directions for future research are identified, e.g. specification bottleneck, multicore and concurrency, and automation of full formal verification ...
Partitioning kernels specialize and enhance the temporal and spatial separation with a static table-driven scheduling approach [Ramamritham and Stankovic 1994] and static resource allocation for partitions ...
arXiv:1701.01535v1
fatcat:wivlgaqkmffc5nb2kalmpy77sy
Architectural and Operating System Support for Virtual Memory
2017
Synthesis Lectures on Computer Architecture
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We thank her for her support in pursuing our research endeavors. We also thank the many collaborators with whom we have explored various topics pertaining to virtual memory. ...
A special thanks to Mike Morgan for his support of this book. ...
THE VIRTUAL MEMORY ABSTRACTION
2. THE VIRTUAL MEMORY ABSTRACTION
2. THE VIRTUAL MEMORY ABSTRACTION
2. THE VIRTUAL MEMORY ABSTRACTION
2. THE VIRTUAL MEMORY ABSTRACTION
2. ...
doi:10.2200/s00795ed1v01y201708cac042
fatcat:4re5afn53jhu7ezxwtb25ja3ca
A unified execution model for multiple computation models of streaming applications on a composable MPSoC
2013
Journal of systems architecture
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In this paper we propose a unified model of execution that aims to fill the abstraction level gap between the primitives of models of computation and the ones of an MPSoC. ...
We implement these models of computation with the model of execution, and discuss the trade-offs involved. ...
Consequently, the task scheduler cannot interface with the hardware interrupts, and therefore, it cannot implement preemptive scheduling policies. ...
doi:10.1016/j.sysarc.2013.07.006
fatcat:wjj22fdihzdv7m3tarup7p4ohq
Challenge benchmarks for verification of real-time programs
2010
Proceedings of the 4th ACM SIGPLAN workshop on Programming languages meets program verification - PLPV '10
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But, our main contribution is a family of programs, called CDx, which we present as an open source benchmark for the verification community. ...
Real-time systems, and in particular safety-critical systems, are a rich source of challenges for the program verification community as software errors can have catastrophic consequences. ...
Emphasis is placed on using periodic event handlers instead of threads, with preemptive, priority based scheduling. ...
doi:10.1145/1707790.1707800
dblp:conf/plpv/KaliberaPHLV10
fatcat:exw44v56fbhkdcu7nhof74b6ca
The Weaves Reconfigurable Programming Framework
[article]
2002
arXiv
pre-print
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The Weaves framework supports multiple independent components in a single process, with flexible state sharing and scheduling, all of which is achieved without requiring any modification to existing code ...
Weaves also include support for fast automatic checkpointing and recovery with no application support. ...
Preemptive scheduling switches between strings of different equivalence classes. ...
arXiv:cs/0210031v1
fatcat:gjaeqmuofbaznepitxj264ewtm
Message from the Program Chairs
2006
2006 IEEE International Conference on Web Services (ICWS'06)
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This algorithm has been available via a MatLab forum for a number of years; however, this is the first time it has been formally published. ...
Abstract-In this paper we present a simulation-based analysis to infer the fault resilience of real-time systems. ...
ACKNOWLEDGMENTS The authors would like to thank Enrico Bini for his contribution to discussions about the applicability of the UUniFast algorithm to the multiprocessor case. ...
doi:10.1109/icws.2006.90
dblp:conf/icws/X06a
fatcat:bq447df4qzfsboa7pcpu7lcjty
A survey on standards for real-time distribution middleware
2014
ACM Computing Surveys
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to ensure determinism-for example, thread and network message scheduling, the assignment of scheduling parameters, or the use of synchronization protocols for a predictable access to shared resources. ...
The JavaSpaces specification presents a high-level abstraction for building distributed applications and so it relies on low-level communication middleware such as RMI. ...
ACKNOWLEDGMENTS The authors want to thank the anonymous reviewers for their many detailed comments that have allowed the article to be enhanced significantly. ...
doi:10.1145/2532636
fatcat:gjgkut7szzbkxnuxrkfvqmq2km
Combined Security and Schedulability Analysis for MILS Real-Time Critical Architectures
2019
Euromicro Conference on Real-Time Systems
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Acknowledgements The authors would like to thank the anonymous reviewers of the paper at CERTS and internal reviewers at SYSGO for their valuable feedback. ...
System model and assumptions We assume a RTCS consisting of tasks scheduled by a preemptive fixed priority scheduler. ...
We assume a single processor execution platform, on which all the tasks are placed in the same partition. The task set is synchronous and scheduled by preemptive fixed priority scheduler. ...
doi:10.4230/oasics.certs.2019.1
dblp:conf/ecrts/AtchadamSTBL19
fatcat:5jglkqo3tjg35grf2riw2wtzl4
Towards Predictable Real-Time Performance on Multi-Core Platforms
[article]
2016
arXiv
pre-print
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A key requirement of such systems is the need to provide predictable real-time performance: the timing correctness of the system should be analyzable at design time with a quantitative metric and guaranteed ...
at runtime with high assurance. ...
The
Table 8 . 1 : 81 Comparison with previous work Priority
VCPU
Bounded
Enforced
Task
Unmodified
Schemes
based
temporal
interrupt
interrupt
schedulability
guest OS
scheduling
isolation ...
arXiv:1607.08578v1
fatcat:2ndmimzpxbehzlntoppabtusbq
Floor control for multimedia conferencing and collaboration
1997
Multimedia Systems
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A general framework for floor control is presented. Collaborative environments are characterized and the requirements for realization of floor control will be identified. ...
Based upon a brief taxonomy of collaboration-relevant parameters, system design issues for floor control are discussed. ...
Finally, collaborative virtual reality (VR) tools [28] create a literal need for spatial floor control of virtual objects, next to collision control. ...
doi:10.1007/s005300050040
fatcat:uawclq7wszerhkszyoxjek5qpi
Time-Predictable Embedded Software on Multi-Core Platforms: Analysis and Optimization
2014
Foundations and Trends® in Electronic Design Automation
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} else { x++; } } } m4 The properties verified are temporal logic properties, which constrain ordering of specific events in program executions. ...
This is due to virtual loop unrolling. The bus analysis described in 3.2.4 solves this problem by aligning loop iterations with bus schedules. ...
ity with respect to different pipeline structures, cache sizes and the presence of speculative execution. ...
doi:10.1561/1000000037
fatcat:r6mishcfabevvjuoq5k7rdzsfu
Software Performance Engineering using Virtual Time Program Execution
2014
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We explore these ideas using a Virtual EXecution (VEX) framework, which provides performance predictions for multi-threaded applications. ...
We conclude this thesis with a case study that shows how models and code can be integrated, thus illustrating our vision on how virtual time execution can support performance testing throughout the soft ...
A schedule that generates the expected order of our isolated environment, when executing a program in virtual time is defined as a correct virtual schedule. ...
doi:10.25560/12681
fatcat:6d3voxdc7zfkzpbrhzktv5axgy
A secure isolation of software activities in tiny scale systems
2015
2015 IEEE International Conference on Pervasive Computing and Communication Workshops (PerCom Workshops)
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The lack of resource isolation makes tiny scale systems prone for accidental errors but in particular vulnerable for a broad variety of malicious software. ...
The thesis introduces a security platform for tiny scale systems that enforces an isolation of software components considering security aspects. ...
Event-driven OSs can be implemented with a sole stack, which reduces memory consumption and simplifies task handling. Tasks are non-preemptive and are scheduled by the OS. ...
doi:10.1109/percomw.2015.7134037
dblp:conf/percom/Stecklina15
fatcat:exjpv5kxrzgczimh2rwjabeere
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