@inproceedings{KraemerSimsekBraunetal., author = {Kr{\"a}mer, Stefan and Simsek, Erol and Braun, J{\"u}rgen and Deubzer, Michael and Stingl, Armin and Hobelsberger, Martin and Mottok, J{\"u}rgen}, title = {Mut zu Fehlern, um die Qualit{\"a}t zu steigern - Fault-Injection zur Steigerung der Zuverl{\"a}ssigkeit}, series = {Tagungsband, 6th Embedded Software Engineering, Kongress 2013, 2. bis 6. Dezember 2013, Sindelfingen}, booktitle = {Tagungsband, 6th Embedded Software Engineering, Kongress 2013, 2. bis 6. Dezember 2013, Sindelfingen}, isbn = {978-3-8343-2408-5}, pages = {577 -- 585}, language = {de} } @inproceedings{MottokKraemerDeubzeretal., author = {Mottok, J{\"u}rgen and Kr{\"a}mer, Stefan and Deubzer, Michael and Hobelsberger, Martin and Martin, Felix}, title = {Hardware Based Tracing of Embedded Multi-Core Systems}, series = {4th Applied Research Conference, 5th July 2014, Ingolstadt}, booktitle = {4th Applied Research Conference, 5th July 2014, Ingolstadt}, isbn = {978-3-8440-2875-1}, language = {en} } @inproceedings{KraemerMottokMeier, author = {Kr{\"a}mer, Stefan and Mottok, J{\"u}rgen and Meier, Hans}, title = {Modifikation des Taskzustandsmodells des LLREF-Schedulers auf einem Dual-Core-Prozessor}, series = {Proceedings of the 2nd Embedded Software Engineering Congress, 8. bis 10. Dezember 2009, Sindelfingen}, booktitle = {Proceedings of the 2nd Embedded Software Engineering Congress, 8. bis 10. Dezember 2009, Sindelfingen}, pages = {628 -- 636}, language = {de} } @inproceedings{KraemerMottokMeier, author = {Kr{\"a}mer, Stefan and Mottok, J{\"u}rgen and Meier, Hans}, title = {Modifikation des Taskzustandsmodells des LLREF-Schedulers auf einem Dual-Core-Prozess}, series = {Proceedings of the 2nd Embedded Software Engineering Congress, 8. bis 10. Dezember 2009, Sindelfingen}, booktitle = {Proceedings of the 2nd Embedded Software Engineering Congress, 8. bis 10. Dezember 2009, Sindelfingen}, pages = {628 -- 636}, language = {de} } @inproceedings{KraemerMottokMeier, author = {Kr{\"a}mer, Stefan and Mottok, J{\"u}rgen and Meier, Hans}, title = {Osek-basierende Implementierung des LLREF-Scheduling-Algorithmus f{\"u}r eine Dual-Core-Architektur}, series = {2. Landshuter Symposium Mikrosystemtechnik, Tagungsband, 24. une 25. Februar 2010, Hochschule Landshut}, booktitle = {2. Landshuter Symposium Mikrosystemtechnik, Tagungsband, 24. une 25. Februar 2010, Hochschule Landshut}, pages = {343 -- 349}, language = {de} } @inproceedings{RaabKraemerMottok, author = {Raab, Peter and Kr{\"a}mer, Stefan and Mottok, J{\"u}rgen}, title = {Cyclic codes and error detection during data processing in embedded software systems}, series = {Proceedings of the 4rd Embedded Software Engineering Congress (ESE), 5.-9. Dezember 2011, Sindelfingen}, booktitle = {Proceedings of the 4rd Embedded Software Engineering Congress (ESE), 5.-9. Dezember 2011, Sindelfingen}, pages = {577 -- 590}, language = {en} } @article{KraemerMottokMeier, author = {Kr{\"a}mer, Stefan and Mottok, J{\"u}rgen and Meier, Hans}, title = {Multi-Core Scheduling in Embedded Systemen, Teil 1}, series = {Hanser Automotive}, journal = {Hanser Automotive}, number = {1-2}, pages = {18 -- 22}, language = {en} } @article{KraemerMottokMeier, author = {Kr{\"a}mer, Stefan and Mottok, J{\"u}rgen and Meier, Hans}, title = {Multi-Core Scheduling in Embedded Systemen, Teil 2}, series = {Hanser Automotive}, journal = {Hanser Automotive}, number = {3-4}, pages = {23 -- 25}, language = {en} } @article{KraemerMottokMeier, author = {Kr{\"a}mer, Stefan and Mottok, J{\"u}rgen and Meier, Hans}, title = {Multi-Core Scheduling in Embedded Systemen, Teil 3}, series = {Hanser Automotive}, journal = {Hanser Automotive}, number = {5-6}, pages = {14 -- 16}, language = {en} } @inproceedings{RaabKraemerMottoketal., author = {Raab, Peter and Kr{\"a}mer, Stefan and Mottok, J{\"u}rgen and Meier, Hans and Racek, Stanislav}, title = {Safe software processing by concurrent execution in a real-time operating system}, series = {16th International Conference on Applied Electronics (AE 2011), 2011, Pilsen, Czech Republic}, booktitle = {16th International Conference on Applied Electronics (AE 2011), 2011, Pilsen, Czech Republic}, pages = {315 -- 319}, abstract = {The requirements for safety-related software systems increases rapidly. To detect arbitrary hardware faults, there are applicable coding mechanism, that add redundancy to the software. In this way it is possible to replace conventional multi-channel hardware and so reduce costs. Arithmetic codes are one possibility of coded processing and are used in this approach. A further approach to increase fault tolerance is the multiple execution of certain critical parts of software. This kind of time redundancy is easily realized by the parallel processing in an operating system. Faults in the program flow can be monitored. No special compilers, that insert additional generated code into the existing program, are required. The usage of multi-core processors would further increase the performance of such multi-channel software systems. In this paper we present the approach of program flow monitoring combined with coded processing, which is encapsulated in a library of coded data types. The program flow monitoring is indirectly realized by means of an operating system.}, language = {en} } @article{RaabKraemerMottoketal., author = {Raab, Peter and Kr{\"a}mer, Stefan and Mottok, J{\"u}rgen and Vavricka, Vlastimil}, title = {Isomorphism between Linear Codes and Arithmetic Codes for Safe Data Processing in Embedded Software Systems}, series = {Computing and Informatics (CAI)}, volume = {33}, journal = {Computing and Informatics (CAI)}, pages = {721 -- 734}, abstract = {We present a transformation rule to convert linear codes into arithmetic codes. Linear codes are usually used for error detection and correction in broadcast and storage systems. In contrast, arithmetic codes are very suitable for protection of software processing in computer systems. This paper shows how to transform linear codes protecting the data stored in a computer system into arithmetic codes safeguarding the operations built on this data. Combination of the advantages of both coding mechanisms will increase the error detection capability in safety critical applications for embedded systems by detection and correction of arbitrary hardware faults.}, language = {en} } @inproceedings{KraemerRaabMottoketal., author = {Kr{\"a}mer, Stefan and Raab, Peter and Mottok, J{\"u}rgen and Racek, Stanislav}, title = {Comparison of Enhanced Markov Models and Discrete Event Simulation}, series = {17th Euromicro Conference on Digital System Design (DSD), 27-29 August 2014, Verona, Italy}, booktitle = {17th Euromicro Conference on Digital System Design (DSD), 27-29 August 2014, Verona, Italy}, doi = {10.1109/DSD.2014.42}, pages = {591 -- 598}, abstract = {In this paper we present simulation and model based approaches for evaluating and validating the temporal and safety relevant properties of software intensive safety-critical real-time embedded systems. A high level reliability model of a safe task execution is described by a continuous-time Markov process, enhanced by the modeling of execution times. It is shown that the behavior - regarding real-time and safety metrics - of this theoretical model can be transferred into an abstract system timing model, which then can be analyzed by a discrete event simulation approach. The verification of the discrete event simulation by Markov models offers the possibility of a holistic approach for reliability analysis combined with schedulability analysis of complex safety-critical multicore real-time systems by the discrete event simulation.}, language = {en} }