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IMMORTAL Report Summary

Project ID: 644905
Funded under: H2020-EU.

Periodic Reporting for period 1 - IMMORTAL (Integrated Modelling, Fault Management, Verification and Reliable Design Environment for Cyber-Physical Systems)

Reporting period: 2015-03-01 to 2016-02-29

Summary of the context and overall objectives of the project

In IMMORTAL a consortium of leading European academic and industrial players aim at combining their expertise in developing an integrated, cross-layer modelling based tool framework for fault management, verification and reliable design of dependable cyber-physical systems.

Recently, the world has seen emerging Cyber-Physical System (CPS) modelling frameworks addressing various design aspects such as control, security, verification and validation. However, there have been no considerations for reliability and automated debug (i.e. design error localisation and correction) aspects. The main aim of IMMORTAL is to fill this gap by introducing reliable design and automated system debug into CPS modelling. To reach this aim, the project will develop a cross-layer CPS model spanning analogue mixed-signal circuits, hardware architecture, firmware, operating system and application layers. In addition, a holistic fault model for representing fundamentally different error sources in CPSs (design bugs, wear-out and environmental effects) in a uniform manner will be proposed. Moreover, IMMORTAL plans to develop a fault management infrastructure on top of the reliable design framework that would allow ultra-fast fault detection, isolation and recovery in the emerging many-core based CPS architectures that are expected to be increasingly adopted in the coming years.

As a result, the project will enable the development of dependable CPSs with improved reliability and extended effective life-time, which is a particular concern in emerging nanoelectronics technologies that are becoming increasingly vulnerable to disturbances, ageing and process variations. The tool framework to be developed within IMMORTAL will be evaluated on a clearly specified real-world use-case of a satellite on-board-computer. However, since the results are more general and applicable to many application domains, including avionics, automotive and telecommunication, demonstration of the framework tools will be applied to CPS examples from other domains as well.

Work performed from the beginning of the project to the end of the period covered by the report and main results achieved so far

During the first year of the project, the following main results have been achieved. In the work package WP1 “CPS Modelling”, the tasks of “Cross-layer modelling of CPS for reliability and reasoning engines” and “Reconfiguration modelling” were completed. In the work package WP2 “CPS verification and reasoning engines”, the Milestone M2.1 (“verification, debugging and testing methods developed”) was achieved ahead of the planned schedule. In the work package WP3 “Reliable CPS development”, the significant results achieved during the first period of the project include the development of a SAT-based semi-formal framework for soft error robustness analysis, a gating-aware error-injection methodology and tool, an automated property generation approach for hardware as well as various formal and static analysis methods for estimating and verifying reliability of CPS hardware components. Work in the work package WP4 has started and resulted in the first deliverable D4.1 - “Status on fault management”.

Dissemination activities of IMMORTAL during the first project year include organisation of a workshop at MEDIAN Final Event in November 2016, more than 15 scientific publications and more than 25 presentations.

Progress beyond the state of the art and expected potential impact (including the socio-economic impact and the wider societal implications of the project so far)

IMMORTAL goes beyond state of the art in CPS development in three areas: reliable design, fault management and automated debug.

IMMORTAL addresses the problem of analysing and verifying reliability aspects of the hardware components of CPS. The goal is to develop complete and automated methods for reliability analysis. In addition, high-level reliability models will be developed that will combine the per-component analyses into a system-wide reliability characterisation.

In fault management, the goal is to achieve early fault detection and fast recovery by implementing a cross-layer fault management approach. This enables a graceful degradation environment for the CPS, where the systems’ tolerance to faults and life-time is improved and costs for maintenance are significantly reduced.

Concerning automated debug, IMMORTAL will develop verification engines for CPS with a goal to extend them by automated design error localisation and correction capabilities. Currently, solutions for automated debug in CPSs are missing. Yet, it has been shown by numerous studies that error localisation and correction in digital computing systems consume a major portion of the overall development effort. In CPSs, this problem is going to be even more severe due to the underlying complexity and heterogeneity.

IMMORTAL innovations are expected to lead to the following improvements.
1) Minimisation of the verification effort in CPSs by a factor of 2 by enabling automated debug (error localisation and correction) in such systems. Methods that rely on lightweight models for CPS will be developed therefore, improving the scalability.
2) Speeding up fault detection, isolation and recovery in CPSs by a factor of 4 by implementing a cross-layer approach, a holistic fault model and a new fault management architecture.
3) Graceful degradation: by resumption of correct operation with up to 15% of CPS network resources failed. To be achieved by development of network reconfiguration, fault localisation and resource isolation schemes for CPSs based on many-core networks.
4) Up to 40% reduction in the effort designers put in reliability related tasks by developing an automated and complete sign-off tool.
5) Up to 10% savings in the total area as well as power consumption achieved by optimising hardware protection logic overhead.

These improvements would lead to the following overall expected impacts to future CPSs:
• 30% reduction of development time
• 40% reduction in maintenance costs
This will translate to cheaper yet dependable CPSs for the society.

Related information

Record Number: 190163 / Last updated on: 2016-11-08
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