Project description
Causal-consistent reversible debugging of partially observable concurrent systems
Funded by the Marie Skłodowska-Curie Actions programme, the ReGraDe-CS project aims to address the challenge of reversible grey debugging in concurrent systems, where only part of the source code is accessible. The reversible causal-consistent debugging and replay (RCCDR) approach allows a faulty execution in the production environment to be logged and replayed in a reversible debugger. This enables researchers to explore the logged execution backwards and forwards, tracing the issue back to its cause. However, RCCDR requires full access to the source code of the target programme. To overcome this limitation, the project will seek to adapt RCCDR for use with partially accessible systems. The concept will be investigated both abstractly and concretely. Project outcomes could expand RCCDR applicability, benefiting small- and medium-sized IT enterprises and software developers.
Objective
The project tackles gray debugging of concurrent systems. Gray debugging means debugging systems where only part of the source code is accessible (e.g. the system invokes external services such as Google Maps). Debugging concurrent systems (from multiprocessors to Cloud) is notoriously hard. Reversible Causal-Consistent Debugging and Replay (RCCDR) is an innovative approach to this problem, allowing one to log a faulty execution in production environment and replay it in the debugger. There it can be explored backwards and forwards following causality links from the visible misbehavior to the bug causing it. This approach has been implemented in CauDEr, a debugger for the Erlang language.
Currently, RCCDR requires access to the whole source code of the target program. To enable gray RCCDR we need to answer the following questions:
How can we define RCCDR, and, more generally, reversibility in concurrent systems, in a compositional way, to be able to apply it to systems which are only partially accessible? Are we able to correctly explore backwards and forwards the accessible part? If not, which approximation in the exploration is caused by the missing information about the inaccessible part?
Till now RCCDR has only been explored in the concrete setting of Erlang, and gray RCCDR has never been studied. We plan to study gray RCCDR at two levels:
1) the abstract level of event structures. Abstraction ensures simpler proofs and generality of the results, making them applicable to many languages;
2) the concrete level of Erlang semantics, ensuring applicability in a setting of interest, and allowing to implement it by extending CauDEr and integrating it in the Erlang Solutions environment.
As an outcome we will provide the theory to apply the powerful RCCDR approach to concurrent systems which are only partially accessible, as well as exploit it in practice, in the setting of Erlang. This will also enable interaction with IT SMEs and software developers.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
MAIN PROGRAMME
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Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2022-PF-01
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
40126 Bologna
Italy
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.