OPODIS is an open forum for the exchange of state-of-the-art knowledge concerning distributed computing and distributed computer systems. All aspects of distributed systems are within the scope of OPODIS, including theory, specification, design, performance, and system building. With strong roots in the theory of distributed systems, OPODIS now covers the whole range between the theoretical aspects and practical implementations of distributed systems, as well as experimentation and quantitative assessments. We are especially interested in papers that integrate theory and practice.

Topics of interest include, but are not limited to:

-Distributed computing theory: impossibility results, complexity, game theory
-Distributed algorithms, distributed graph algorithms
-Distributed ledger practice and theory: blockchains and cryptocurrency, decentralised oracles, second-layer protocols
-Security, privacy, accountability and auditability : cryptographic tools applied to distributed computing, cryptographic distributed protocols, trusted execution environments
-Distributed ML: machine learning for distributed systems, distributed architectures and protocols for machine learning, federated learning, decentralised learning, distributed inference
-Distributed data analytics: big data analytics frameworks, data-intensive computing
-Cloud and data centers, cloud and edge computing
-Communication and mobile networks, decentralized systems, and peer-to-peer networks
-Parallelism, concurrency, and multicore systems
-Shared and transactional memory, non-volatile memory, distributed shared memory
-Middleware and operating systems
-Systems and algorithms for distributed storage
-Mobile agents and robots
-Self-*: self-stabilizing, self-organizing, and autonomous systems
-Dependability, fault tolerance, consensus, and consistency models
-Cyber-physical systems: IoT, smart environments
-Formal methods / verification of concurrent / distributed systems
-Concurrent and distributed data structures
-Synchronization

Submissions

Papers are to be submitted electronically through https://crp.info.ucl.ac.be/opodis2025/.

Submissions must be in English, in pdf format.
Submissions must be prepared using the LaTeX style templates for LIPIcs, choosing the A4 paper option.
Length: a submission must not exceed 15 pages, including everything but the references. Unlimited pages are allowed for references.
Paper information: the following information must appear in the first page of the submission:
The title of the paper,
A list of keywords,
An abstract summarizing the contributions of the submission,
Whether or not the paper is eligible for the best student paper award,
The first page is not a cover page and can include the start of the paper's main text.
Appendix: the submission may contain a clearly-marked appendix, which will be read at the discretion of the reviewers. Appendix publication is not guaranteed, and will be decided by the Program Committee.
The submission must contain a clear presentation of the merits of the paper, including discussion of its importance, prior work, and an outline of key technical ideas and methods used to achieve the main claims. All of the ideas necessary for an expert to fully verify the central claims in the submission, including experimental results, should be included in the submission. A submission must report on original research that has not previously appeared as a full paper in a journal or conference with published proceedings. It should not be concurrently submitted to such a journal or conference. Any overlap with a published or concurrently submitted paper must be clearly indicated. The Program Chairs reserve the right to reject submissions that are out of scope, of clearly inferior quality, or that violate the submission guidelines. Each of the remaining papers will undergo a thorough reviewing process.


Publication

OPODIS has post-proceedings published by Leibniz International Proceedings in Informatics (LIPIcs) in gold open access mode. The proceedings become available online, free of charge, after the conference. Preliminary versions of the proceedings will be available to participants at the conference electronically. The camera-ready version of a paper must have the same format and be of the same length as its main part of the submitted version.


Awards

Awards will be given to the best paper and the best student paper (i.e., primarily written by a student). Eligibility for the best student paper award should be clearly indicated on the first page.

Registration and presentation

For every accepted paper at least one author is expected to register (as a regular registration) for the conference and present the work on-site in Iaşi,

IMPORTANT DATES (all dates are "anywhere on earth")

• Abstract registration: Friday, August 22, 2025
• Submission deadline: Friday, August 29, 2025
• Acceptance notification: Wednesday, October 20, 2025
• Final version due: Friday, October 31, 2025
• Conference: Wednesday-Friday, December 3-5, 2025

PROGRAM COMMITTEE

Co-Chairs
Michael Spear (Lehigh University, PA, USA)
Sara Tucci Piergiovanni (CEA LIST, Paris-Saclay University, France)

ORGANIZING COMMITTEE

General Chair
Emanuel Onica (Alexandru Ioan Cuza University of Iasi, Romania)


STEERING COMMITTEE

Hagit Attiya (Technion, Israel)
Alysson Bessani (Universidade de Lisboa, Portugal)
Silvia Bonomi (Sapienza University of Rome, Italy)
Quentin Bramas (University of Strasbourg, France)
Xavier Défago (Science Tokyo, Japan) — chair
Petr Kuznetsov (Telecom Paris, Institut Polytechnique de Paris, France)
Etienne Riviere (Université Catholique de Louvain, Belgium)
Yukiko Yamauchi (Kyushu University, Japan)
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