BigHPC2025: Special Track on Big Data and High-Performance Computing at the ITADATA25 Conference Following the success of the past editions, BigHPC is back! Contributions are welcome from academia and industry, presenting research results on all theoretical and practical aspects standing at the intersection of High-Performance Computing (HPC) and Big Data. The event focuses on contributions to HPC architectures, algorithms, models, and management approaches for large data collections, including data processing, analysis, reporting, data protection, experimental studies, hands-on insights, datasets, and lessons learned. Topics of interest include, but are not limited to: HPC Architectures and systems for big data Parallel and distributed algorithms for big data processing HPC-enabled data analytics High-performance data storage and retrieval systems Performance modeling and evaluation of HPC systems for big data HPC in machine learning and artificial intelligence HPC for scientific computing and simulations HPC in the cloud for big data processing Energy-efficient and green HPC for big data Hybrid classical-quantum computing: integration, benchmarking, and HPC-based emulation Quantum algorithms for machine learning, optimization, and generative models Quantum natural language processing and AI applications Compilation, gate synthesis, and error correction in quantum systems Post-quantum cryptography and security in the quantum era BigHPC25 accepts two different submissions for review, including: - Original research papers (min 6 pages, max 10 pages). This type of contribution should not have been published elsewhere and should not currently be under consideration for another journal, conference, or workshop. Original research papers will be published in the CEUR proceedings and must follow the CEUR-ART style files (1 column) available here. - Extended abstracts (min 2 pages, max 5 pages). This type of contribution may present work in progress or contributions that have already been published or are in preparation for publication. The extended abstracts must follow the CEUR-ART style files (1 column) available here. Manuscripts must be submitted to the "BigHPC" track using the ITADATA submission site. Contributions will be evaluated and selected based on their quality, originality, and relevance. As last year, we are working to provide a journal special issue. Authors of the best original research papers—whether full papers or innovative extended abstracts—will be invited to submit an extended version of their work for evaluation. The details will be announced soon. Important dates Submissions due: June 1st, 2025 Author notification: July 20th, 2025 Camera-ready paper and registration due: August 3rd, 2025 Website https://www.itadata.it/2025/bighpc2025 The BigHPC25 Chairs Alessia Antelmi, University of Turin Massimo Cafaro, Università del Salento Italo Epicoco, Università del Salento Marco Pulimeno, Università del Salento --