FirecREST v2 API boosts scalable HPC resource access

The authors announce FirecREST v2, a redesigned open-source RESTful API that provides programmatic access to HPC resources with significantly improved performance, security, and throughput.

• FirecREST v2 achieves a 100x performance improvement over the previous version, based on a systematic performance testing methodology that identifies bottlenecks in proxy-based APIs with intensive I/O operations, and incorporates key design and architectural changes to enhance security and high-throughput access to HPC systems.
• The work is documented in a 6-page paper with 2 figures, presented at the Cray User Group 2025 conference in New York, USA (May 4–8, 2025), and includes independent peer validation of the performance gains plus a discussion of future improvement opportunities; the paper is available via arXiv (2512.11634) with a pending DataCite DOI.