Dan Bonachea
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The PRIF Committee is pleased to announce the publication of the Parallel Runtime Interface for Fortran (PRIF) Specification, Revision 0.8. The latest iteration of this specification represents the efforts of a collaborative design process involving multiple individuals across several institutions. The document is available here: https://doi.org/10.25344/S4Z88F The PRIF specification is governed by a formal PRIF Committee. For more details, see: https://go.lbl.gov/prif-governance The Committee vote to approve the technical content in this revision began on 2026-04-30 and concluded successfully on 2026-05-18. The 7-day committee comment period for cosmetic feedback began on 2026-05-21 and concluded on 2026-05-28 with no comments, and only minor editorial changes by the Editor. See the Change Log in Section 1 of the document for the list of changes relative to the prior revision.
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Multi-Image Parallel Fortran Runtime
The Parallel Runtime Interface for Fortran (PRIF) defines an interface designed for LLVM Flang to target implementations of Fortran's multi-image parallel features.
The current revision of the PRIF specification is here: https://doi.org/10.25344/S4Z88F
Library implementations of PRIF include:
- Caffeine - portable open-source implementation targeting shared- and distributed-memory systems running Linux or macOS