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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](https://go.lbl.gov/caffeine) - portable open-source implementation targeting shared- and distributed-memory systems running Linux or macOS | |