PMIx Reference RunTime Environment (PRRTE)
PRRTE is the PMIx Reference Run Time Environment. The project is formally referred to in documentation by "PRRTE", and the GitHub repository is "openpmix/prrte". However, we have found that most users do not like typing the two consecutive "r"s in the name. Hence, all of the internal API symbols, environment variables, MCA frameworks, and CLI executables all use the abbreviated "prte" (one "r", not two) for convenience.