OPAL_WRAPPER(1)

📦
version 5.0.11 · 15 versions
, in arch rolling

💅 OPAL_WRAPPER(1)

okay so real talk — this is a page from the Open MPI manual, and it's about a little back-end gremlin called opal_wrapper. she's not for you. she's behind the scenes. keep reading bestie 🎀

✨ NAME ✨

opal_wrapper — the back-end Open MPI wrapper command. that's it. that's her whole job description. 🫶

🌸 DESCRIPTION 🌸

okay so first thing's first, and this is important: opal_wrapper is not meant to be called directly by end users. do not @ her. do not run her yourself. 🙈

instead, she gets automatically invoked as the back-end by the Open MPI wrapper commands, the ones you actually know and love, like:

  • mpicc
  • mpicxx
  • mpifort

...plus mpifort's legacy/deprecated aliases mpif77 and mpif90 (yes they're deprecated, yes they're still listed, no we don't talk about it 😭).

and like, depending on your particular Open MPI installation, there might be even more wrapper commands lying around — and/or some installations straight-up renamed the wrapper compilers above so they wouldn't bump into executable name conflicts with other MPI implementations. it's giving "two people showed up in the same fit" energy 💀

so lowkey, you might also have wrapper compilers installed under these names:

  • mpifort.openmpi (and the legacy/deprecated aliases mpif90.openmpi and mpif77.openmpi)
  • mpicxx.openmpi
  • mpicc.openmpi

same vibes, different name tag. iykyk 🦋

🫶 SEE ALSO 🫶

the following may exist depending on your particular Open MPI installation — may being the operative word, so don't come for me if one's missing:

go read those instead, they're literally the main characters 💅

2003-2026, The Open MPI Community

no cap, that's the whole thing. ✨

and that's the tea, bestie 🍓 — this page dropped Sep 11, 2026, straight from the Open MPI manual, so go forth and let the wrapper compilers do their thing while opal_wrapper stays in her lane behind the scenes. slay 💜🧚

📦 where this page comes from