depot/third_party/nixpkgs/doc/hooks/mpi-check-hook.section.md

mpiCheckPhaseHook

This hook can be used to setup a check phase that requires running a MPI application. It detects the used present MPI implementation type and exports the neceesary environment variables to use mpirun and mpiexec in a Nix sandbox.

Example:

  { mpiCheckPhaseHook, mpi, ... }:

  ...

  nativeCheckInputs = [
    openssh
    mpiCheckPhaseHook
  ];