Library information

MPI_VERSION :: VersionNumber

The supported version of the MPI standard.

External links

• MPI_Get_version man page: OpenMPI, MPICH

MPI_LIBRARY :: MPIImpl

The current MPI implementation: this is determined by

See also

• MPIImpl

MPI_LIBRARY_VERSION :: VersionNumber

The version of the MPI library

MPI_LIBRARY_ABI :: MPIABI

The ABI used by the current MPI implementation.

See also

• MPIABI

MPI_LIBRARY_VERSION_STRING :: String

The full version string provided by the library

External links

• MPI_Get_library_version man page: OpenMPI, MPICH

MPIImpl

An enum corresponding to known MPI implementations

• UnknownMPI: unable to determine MPI implementation
• MPICH: MPICH
• OpenMPI: Open MPI
• MicrosoftMPI: Microsoft MPI
• IntelMPI: Intel MPI
• SpectrimMPI: IBM Spectrum MPI
• MVAPICH: MVAPICH

See also

• MPI_LIBRARY

MPIABI

An enum corresponding to known MPI Application Binary Interfaces (ABI)

• UnknownABI: unable to determine MPI ABI. MPI.jl will attempt to build a small C program to determine the necessary constants and type information.

• MPICHABI: Compatible with MPICH ABI Compatibility Initiative.

• OpenMPIABI: Compatible with Open MPI.

• MicrosftMPIABI: Compatible with Microsoft MPI.

MPI.has_cuda()

Check if the MPI implementation is known to have CUDA support. Currently only Open MPI provides a mechanism to check, so it will return false with other implementations (unless overriden).

This can be overriden by setting the JULIA_MPI_HAS_CUDA environment variable to true or false.

impl, version, abi = identify_implementation()

Attempt to identify the MPI implementation based on MPI_LIBRARY_VERSION_STRING. Returns a triple of values:

• impl: a value of type MPIImpl
• version: a VersionNumber of the library, or nothing if it cannot be determined.
• abi: a value of MPIABI. This can be overridden by the JULIA_MPI_ABI environment variable.

This function is only intended for internal use. Users should use MPI_LIBRARY, MPI_LIBRARY_VERSION or MPI_LIBRARY_ABI.