MPI.jl provides Julia interface to the Message Passing Interface (MPI).

• The Project Website can be found https://github.com/JuliaParallel/MPI.jl
• The Configuration Manual can be found at https://juliaparallel.github.io/MPI.jl/stable/configuration/

Step 1: Download the MPI.jl

% git clone https://github.com/JuliaParallel/MPI.jl.git

Step 2: Update .bashrc and remember to source your .bashrc again

export CC=`which mpicc`
export FC=`which mpif90`

Step 3: Building MPI.jl

I’m using Intel MPI compiled at /usr/local/ . My Build is something like that

% julia --project -e 'ENV["JULIA_MPI_PATH"]="/usr/local/intel/2018u3/impi/2018.3.222/bin64"; using Pkg; Pkg.build("MPI"; verbose=true)'

Installing known registries into `~/.julia`
######################################################################## 100.0%
Added registry `General` to `~/.julia/registries/General`
Updating registry at `~/.julia/registries/General`
Installed Artifacts ──────────────────── v1.3.0
Installed MPICH_jll ──────────────────── v3.3.2+10
Installed OpenMPI_jll ────────────────── v4.0.2+2
Installed MicrosoftMPI_jll ───────────── v10.1.3+0
Installed CompilerSupportLibraries_jll ─ v0.3.4+0
Installed Requires ───────────────────── v1.1.2
Installed DocStringExtensions ────────── v0.8.3
Installed JLLWrappers ────────────────── v1.2.0
Downloading artifact: MPICH
Downloading artifact: OpenMPI
Downloading artifact: CompilerSupportLibraries
Updating `~/Downloads/MPI.jl/Project.toml`
[ffbed154] + DocStringExtensions v0.8.3
[7cb0a576] + MPICH_jll v3.3.2+10
[9237b28f] + MicrosoftMPI_jll v10.1.3+0
[fe0851c0] + OpenMPI_jll v4.0.2+2
[ae029012] + Requires v1.1.2
Updating `~/Downloads/MPI.jl/Manifest.toml`
[56f22d72] + Artifacts v1.3.0
[e66e0078] + CompilerSupportLibraries_jll v0.3.4+0
[ffbed154] + DocStringExtensions v0.8.3
[692b3bcd] + JLLWrappers v1.2.0
[7cb0a576] + MPICH_jll v3.3.2+10
[9237b28f] + MicrosoftMPI_jll v10.1.3+0
[fe0851c0] + OpenMPI_jll v4.0.2+2
[ae029012] + Requires v1.1.2
[2a0f44e3] + Base64
[ade2ca70] + Dates
[8ba89e20] + Distributed
[b77e0a4c] + InteractiveUtils
[76f85450] + LibGit2
[8f399da3] + Libdl
[56ddb016] + Logging
[d6f4376e] + Markdown
[44cfe95a] + Pkg
[de0858da] + Printf
[3fa0cd96] + REPL
[9a3f8284] + Random
[ea8e919c] + SHA
[9e88b42a] + Serialization
[6462fe0b] + Sockets
[8dfed614] + Test
[cf7118a7] + UUIDs
[4ec0a83e] + Unicode
Building MPI → `~/Downloads/MPI.jl/deps/build.log`
[ Info: using system MPI
┌ Info: Using implementation
│ libmpi = "libmpi"
│ mpiexec_cmd = `/usr/local/intel/2018u3/impi/2018.3.222/bin64/bin/mpiexec`
└ MPI_LIBRARY_VERSION_STRING = "Intel(R) MPI Library 2018 Update 3 for Linux* OS\n"
┌ Info: MPI implementation detected
│ impl = IntelMPI::MPIImpl = 4
│ version = v"2018.3.0"
└ abi = "MPICH"

Step 4: Verify that the binary “mpiexecjl” in the bin directory

Step 5: Usages

% mpiexecjl -n 20 julia script.jl

(mpiexecjl has the same syntax as the mpiexec binary that will be called, but it takes in addition a –project option to call the specific binary associated to the MPI.jl version in the given project. If no –project flag is used, the MPI.jl in the global Julia environment will be used instead.)

References:

1. [solved] Can’t install MPI.jl in julia 1.0.1/0.7.0 on a CENTOS 7.4