Add support for Intel MPI

Author: dalcinl

.github/workflows/ci.yml

@@ -19,6 +19,7 @@ jobs:
         mpi:
           - mpich
           - openmpi
+          - intelmpi
           - msmpi
         os:
           - ubuntu-22.04
@@ -32,18 +33,26 @@ jobs:
             mpi: msmpi
           - os: ubuntu-20.04
             mpi: msmpi
+          - os: macos-12
+            mpi: intelmpi
           - os: macos-12
             mpi: msmpi
+          - os: macos-11
+            mpi: intelmpi
           - os: macos-11
             mpi: msmpi
           - os: windows-2022
             mpi: mpich
           - os: windows-2022
             mpi: openmpi
+          - os: windows-2022
+            mpi: intelmpi
           - os: windows-2019
             mpi: mpich
           - os: windows-2019
             mpi: openmpi
+          - os: windows-2019
+            mpi: intelmpi
 
     steps:
 
@@ -67,6 +76,10 @@ jobs:
       run:  ompi_info
       if:   ${{ matrix.mpi == 'openmpi' }}
 
+    - name: Show MPI info
+      run:  impi_info
+      if:   ${{ matrix.mpi == 'intelmpi' }}
+
     - name: Show MPI info
       run: |
         Write-Host MSMPI_BIN=$Env:MSMPI_BIN
@@ -75,14 +88,23 @@ jobs:
         Write-Host MSMPI_LIB64=$Env:MSMPI_LIB64
       if:   ${{ matrix.mpi == 'msmpi' }}
 
-    - name: Show MPI compilers
+    - name: Show MPI C compiler wrapper
       run: |
         command -v mpicc
         mpicc -show
+      if: ${{ runner.os != 'Windows' }}
+
+    - name: Show MPI C++ compiler wrapper
+      run: |
         command -v mpicxx
         mpicxx -show
-        command -v mpifort
-        mpifort -show
+      if: ${{ runner.os != 'Windows' }}
+
+    - name: Show MPI Fortran compiler wrapper
+      run: |
+        mpifort=$(command -v mpifort || command -v mpifc)
+        command -v $mpifort
+        $mpifort -show
       if: ${{ runner.os != 'Windows' }}
 
     - name: Help MPI executor

README.md

@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        mpi: [ 'mpich', 'openmpi' ]
+        mpi: [ 'mpich', 'openmpi', 'intelmpi']
     name: ${{ matrix.mpi }} example
     steps:
       - name: Checkout
@@ -39,6 +39,14 @@ jobs:
 
 # Available MPI implementations
 
-* Linux: [MPICH](https://www.mpich.org/) and [Open MPI](https://www.open-mpi.org/) (`apt` install).
-* macOS: [MPICH](https://www.mpich.org/) and [Open MPI](https://www.open-mpi.org/) (`brew` install).
-* Windows: [Microsoft MPI](https://docs.microsoft.com/en-us/message-passing-interface/microsoft-mpi).
+* Linux:
+  [MPICH](https://www.mpich.org/),
+  [Open MPI](https://www.open-mpi.org/), and
+  [Intel MPI](https://software.intel.com/intel-mpi-library) (`apt` install).
+
+* macOS:
+  [MPICH](https://www.mpich.org/) and
+  [Open MPI](https://www.open-mpi.org/) (`brew` install).
+
+* Windows:
+  [Microsoft MPI](https://docs.microsoft.com/en-us/message-passing-interface/microsoft-mpi).

setup-mpi.sh

@@ -3,6 +3,31 @@ set -eu
 
 MPI=$(echo "${1:-}" | tr '[:upper:]' '[:lower:]')
 
+setup-apt-intel-oneapi () {
+    apt_repo_url=https://apt.repos.intel.com/
+    gpg_key_url=$apt_repo_url/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB
+    keyring=/usr/share/keyrings/oneapi-archive-keyring.gpg
+    # download the key to system keyring
+    curl -s $gpg_key_url | gpg --dearmor | sudo tee $keyring > /dev/null
+    # add signed entry to apt sources
+    echo "deb [signed-by=${keyring}] ${apt_repo_url}/oneapi all main" | \
+    sudo tee /etc/apt/sources.list.d/oneAPI.list
+    # update list of available packages
+    sudo apt update
+}
+
+setup-env-intel-oneapi () {
+    set +u
+    source /opt/intel/oneapi/setvars.sh
+    set -u
+    echo "${I_MPI_ROOT}/bin" >> $GITHUB_PATH
+    echo "ONEAPI_ROOT=${ONEAPI_ROOT}" >> $GITHUB_ENV
+    echo "I_MPI_ROOT=${I_MPI_ROOT}" >> $GITHUB_ENV
+    echo "FI_PROVIDER_PATH=${FI_PROVIDER_PATH}" >> $GITHUB_ENV
+    echo "LD_LIBRARY_PATH=${LD_LIBRARY_PATH}" >> $GITHUB_ENV
+    echo "PKG_CONFIG_PATH=${PKG_CONFIG_PATH}" >> $GITHUB_ENV
+}
+
 case $(uname) in
 
     Linux)
@@ -16,6 +41,11 @@ case $(uname) in
             openmpi)
                 sudo apt install -y -q openmpi-bin libopenmpi-dev
                 ;;
+            intelmpi)
+                setup-apt-intel-oneapi
+                sudo apt install -y -q intel-oneapi-mpi-devel
+                setup-env-intel-oneapi
+                ;;
             *)
                 echo "Unknown MPI implementation:" $MPI
                 exit 1
@@ -77,6 +107,11 @@ case $MPI in
         ompi_info --all
         echo "::endgroup::"
         ;;
+    intelmpi)
+        echo "::group::Run impi_info -all"
+        impi_info -all
+        echo "::endgroup::"
+        ;;
 esac
 
 if [ $MPI == openmpi ]; then