From 3e769e05b4c0bdb0b28c157e10b0f20de782c581 Mon Sep 17 00:00:00 2001
From: Paul Romano <paul.k.romano@gmail.com>
Date: Fri, 23 Apr 2021 13:26:10 -0500
Subject: [PATCH] Update MPI alternatives to use MPICH

---
 .github/workflows/ci.yml | 8 ++++++--
 tools/ci/gha-install.sh  | 2 +-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6b917e5a05..1673af5319 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -95,12 +95,16 @@ jobs:
         shell: bash
         run: |
           sudo apt -y update
-          sudo apt install -y libopenmpi-dev \
+          sudo apt install -y libmpich-dev \
                               libnetcdf-dev \
                               libpnetcdf-dev \
                               libhdf5-serial-dev \
-                              libhdf5-openmpi-dev \
+                              libhdf5-mpich-dev \
                               libeigen3-dev
+          sudo update-alternatives --set mpi /usr/bin/mpicc.mpich
+          sudo update-alternatives --set mpirun /usr/bin/mpirun.mpich
+          sudo update-alternatives --set mpi-x86_64-linux-gnu /usr/include/x86_64-linux-gnu/mpich
+
       -
         name: install
         shell: bash
diff --git a/tools/ci/gha-install.sh b/tools/ci/gha-install.sh
index 2ef4ab9925..8c4762e3e4 100755
--- a/tools/ci/gha-install.sh
+++ b/tools/ci/gha-install.sh
@@ -31,7 +31,7 @@ if [[ $MPI == 'y' ]]; then
 
     export CC=mpicc
     export HDF5_MPI=ON
-    export HDF5_DIR=/usr/lib/x86_64-linux-gnu/hdf5/openmpi
+    export HDF5_DIR=/usr/lib/x86_64-linux-gnu/hdf5/mpich
     pip install --no-binary=h5py h5py
 fi