diff --git a/.github/workflows/mac_mpich.yml b/.github/workflows/mac_mpich.yml
deleted file mode 100644
index 881e19d16..000000000
--- a/.github/workflows/mac_mpich.yml
+++ /dev/null
@@ -1,172 +0,0 @@
-name: Mac OSX with MPICH
-permissions:
-  contents: read
-  pull-requests: write
-
-on:
-  push:
-    branches: [ master, test_github_actions ]
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - '**/*.jpg'
-      - '**/*.png'
-      - 'docs/*'
-      - 'test/test_installed/*'
-  pull_request:
-    branches: [ master, test_github_actions ]
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - '**/*.jpg'
-      - '**/*.png'
-      - 'docs/*'
-      - 'test/test_installed/*'
-
-env:
-   MPICH_VERSION: 4.3.0
-   AUTOCONF_VERSION: 2.71
-   AUTOMAKE_VERSION: 1.17
-   LIBTOOL_VERSION: 2.5.4
-   M4_VERSION: 1.4.19
-
-jobs:
-    build:
-      runs-on: macos-latest
-      timeout-minutes: 120
-      steps:
-        - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
-        - name: Set up dependencies
-          run: |
-            # brew install gcc
-            # which gcc
-            # gcc --version
-            # which gfortran
-        - name: Clean up git untracked files
-          run: |
-            git clean -fx
-        - name: Build GNU autotools
-          run: |
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/m4/m4-${M4_VERSION}.tar.gz
-            gzip -dc m4-${M4_VERSION}.tar.gz | tar -xf -
-            cd m4-${M4_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/autoconf/autoconf-${AUTOCONF_VERSION}.tar.gz
-            gzip -dc autoconf-${AUTOCONF_VERSION}.tar.gz | tar -xf -
-            cd autoconf-${AUTOCONF_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/automake/automake-${AUTOMAKE_VERSION}.tar.gz
-            gzip -dc automake-${AUTOMAKE_VERSION}.tar.gz | tar -xf -
-            cd automake-${AUTOMAKE_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/libtool/libtool-${LIBTOOL_VERSION}.tar.gz
-            gzip -dc libtool-${LIBTOOL_VERSION}.tar.gz | tar -xf -
-            cd libtool-${LIBTOOL_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build MPICH
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            rm -rf MPICH ; mkdir MPICH ; cd MPICH
-            wget -q https://www.mpich.org/static/downloads/${MPICH_VERSION}/mpich-${MPICH_VERSION}.tar.gz
-            gzip -dc mpich-${MPICH_VERSION}.tar.gz | tar -xf -
-            cd mpich-${MPICH_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/MPICH \
-                        --silent \
-                        --enable-romio \
-                        --with-file-system=ufs \
-                        --with-device=ch3:sock \
-                        --disable-fortran \
-                        CC=gcc
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build PnetCDF
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            m4 --version
-            autoconf --version
-            automake --version
-            libtool --version
-            autoreconf -i
-            mkdir -p pnetcdf_output
-            ./configure --enable-option-checking=fatal \
-                        pnc_ac_debug=yes \
-                        --enable-burst_buffering \
-                        --enable-subfiling \
-                        --enable-thread-safe \
-                        --with-pthread \
-                        --disable-fortran \
-                        --with-mpi=${GITHUB_WORKSPACE}/MPICH \
-                        TESTOUTDIR=${GITHUB_WORKSPACE}/pnetcdf_output
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 tests
-        - name: Print config.log
-          if: ${{ always() }}
-          run: |
-            cat ${GITHUB_WORKSPACE}/config.log
-        - name: make check
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 check
-        - name: Print test log files
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            fname=`find src test examples benchmarks -type f -name "*.log"`
-            for f in $fname ; do \
-               bname=`basename $f` ; \
-               if test "x$bname" != xconfig.log ; then \
-                  echo "-------- dump $f ----------------------------" ; \
-                  cat $f ; \
-               fi ; \
-            done
-        - name: make ptests
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 ptests
-        - name: make distcheck
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -j 8 distcheck DISTCHECK_CONFIGURE_FLAGS="--silent --with-mpi=${GITHUB_WORKSPACE}/MPICH"
-        - name: make install
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            prefix_path=${GITHUB_WORKSPACE}/pnetcdf_install
-            echo "---- test make install prefix=${prefix_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path}
-            test/tst_install.sh ${prefix_path}
-            prefix_path="/pnetcdf_install"
-            destdir_path=${GITHUB_WORKSPACE}/inst
-            echo "---- test make install prefix=${prefix_path} DESTDIR=${destdir_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path} DESTDIR=${destdir_path}
-            test/tst_install.sh ${prefix_path} ${destdir_path}
-        - name: Cleanup
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 distclean
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_output
-            rm -rf ${GITHUB_WORKSPACE}/MPICH
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_install
-            rm -rf ${GITHUB_WORKSPACE}/inst
-
diff --git a/.github/workflows/mac_mpich_lustre.yml b/.github/workflows/mac_mpich_lustre.yml
deleted file mode 100644
index 618dff32c..000000000
--- a/.github/workflows/mac_mpich_lustre.yml
+++ /dev/null
@@ -1,173 +0,0 @@
-name: Mac OSX with MPICH (MIMIC_LUSTRE)
-permissions:
-  contents: read
-  pull-requests: write
-
-on:
-  push:
-    branches: [ master, test_github_actions ]
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - '**/*.jpg'
-      - '**/*.png'
-      - 'docs/*'
-      - 'test/test_installed/*'
-  pull_request:
-    branches: [ master, test_github_actions ]
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - '**/*.jpg'
-      - '**/*.png'
-      - 'docs/*'
-      - 'test/test_installed/*'
-
-env:
-   MPICH_VERSION: 4.3.0
-   AUTOCONF_VERSION: 2.71
-   AUTOMAKE_VERSION: 1.17
-   LIBTOOL_VERSION: 2.5.4
-   M4_VERSION: 1.4.19
-
-jobs:
-    build:
-      runs-on: macos-latest
-      timeout-minutes: 120
-      steps:
-        - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
-        - name: Set up dependencies
-          run: |
-            # brew install gcc
-            # which gcc
-            # gcc --version
-            # which gfortran
-        - name: Clean up git untracked files
-          run: |
-            git clean -fx
-        - name: Build GNU autotools
-          run: |
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/m4/m4-${M4_VERSION}.tar.gz
-            gzip -dc m4-${M4_VERSION}.tar.gz | tar -xf -
-            cd m4-${M4_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/autoconf/autoconf-${AUTOCONF_VERSION}.tar.gz
-            gzip -dc autoconf-${AUTOCONF_VERSION}.tar.gz | tar -xf -
-            cd autoconf-${AUTOCONF_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/automake/automake-${AUTOMAKE_VERSION}.tar.gz
-            gzip -dc automake-${AUTOMAKE_VERSION}.tar.gz | tar -xf -
-            cd automake-${AUTOMAKE_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/libtool/libtool-${LIBTOOL_VERSION}.tar.gz
-            gzip -dc libtool-${LIBTOOL_VERSION}.tar.gz | tar -xf -
-            cd libtool-${LIBTOOL_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build MPICH
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            rm -rf MPICH ; mkdir MPICH ; cd MPICH
-            wget -q https://www.mpich.org/static/downloads/${MPICH_VERSION}/mpich-${MPICH_VERSION}.tar.gz
-            gzip -dc mpich-${MPICH_VERSION}.tar.gz | tar -xf -
-            cd mpich-${MPICH_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/MPICH \
-                        --silent \
-                        --enable-romio \
-                        --with-file-system=ufs \
-                        --with-device=ch3:sock \
-                        --disable-fortran \
-                        CC=gcc
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build PnetCDF with MIMIC_LUSTRE
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            m4 --version
-            autoconf --version
-            automake --version
-            libtool --version
-            autoreconf -i
-            mkdir -p pnetcdf_output
-            ./configure --enable-option-checking=fatal \
-                        pnc_ac_debug=yes \
-                        --enable-burst_buffering \
-                        --enable-subfiling \
-                        --enable-thread-safe \
-                        --with-pthread \
-                        --disable-fortran \
-                        --with-mpi=${GITHUB_WORKSPACE}/MPICH \
-                        TESTOUTDIR=${GITHUB_WORKSPACE}/pnetcdf_output \
-                        MIMIC_LUSTRE=yes
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 tests
-        - name: Print config.log
-          if: ${{ always() }}
-          run: |
-            cat ${GITHUB_WORKSPACE}/config.log
-        - name: make check
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 check
-        - name: Print test log files
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            fname=`find src test examples benchmarks -type f -name "*.log"`
-            for f in $fname ; do \
-               bname=`basename $f` ; \
-               if test "x$bname" != xconfig.log ; then \
-                  echo "-------- dump $f ----------------------------" ; \
-                  cat $f ; \
-               fi ; \
-            done
-        - name: make ptests
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 ptests
-        - name: make distcheck
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -j 8 distcheck DISTCHECK_CONFIGURE_FLAGS="--silent --with-mpi=${GITHUB_WORKSPACE}/MPICH"
-        - name: make install
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            prefix_path=${GITHUB_WORKSPACE}/pnetcdf_install
-            echo "---- test make install prefix=${prefix_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 -j8 install prefix=${prefix_path}
-            test/tst_install.sh ${prefix_path}
-            prefix_path="/pnetcdf_install"
-            destdir_path=${GITHUB_WORKSPACE}/inst
-            echo "---- test make install prefix=${prefix_path} DESTDIR=${destdir_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 -j8 install prefix=${prefix_path} DESTDIR=${destdir_path}
-            test/tst_install.sh ${prefix_path} ${destdir_path}
-        - name: Cleanup
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 distclean
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_output
-            rm -rf ${GITHUB_WORKSPACE}/MPICH
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_install
-            rm -rf ${GITHUB_WORKSPACE}/inst
-
diff --git a/.github/workflows/mac_openmpi.yml b/.github/workflows/mac_openmpi.yml
deleted file mode 100644
index 8ba1e0c33..000000000
--- a/.github/workflows/mac_openmpi.yml
+++ /dev/null
@@ -1,174 +0,0 @@
-name: Mac OSX with OpenMPI
-permissions:
-  contents: read
-  pull-requests: write
-
-on:
-  push:
-    branches: [ master, test_github_actions ]
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - '**/*.jpg'
-      - '**/*.png'
-      - 'docs/*'
-      - 'test/test_installed/*'
-  pull_request:
-    branches: [ master, test_github_actions ]
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - '**/*.jpg'
-      - '**/*.png'
-      - 'docs/*'
-      - 'test/test_installed/*'
-
-env:
-   OPENMPI_VERSION: 5.0.8
-   AUTOCONF_VERSION: 2.71
-   AUTOMAKE_VERSION: 1.17
-   LIBTOOL_VERSION: 2.5.4
-   M4_VERSION: 1.4.19
-
-jobs:
-    build:
-      runs-on: macos-latest
-      timeout-minutes: 120
-      steps:
-        - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
-        - name: Set up dependencies
-          run: |
-            # brew install gcc
-            # which gcc
-            # gcc --version
-            # which gfortran
-        - name: Clean up git untracked files
-          run: |
-            git clean -fx
-        - name: Build GNU autotools
-          run: |
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/m4/m4-${M4_VERSION}.tar.gz
-            gzip -dc m4-${M4_VERSION}.tar.gz | tar -xf -
-            cd m4-${M4_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/autoconf/autoconf-${AUTOCONF_VERSION}.tar.gz
-            gzip -dc autoconf-${AUTOCONF_VERSION}.tar.gz | tar -xf -
-            cd autoconf-${AUTOCONF_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/automake/automake-${AUTOMAKE_VERSION}.tar.gz
-            gzip -dc automake-${AUTOMAKE_VERSION}.tar.gz | tar -xf -
-            cd automake-${AUTOMAKE_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/libtool/libtool-${LIBTOOL_VERSION}.tar.gz
-            gzip -dc libtool-${LIBTOOL_VERSION}.tar.gz | tar -xf -
-            cd libtool-${LIBTOOL_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build OPENMPI
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            rm -rf OPENMPI ; mkdir OPENMPI ; cd OPENMPI
-            VER_MAJOR=${OPENMPI_VERSION%.*}
-            wget -q https://download.open-mpi.org/release/open-mpi/v${VER_MAJOR}/openmpi-${OPENMPI_VERSION}.tar.gz
-            gzip -dc openmpi-${OPENMPI_VERSION}.tar.gz | tar -xf -
-            cd openmpi-${OPENMPI_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/OPENMPI \
-                        --silent \
-                        --with-io-romio-flags="--with-file-system=ufs" \
-                        --with-hwloc=internal \
-                        --with-pmix=internal \
-                        --with-libevent=internal \
-                        --disable-mpi-fortran \
-                        CC=gcc
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build PnetCDF
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            m4 --version
-            autoconf --version
-            automake --version
-            libtool --version
-            autoreconf -i
-            mkdir -p pnetcdf_output
-            ./configure --enable-option-checking=fatal \
-                        pnc_ac_debug=yes \
-                        --enable-burst_buffering \
-                        --enable-subfiling \
-                        --enable-thread-safe \
-                        --with-pthread \
-                        --disable-fortran \
-                        --with-mpi=${GITHUB_WORKSPACE}/OPENMPI \
-                        TESTOUTDIR=${GITHUB_WORKSPACE}/pnetcdf_output
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 tests
-        - name: Print config.log
-          if: ${{ always() }}
-          run: |
-            cat ${GITHUB_WORKSPACE}/config.log
-        - name: make check
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 check
-        - name: Print test log files
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            fname=`find src test examples benchmarks -type f -name "*.log"`
-            for f in $fname ; do \
-               bname=`basename $f` ; \
-               if test "x$bname" != xconfig.log ; then \
-                  echo "-------- dump $f ----------------------------" ; \
-                  cat $f ; \
-               fi ; \
-            done
-        - name: make ptests
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 ptests
-        - name: make distcheck
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -j 8 distcheck DISTCHECK_CONFIGURE_FLAGS="--silent --with-mpi=${GITHUB_WORKSPACE}/OPENMPI"
-        - name: make install
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            prefix_path=${GITHUB_WORKSPACE}/pnetcdf_install
-            echo "---- test make install prefix=${prefix_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path}
-            test/tst_install.sh ${prefix_path}
-            prefix_path="/pnetcdf_install"
-            destdir_path=${GITHUB_WORKSPACE}/inst
-            echo "---- test make install prefix=${prefix_path} DESTDIR=${destdir_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path} DESTDIR=${destdir_path}
-            test/tst_install.sh ${prefix_path} ${destdir_path}
-        - name: Cleanup
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 distclean
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_output
-            rm -rf ${GITHUB_WORKSPACE}/OPENMPI
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_install
-            rm -rf ${GITHUB_WORKSPACE}/inst
-
diff --git a/.github/workflows/mac_openmpi_lustre.yml b/.github/workflows/mac_openmpi_lustre.yml
deleted file mode 100644
index aaca1e014..000000000
--- a/.github/workflows/mac_openmpi_lustre.yml
+++ /dev/null
@@ -1,175 +0,0 @@
-name: Mac OSX with OpenMPI (MIMIC_LUSTRE)
-permissions:
-  contents: read
-  pull-requests: write
-
-on:
-  push:
-    branches: [ master, test_github_actions ]
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - '**/*.jpg'
-      - '**/*.png'
-      - 'docs/*'
-      - 'test/test_installed/*'
-  pull_request:
-    branches: [ master, test_github_actions ]
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - '**/*.jpg'
-      - '**/*.png'
-      - 'docs/*'
-      - 'test/test_installed/*'
-
-env:
-   OPENMPI_VERSION: 5.0.8
-   AUTOCONF_VERSION: 2.71
-   AUTOMAKE_VERSION: 1.17
-   LIBTOOL_VERSION: 2.5.4
-   M4_VERSION: 1.4.19
-
-jobs:
-    build:
-      runs-on: macos-latest
-      timeout-minutes: 120
-      steps:
-        - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
-        - name: Set up dependencies
-          run: |
-            # brew install gcc
-            # which gcc
-            # gcc --version
-            # which gfortran
-        - name: Clean up git untracked files
-          run: |
-            git clean -fx
-        - name: Build GNU autotools
-          run: |
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/m4/m4-${M4_VERSION}.tar.gz
-            gzip -dc m4-${M4_VERSION}.tar.gz | tar -xf -
-            cd m4-${M4_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/autoconf/autoconf-${AUTOCONF_VERSION}.tar.gz
-            gzip -dc autoconf-${AUTOCONF_VERSION}.tar.gz | tar -xf -
-            cd autoconf-${AUTOCONF_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/automake/automake-${AUTOMAKE_VERSION}.tar.gz
-            gzip -dc automake-${AUTOMAKE_VERSION}.tar.gz | tar -xf -
-            cd automake-${AUTOMAKE_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/libtool/libtool-${LIBTOOL_VERSION}.tar.gz
-            gzip -dc libtool-${LIBTOOL_VERSION}.tar.gz | tar -xf -
-            cd libtool-${LIBTOOL_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build OPENMPI
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            rm -rf OPENMPI ; mkdir OPENMPI ; cd OPENMPI
-            VER_MAJOR=${OPENMPI_VERSION%.*}
-            wget -q https://download.open-mpi.org/release/open-mpi/v${VER_MAJOR}/openmpi-${OPENMPI_VERSION}.tar.gz
-            gzip -dc openmpi-${OPENMPI_VERSION}.tar.gz | tar -xf -
-            cd openmpi-${OPENMPI_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/OPENMPI \
-                        --silent \
-                        --with-io-romio-flags="--with-file-system=ufs" \
-                        --with-hwloc=internal \
-                        --with-pmix=internal \
-                        --with-libevent=internal \
-                        --disable-mpi-fortran \
-                        CC=gcc
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build PnetCDF (MIMIC_LUSTRE)
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            m4 --version
-            autoconf --version
-            automake --version
-            libtool --version
-            autoreconf -i
-            mkdir -p pnetcdf_output
-            ./configure --enable-option-checking=fatal \
-                        pnc_ac_debug=yes \
-                        --enable-burst_buffering \
-                        --enable-subfiling \
-                        --enable-thread-safe \
-                        --with-pthread \
-                        --disable-fortran \
-                        --with-mpi=${GITHUB_WORKSPACE}/OPENMPI \
-                        TESTOUTDIR=${GITHUB_WORKSPACE}/pnetcdf_output \
-                        MIMIC_LUSTRE=yes
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 tests
-        - name: Print config.log
-          if: ${{ always() }}
-          run: |
-            cat ${GITHUB_WORKSPACE}/config.log
-        - name: make check
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 check
-        - name: Print test log files
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            fname=`find src test examples benchmarks -type f -name "*.log"`
-            for f in $fname ; do \
-               bname=`basename $f` ; \
-               if test "x$bname" != xconfig.log ; then \
-                  echo "-------- dump $f ----------------------------" ; \
-                  cat $f ; \
-               fi ; \
-            done
-        - name: make ptests
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 ptests
-        - name: make distcheck
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -j 8 distcheck DISTCHECK_CONFIGURE_FLAGS="--silent --with-mpi=${GITHUB_WORKSPACE}/OPENMPI"
-        - name: make install
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            prefix_path=${GITHUB_WORKSPACE}/pnetcdf_install
-            echo "---- test make install prefix=${prefix_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path}
-            test/tst_install.sh ${prefix_path}
-            prefix_path="/pnetcdf_install"
-            destdir_path=${GITHUB_WORKSPACE}/inst
-            echo "---- test make install prefix=${prefix_path} DESTDIR=${destdir_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path} DESTDIR=${destdir_path}
-            test/tst_install.sh ${prefix_path} ${destdir_path}
-        - name: Cleanup
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 distclean
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_output
-            rm -rf ${GITHUB_WORKSPACE}/OPENMPI
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_install
-            rm -rf ${GITHUB_WORKSPACE}/inst
-
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 000000000..5ab857b21
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,220 @@
+# Test Combinations of Ubuntu/MacOSX, MPICH/OpenMPI, and UFS/Lustre
+name: CI - OS and MPI
+
+permissions:
+  contents: read
+  pull-requests: write
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - '**/*.md'
+      - '**/*.txt'
+      - '**/*.1'
+      - '**/*.jpg'
+      - '**/*.png'
+      - 'docs/*'
+      - 'test/test_installed/*'
+  pull_request:
+    branches: [ master ]
+    paths-ignore:
+      - '**/*.md'
+      - '**/*.txt'
+      - '**/*.1'
+      - '**/*.jpg'
+      - '**/*.png'
+      - 'docs/*'
+      - 'test/test_installed/*'
+
+env:
+   LIBTOOL_VERSION: 2.5.4
+   MPICH_LATEST: 4.3.2
+   OPENMPI_LATEST: 5.0.9
+
+jobs:
+    build:
+      strategy:
+        fail-fast: false # This disables the default cancel-on-failure behavior
+        matrix:
+          os: [ubuntu-latest, macos-latest]
+          mpi_vendor: [ MPICH, OpenMPI ]
+          fstype: [ ufs, mimic_lustre ]
+
+      runs-on: ${{ matrix.os }}
+      timeout-minutes: 120
+
+      steps:
+        - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
+
+        - name: Install autotools
+          run: |
+            set -x
+            if test ${{ matrix.os }} == ubuntu-latest ; then
+                sudo apt-get update
+                sudo apt-get install autoconf
+                sudo apt-get install automake
+                sudo apt-get install m4
+
+                # sudo apt-get install libtool libtool-bin
+                wget -q https://ftp.gnu.org/gnu/libtool/libtool-${LIBTOOL_VERSION}.tar.gz
+                gzip -dc libtool-${LIBTOOL_VERSION}.tar.gz | tar -xf -
+                cd libtool-${LIBTOOL_VERSION}
+                ./configure --prefix=/usr --silent
+                sudo make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
+                sudo make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
+            else
+                brew update
+                brew install coreutils
+                brew install autoconf
+                brew install automake
+                brew install libtool
+                export PATH="/opt/homebrew/opt/libtool/libexec/gnubin:${PATH}"
+                brew list m4 || brew install m4
+            fi
+            which autoconf
+            autoconf --version
+            which automake
+            automake --version
+            which libtool
+            libtool --version
+            which m4
+            m4 --version
+
+        - name: Install MPI compiler vendor - ${{ matrix.mpi_vendor }}
+          run: |
+            set -x
+            if test "${{ matrix.os }}" = "macos-latest" ; then
+                # Must reinstall gcc to get gfortran installed
+                brew reinstall gcc
+                which gcc
+                gcc --version
+                which gfortran
+                gfortran --version
+            fi
+            if test "${{ matrix.mpi_vendor }}" = "MPICH" ; then
+                # MPICH versions older than 4.2.2 do not support the MPI large
+                # count feature.
+                echo "Install MPICH ${MPICH_LATEST} in ${GITHUB_WORKSPACE}/MPI"
+                wget -q https://www.mpich.org/static/downloads/${MPICH_LATEST}/mpich-${MPICH_LATEST}.tar.gz
+                gzip -dc mpich-${MPICH_LATEST}.tar.gz | tar -xf -
+                cd mpich-${MPICH_LATEST}
+                ./configure --prefix=${GITHUB_WORKSPACE}/MPI \
+                            --silent \
+                            --enable-romio \
+                            --with-file-system=ufs \
+                            --with-device=ch3:sock \
+                            --enable-fortran \
+                            CC=gcc FC=gfortran \
+                             FFLAGS=-fallow-argument-mismatch \
+                            FCFLAGS=-fallow-argument-mismatch
+                make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
+                make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
+            else # OpenMPI
+                echo "Install OPENMPI ${OPENMPI_LATEST} in ${GITHUB_WORKSPACE}/MPI"
+                VER_MAJOR=${OPENMPI_LATEST%.*}
+                wget -q https://download.open-mpi.org/release/open-mpi/v${VER_MAJOR}/openmpi-${OPENMPI_LATEST}.tar.gz
+                gzip -dc openmpi-${OPENMPI_LATEST}.tar.gz | tar -xf -
+                cd openmpi-${OPENMPI_LATEST}
+                if test "${{ matrix.os }}" = "macos-latest" ; then
+                   # When built on MacOS, additional configure options are required.
+                   EXTRA_OPTS="--with-hwloc=internal --with-pmix=internal --with-libevent=internal"
+                fi
+                ./configure --prefix=${GITHUB_WORKSPACE}/MPI \
+                            --silent \
+                            --with-io-romio-flags="--with-file-system=ufs" \
+                            ${EXTRA_OPTS} \
+                            CC=gcc \
+                            FC=gfortran \
+                            FCFLAGS=-fallow-argument-mismatch
+                make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
+                make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
+            fi
+
+        - name: Clean up git untracked files
+          run: |
+            git clean -fx
+
+        - name: Build PnetCDF - ${{ matrix.fstype }}
+          run: |
+            set -x
+            cd ${GITHUB_WORKSPACE}
+            if test ${{ matrix.os }} == macos-latest ; then
+                export PATH="/opt/homebrew/opt/libtool/libexec/gnubin:${PATH}"
+            fi
+            which autoconf
+            autoconf --version
+            which automake
+            automake --version
+            which libtool
+            libtool --version
+            which m4
+            m4 --version
+            autoreconf -i
+            mkdir -p ${GITHUB_WORKSPACE}/pnetcdf_output
+            if test ${{ matrix.fstype }} == mimic_lustre ; then
+                export MIMIC_LUSTRE=yes
+            fi
+            ./configure --prefix=${GITHUB_WORKSPACE}/PnetCDF \
+                        --enable-option-checking=fatal \
+                        pnc_ac_debug=yes \
+                        --enable-burst_buffering \
+                        --enable-subfiling \
+                        --enable-thread-safe \
+                        --with-pthread \
+                        --with-mpi=${GITHUB_WORKSPACE}/MPI \
+                        TESTOUTDIR=${GITHUB_WORKSPACE}/pnetcdf_output
+            make -s LIBTOOLFLAGS=--silent V=1 -j 8 tests
+
+        - name: Print config.log
+          if: ${{ always() }}
+          run: |
+            cat ${GITHUB_WORKSPACE}/config.log
+
+        - name: make check
+          run: |
+            cd ${GITHUB_WORKSPACE}
+            make -s LIBTOOLFLAGS=--silent V=1 check
+
+        - name: Print test log files
+          if: ${{ always() }}
+          run: |
+            cd ${GITHUB_WORKSPACE}
+            fname=`find src test examples benchmarks -type f -name "*.log"`
+            for f in $fname ; do \
+               bname=`basename $f` ; \
+               if test "x$bname" != xconfig.log ; then \
+                  echo "-------- dump $f ----------------------------" ; \
+                  cat $f ; \
+               fi ; \
+            done
+
+        - name: make ptests
+          run: |
+            cd ${GITHUB_WORKSPACE}
+            make -s LIBTOOLFLAGS=--silent V=1 ptests
+
+        - name: make distcheck
+          run: |
+            cd ${GITHUB_WORKSPACE}
+            make -j 8 distcheck DISTCHECK_CONFIGURE_FLAGS="--silent --with-mpi=${GITHUB_WORKSPACE}/MPI"
+
+        - name: make install
+          run: |
+            set -x
+            cd ${GITHUB_WORKSPACE}
+            prefix_path=${GITHUB_WORKSPACE}/pnetcdf_install
+            echo "---- test make install prefix=${prefix_path}"
+            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path}
+            test/tst_install.sh ${prefix_path}
+            prefix_path="/pnetcdf_install"
+            destdir_path=${GITHUB_WORKSPACE}/inst
+            echo "---- test make install prefix=${prefix_path} DESTDIR=${destdir_path}"
+            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path} DESTDIR=${destdir_path}
+            test/tst_install.sh ${prefix_path} ${destdir_path}
+
+        - name: Cleanup
+          if: ${{ always() }}
+          run: |
+            cd ${GITHUB_WORKSPACE}
+            make -s LIBTOOLFLAGS=--silent V=1 distclean
diff --git a/.github/workflows/ubuntu_mpich.yml b/.github/workflows/ubuntu_mpich.yml
deleted file mode 100644
index 237f2b262..000000000
--- a/.github/workflows/ubuntu_mpich.yml
+++ /dev/null
@@ -1,186 +0,0 @@
-name: ubuntu_mpich
-permissions:
-  contents: read
-  pull-requests: write
-
-on:
-  push:
-    branches: master
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - 'docs/*'
-      - 'test/test_installed/*'
-  pull_request:
-    branches: master
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - 'docs/*'
-      - 'test/test_installed/*'
-
-env:
-   MPICH_VERSION: 4.3.0
-   AUTOCONF_VERSION: 2.71
-   AUTOMAKE_VERSION: 1.17
-   LIBTOOL_VERSION: 2.5.4
-   M4_VERSION: 1.4.19
-
-jobs:
-    build:
-      runs-on: ubuntu-latest
-      timeout-minutes: 120
-      steps:
-        - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
-        - name: Set up dependencies
-          run: |
-            sudo apt-get update
-            # install gfortran
-            version=12
-            sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-            sudo apt-get update
-            sudo apt-get install -y gcc-${version} gfortran-${version}
-            sudo update-alternatives \
-              --install /usr/bin/gcc gcc /usr/bin/gcc-${version} 100 \
-              --slave /usr/bin/gfortran gfortran /usr/bin/gfortran-${version} \
-              --slave /usr/bin/gcov gcov /usr/bin/gcov-${version}
-            echo "---- gcc/gfortran version ------------------------------"
-            which gcc
-            which gfortran
-            gcc --version
-            gfortran --version
-        - name: Clean up git untracked files
-          run: |
-            git clean -fx
-        - name: Build GNU autotools
-          run: |
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/m4/m4-${M4_VERSION}.tar.gz
-            gzip -dc m4-${M4_VERSION}.tar.gz | tar -xf -
-            cd m4-${M4_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/autoconf/autoconf-${AUTOCONF_VERSION}.tar.gz
-            gzip -dc autoconf-${AUTOCONF_VERSION}.tar.gz | tar -xf -
-            cd autoconf-${AUTOCONF_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/automake/automake-${AUTOMAKE_VERSION}.tar.gz
-            gzip -dc automake-${AUTOMAKE_VERSION}.tar.gz | tar -xf -
-            cd automake-${AUTOMAKE_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/libtool/libtool-${LIBTOOL_VERSION}.tar.gz
-            gzip -dc libtool-${LIBTOOL_VERSION}.tar.gz | tar -xf -
-            cd libtool-${LIBTOOL_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build MPICH
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            echo "Install MPICH ${MPICH_VERSION} in ${GITHUB_WORKSPACE}/MPICH"
-            rm -rf MPICH ; mkdir MPICH ; cd MPICH
-            # git clone -q https://github.com/pmodels/mpich.git
-            # cd mpich
-            # git submodule update --init
-            # ./autogen.sh
-            wget -q https://www.mpich.org/static/downloads/${MPICH_VERSION}/mpich-${MPICH_VERSION}.tar.gz
-            gzip -dc mpich-${MPICH_VERSION}.tar.gz | tar -xf -
-            cd mpich-${MPICH_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/MPICH \
-                        --silent \
-                        --enable-romio \
-                        --with-file-system=ufs \
-                        --with-device=ch3:sock \
-                        --enable-fortran \
-                        CC=gcc FC=gfortran \
-                        FFLAGS=-fallow-argument-mismatch \
-                        FCFLAGS=-fallow-argument-mismatch
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build PnetCDF
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            m4 --version
-            autoconf --version
-            automake --version
-            libtool --version
-            autoreconf -i
-            mkdir -p /tmp/pnetcdf_output
-            ./configure --prefix=${GITHUB_WORKSPACE}/PnetCDF \
-                        --enable-option-checking=fatal \
-                        pnc_ac_debug=yes \
-                        --enable-burst_buffering \
-                        --enable-subfiling \
-                        --enable-thread-safe \
-                        --with-pthread \
-                        --with-mpi=${GITHUB_WORKSPACE}/MPICH \
-                        TESTOUTDIR=/tmp/pnetcdf_output
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 tests
-        - name: Print config.log
-          if: ${{ always() }}
-          run: |
-            cat ${GITHUB_WORKSPACE}/config.log
-        - name: make check
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 check
-        - name: Print test log files
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            fname=`find src test examples benchmarks -type f -name "*.log"`
-            for f in $fname ; do \
-               bname=`basename $f` ; \
-               if test "x$bname" != xconfig.log ; then \
-                  echo "-------- dump $f ----------------------------" ; \
-                  cat $f ; \
-               fi ; \
-            done
-        - name: make ptests
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 ptests
-        - name: make distcheck
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -j 8 distcheck DISTCHECK_CONFIGURE_FLAGS="--silent --with-mpi=${GITHUB_WORKSPACE}/MPICH"
-        - name: make install
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            prefix_path=${GITHUB_WORKSPACE}/pnetcdf_install
-            echo "---- test make install prefix=${prefix_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path}
-            test/tst_install.sh ${prefix_path}
-            prefix_path="/pnetcdf_install"
-            destdir_path=${GITHUB_WORKSPACE}/inst
-            echo "---- test make install prefix=${prefix_path} DESTDIR=${destdir_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path} DESTDIR=${destdir_path}
-            test/tst_install.sh ${prefix_path} ${destdir_path}
-        - name: Cleanup
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 distclean
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_output
-            rm -rf ${GITHUB_WORKSPACE}/MPICH
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_install
-            rm -rf ${GITHUB_WORKSPACE}/inst
-
diff --git a/.github/workflows/ubuntu_mpich_lustre.yml b/.github/workflows/ubuntu_mpich_lustre.yml
deleted file mode 100644
index ac4014b36..000000000
--- a/.github/workflows/ubuntu_mpich_lustre.yml
+++ /dev/null
@@ -1,187 +0,0 @@
-name: ubuntu_mpich (MIMIC_LUSTRE)
-permissions:
-  contents: read
-  pull-requests: write
-
-on:
-  push:
-    branches: master
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - 'docs/*'
-      - 'test/test_installed/*'
-  pull_request:
-    branches: master
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - 'docs/*'
-      - 'test/test_installed/*'
-
-env:
-   MPICH_VERSION: 4.3.0
-   AUTOCONF_VERSION: 2.71
-   AUTOMAKE_VERSION: 1.17
-   LIBTOOL_VERSION: 2.5.4
-   M4_VERSION: 1.4.19
-
-jobs:
-    build:
-      runs-on: ubuntu-latest
-      timeout-minutes: 120
-      steps:
-        - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
-        - name: Set up dependencies
-          run: |
-            sudo apt-get update
-            # install gfortran
-            version=12
-            sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-            sudo apt-get update
-            sudo apt-get install -y gcc-${version} gfortran-${version}
-            sudo update-alternatives \
-              --install /usr/bin/gcc gcc /usr/bin/gcc-${version} 100 \
-              --slave /usr/bin/gfortran gfortran /usr/bin/gfortran-${version} \
-              --slave /usr/bin/gcov gcov /usr/bin/gcov-${version}
-            echo "---- gcc/gfortran version ------------------------------"
-            which gcc
-            which gfortran
-            gcc --version
-            gfortran --version
-        - name: Clean up git untracked files
-          run: |
-            git clean -fx
-        - name: Build GNU autotools
-          run: |
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/m4/m4-${M4_VERSION}.tar.gz
-            gzip -dc m4-${M4_VERSION}.tar.gz | tar -xf -
-            cd m4-${M4_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/autoconf/autoconf-${AUTOCONF_VERSION}.tar.gz
-            gzip -dc autoconf-${AUTOCONF_VERSION}.tar.gz | tar -xf -
-            cd autoconf-${AUTOCONF_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/automake/automake-${AUTOMAKE_VERSION}.tar.gz
-            gzip -dc automake-${AUTOMAKE_VERSION}.tar.gz | tar -xf -
-            cd automake-${AUTOMAKE_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/libtool/libtool-${LIBTOOL_VERSION}.tar.gz
-            gzip -dc libtool-${LIBTOOL_VERSION}.tar.gz | tar -xf -
-            cd libtool-${LIBTOOL_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build MPICH
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            echo "Install MPICH ${MPICH_VERSION} in ${GITHUB_WORKSPACE}/MPICH"
-            rm -rf MPICH ; mkdir MPICH ; cd MPICH
-            # git clone -q https://github.com/pmodels/mpich.git
-            # cd mpich
-            # git submodule update --init
-            # ./autogen.sh
-            wget -q https://www.mpich.org/static/downloads/${MPICH_VERSION}/mpich-${MPICH_VERSION}.tar.gz
-            gzip -dc mpich-${MPICH_VERSION}.tar.gz | tar -xf -
-            cd mpich-${MPICH_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/MPICH \
-                        --silent \
-                        --enable-romio \
-                        --with-file-system=ufs \
-                        --with-device=ch3:sock \
-                        --enable-fortran \
-                        CC=gcc FC=gfortran \
-                        FFLAGS=-fallow-argument-mismatch \
-                        FCFLAGS=-fallow-argument-mismatch
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build PnetCDF (MIMIC_LUSTRE)
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            m4 --version
-            autoconf --version
-            automake --version
-            libtool --version
-            autoreconf -i
-            mkdir -p ${RUNNER_TEMP}/pnetcdf_output
-            ./configure --prefix=${GITHUB_WORKSPACE}/PnetCDF \
-                        --enable-option-checking=fatal \
-                        pnc_ac_debug=yes \
-                        --enable-burst_buffering \
-                        --enable-subfiling \
-                        --enable-thread-safe \
-                        --with-pthread \
-                        --with-mpi=${GITHUB_WORKSPACE}/MPICH \
-                        TESTOUTDIR=${RUNNER_TEMP}/pnetcdf_output \
-                        MIMIC_LUSTRE=yes
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 tests
-        - name: Print config.log
-          if: ${{ always() }}
-          run: |
-            cat ${GITHUB_WORKSPACE}/config.log
-        - name: make check
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 check
-        - name: Print test log files
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            fname=`find src test examples benchmarks -type f -name "*.log"`
-            for f in $fname ; do \
-               bname=`basename $f` ; \
-               if test "x$bname" != xconfig.log ; then \
-                  echo "-------- dump $f ----------------------------" ; \
-                  cat $f ; \
-               fi ; \
-            done
-        - name: make ptests
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 ptests
-        - name: make distcheck
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -j 8 distcheck DISTCHECK_CONFIGURE_FLAGS="--silent --with-mpi=${GITHUB_WORKSPACE}/MPICH"
-        - name: make install
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            prefix_path=${GITHUB_WORKSPACE}/pnetcdf_install
-            echo "---- test make install prefix=${prefix_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path}
-            test/tst_install.sh ${prefix_path}
-            prefix_path="/pnetcdf_install"
-            destdir_path=${GITHUB_WORKSPACE}/inst
-            echo "---- test make install prefix=${prefix_path} DESTDIR=${destdir_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path} DESTDIR=${destdir_path}
-            test/tst_install.sh ${prefix_path} ${destdir_path}
-        - name: Cleanup
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 distclean
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_output
-            rm -rf ${GITHUB_WORKSPACE}/MPICH
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_install
-            rm -rf ${GITHUB_WORKSPACE}/inst
-
diff --git a/.github/workflows/ubuntu_openmpi.yml b/.github/workflows/ubuntu_openmpi.yml
deleted file mode 100644
index 7583062f8..000000000
--- a/.github/workflows/ubuntu_openmpi.yml
+++ /dev/null
@@ -1,180 +0,0 @@
-name: ubuntu_openmpi
-permissions:
-  contents: read
-  pull-requests: write
-
-on:
-  push:
-    branches: master
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - 'docs/*'
-      - 'test/test_installed/*'
-  pull_request:
-    branches: master
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - 'docs/*'
-      - 'test/test_installed/*'
-
-env:
-   OPENMPI_VERSION: 5.0.8
-   AUTOCONF_VERSION: 2.71
-   AUTOMAKE_VERSION: 1.17
-   LIBTOOL_VERSION: 2.5.4
-   M4_VERSION: 1.4.19
-
-jobs:
-    build:
-      runs-on: ubuntu-latest
-      timeout-minutes: 120
-      steps:
-        - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
-        - name: Set up dependencies
-          run: |
-            sudo apt-get update
-            # install gfortran
-            version=12
-            sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-            sudo apt-get update
-            sudo apt-get install -y gcc-${version} gfortran-${version}
-            sudo update-alternatives \
-              --install /usr/bin/gcc gcc /usr/bin/gcc-${version} 100 \
-              --slave /usr/bin/gfortran gfortran /usr/bin/gfortran-${version} \
-              --slave /usr/bin/gcov gcov /usr/bin/gcov-${version}
-            echo "---- gcc/gfortran version ------------------------------"
-            which gcc
-            which gfortran
-            gcc --version
-            gfortran --version
-        - name: Clean up git untracked files
-          run: |
-            git clean -fx
-        - name: Build GNU autotools
-          run: |
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/m4/m4-${M4_VERSION}.tar.gz
-            gzip -dc m4-${M4_VERSION}.tar.gz | tar -xf -
-            cd m4-${M4_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/autoconf/autoconf-${AUTOCONF_VERSION}.tar.gz
-            gzip -dc autoconf-${AUTOCONF_VERSION}.tar.gz | tar -xf -
-            cd autoconf-${AUTOCONF_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/automake/automake-${AUTOMAKE_VERSION}.tar.gz
-            gzip -dc automake-${AUTOMAKE_VERSION}.tar.gz | tar -xf -
-            cd automake-${AUTOMAKE_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/libtool/libtool-${LIBTOOL_VERSION}.tar.gz
-            gzip -dc libtool-${LIBTOOL_VERSION}.tar.gz | tar -xf -
-            cd libtool-${LIBTOOL_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build OPENMPI
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            echo "Install OPENMPI ${OPENMPI_VERSION} in ${GITHUB_WORKSPACE}/OPENMPI"
-            rm -rf OPENMPI ; mkdir OPENMPI ; cd OPENMPI
-            VER_MAJOR=${OPENMPI_VERSION%.*}
-            wget -q https://download.open-mpi.org/release/open-mpi/v${VER_MAJOR}/openmpi-${OPENMPI_VERSION}.tar.gz
-            gzip -dc openmpi-${OPENMPI_VERSION}.tar.gz | tar -xf -
-            cd openmpi-${OPENMPI_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/OPENMPI \
-                        --silent \
-                        --with-io-romio-flags="--with-file-system=ufs" \
-                        CC=gcc \
-                        FC=gfortran \
-                        FCFLAGS=-fallow-argument-mismatch
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build PnetCDF
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            m4 --version
-            autoconf --version
-            automake --version
-            libtool --version
-            autoreconf -i
-            mkdir -p pnetcdf_output
-            ./configure --prefix=${GITHUB_WORKSPACE}/PnetCDF \
-                        --enable-option-checking=fatal \
-                        pnc_ac_debug=yes \
-                        --enable-burst_buffering \
-                        --enable-subfiling \
-                        --enable-thread-safe \
-                        --with-pthread \
-                        --with-mpi=${GITHUB_WORKSPACE}/OPENMPI \
-                        TESTOUTDIR=${GITHUB_WORKSPACE}/pnetcdf_output
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 tests
-        - name: Print config.log
-          if: ${{ always() }}
-          run: |
-            cat ${GITHUB_WORKSPACE}/config.log
-        - name: make check
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 check
-        - name: Print test log files
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            fname=`find src test examples benchmarks -type f -name "*.log"`
-            for f in $fname ; do \
-               bname=`basename $f` ; \
-               if test "x$bname" != xconfig.log ; then \
-                  echo "-------- dump $f ----------------------------" ; \
-                  cat $f ; \
-               fi ; \
-            done
-        - name: make ptests
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 ptests
-        - name: make distcheck
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -j 8 distcheck DISTCHECK_CONFIGURE_FLAGS="--silent --with-mpi=${GITHUB_WORKSPACE}/OPENMPI"
-        - name: make install
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            prefix_path=${GITHUB_WORKSPACE}/pnetcdf_install
-            echo "---- test make install prefix=${prefix_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path}
-            test/tst_install.sh ${prefix_path}
-            prefix_path="/pnetcdf_install"
-            destdir_path=${GITHUB_WORKSPACE}/inst
-            echo "---- test make install prefix=${prefix_path} DESTDIR=${destdir_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path} DESTDIR=${destdir_path}
-            test/tst_install.sh ${prefix_path} ${destdir_path}
-        - name: Cleanup
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 distclean
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_output
-            rm -rf ${GITHUB_WORKSPACE}/OPENMPI
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_install
-            rm -rf ${GITHUB_WORKSPACE}/inst
-
diff --git a/.github/workflows/ubuntu_openmpi_lustre.yml b/.github/workflows/ubuntu_openmpi_lustre.yml
deleted file mode 100644
index 95a1761af..000000000
--- a/.github/workflows/ubuntu_openmpi_lustre.yml
+++ /dev/null
@@ -1,181 +0,0 @@
-name: ubuntu_openmpi (MIMIC_LUSTRE)
-permissions:
-  contents: read
-  pull-requests: write
-
-on:
-  push:
-    branches: master
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - 'docs/*'
-      - 'test/test_installed/*'
-  pull_request:
-    branches: master
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-      - '**/*.1'
-      - 'docs/*'
-      - 'test/test_installed/*'
-
-env:
-   OPENMPI_VERSION: 5.0.8
-   AUTOCONF_VERSION: 2.71
-   AUTOMAKE_VERSION: 1.17
-   LIBTOOL_VERSION: 2.5.4
-   M4_VERSION: 1.4.19
-
-jobs:
-    build:
-      runs-on: ubuntu-latest
-      timeout-minutes: 120
-      steps:
-        - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
-        - name: Set up dependencies
-          run: |
-            sudo apt-get update
-            # install gfortran
-            version=12
-            sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-            sudo apt-get update
-            sudo apt-get install -y gcc-${version} gfortran-${version}
-            sudo update-alternatives \
-              --install /usr/bin/gcc gcc /usr/bin/gcc-${version} 100 \
-              --slave /usr/bin/gfortran gfortran /usr/bin/gfortran-${version} \
-              --slave /usr/bin/gcov gcov /usr/bin/gcov-${version}
-            echo "---- gcc/gfortran version ------------------------------"
-            which gcc
-            which gfortran
-            gcc --version
-            gfortran --version
-        - name: Clean up git untracked files
-          run: |
-            git clean -fx
-        - name: Build GNU autotools
-          run: |
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/m4/m4-${M4_VERSION}.tar.gz
-            gzip -dc m4-${M4_VERSION}.tar.gz | tar -xf -
-            cd m4-${M4_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/autoconf/autoconf-${AUTOCONF_VERSION}.tar.gz
-            gzip -dc autoconf-${AUTOCONF_VERSION}.tar.gz | tar -xf -
-            cd autoconf-${AUTOCONF_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/automake/automake-${AUTOMAKE_VERSION}.tar.gz
-            gzip -dc automake-${AUTOMAKE_VERSION}.tar.gz | tar -xf -
-            cd automake-${AUTOMAKE_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-            cd ${GITHUB_WORKSPACE}
-            wget -q https://ftp.gnu.org/gnu/libtool/libtool-${LIBTOOL_VERSION}.tar.gz
-            gzip -dc libtool-${LIBTOOL_VERSION}.tar.gz | tar -xf -
-            cd libtool-${LIBTOOL_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/AUTOTOOLS \
-                        --silent
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build OPENMPI
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            echo "Install OPENMPI ${OPENMPI_VERSION} in ${GITHUB_WORKSPACE}/OPENMPI"
-            rm -rf OPENMPI ; mkdir OPENMPI ; cd OPENMPI
-            VER_MAJOR=${OPENMPI_VERSION%.*}
-            wget -q https://download.open-mpi.org/release/open-mpi/v${VER_MAJOR}/openmpi-${OPENMPI_VERSION}.tar.gz
-            gzip -dc openmpi-${OPENMPI_VERSION}.tar.gz | tar -xf -
-            cd openmpi-${OPENMPI_VERSION}
-            ./configure --prefix=${GITHUB_WORKSPACE}/OPENMPI \
-                        --silent \
-                        --with-io-romio-flags="--with-file-system=ufs" \
-                        CC=gcc \
-                        FC=gfortran \
-                        FCFLAGS=-fallow-argument-mismatch
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 install > qout 2>&1
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 distclean >> qout 2>&1
-        - name: Build PnetCDF (MIMIC_LUSTRE)
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            export PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/bin:${PATH}"
-            export LD_LIBRARY_PATH="${GITHUB_WORKSPACE}/AUTOTOOLS/lib:${LD_LIBRARY_PATH}"
-            m4 --version
-            autoconf --version
-            automake --version
-            libtool --version
-            autoreconf -i
-            mkdir -p pnetcdf_output
-            ./configure --prefix=${GITHUB_WORKSPACE}/PnetCDF \
-                        --enable-option-checking=fatal \
-                        pnc_ac_debug=yes \
-                        --enable-burst_buffering \
-                        --enable-subfiling \
-                        --enable-thread-safe \
-                        --with-pthread \
-                        --with-mpi=${GITHUB_WORKSPACE}/OPENMPI \
-                        TESTOUTDIR=${GITHUB_WORKSPACE}/pnetcdf_output \
-                        MIMIC_LUSTRE=yes
-            make -s LIBTOOLFLAGS=--silent V=1 -j 8 tests
-        - name: Print config.log
-          if: ${{ always() }}
-          run: |
-            cat ${GITHUB_WORKSPACE}/config.log
-        - name: make check
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 check
-        - name: Print test log files
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            fname=`find src test examples benchmarks -type f -name "*.log"`
-            for f in $fname ; do \
-               bname=`basename $f` ; \
-               if test "x$bname" != xconfig.log ; then \
-                  echo "-------- dump $f ----------------------------" ; \
-                  cat $f ; \
-               fi ; \
-            done
-        - name: make ptests
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 ptests
-        - name: make distcheck
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -j 8 distcheck DISTCHECK_CONFIGURE_FLAGS="--silent --with-mpi=${GITHUB_WORKSPACE}/OPENMPI"
-        - name: make install
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            prefix_path=${GITHUB_WORKSPACE}/pnetcdf_install
-            echo "---- test make install prefix=${prefix_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path}
-            test/tst_install.sh ${prefix_path}
-            prefix_path="/pnetcdf_install"
-            destdir_path=${GITHUB_WORKSPACE}/inst
-            echo "---- test make install prefix=${prefix_path} DESTDIR=${destdir_path}"
-            make -s LIBTOOLFLAGS=--silent V=1 install prefix=${prefix_path} DESTDIR=${destdir_path}
-            test/tst_install.sh ${prefix_path} ${destdir_path}
-        - name: Cleanup
-          if: ${{ always() }}
-          run: |
-            cd ${GITHUB_WORKSPACE}
-            make -s LIBTOOLFLAGS=--silent V=1 distclean
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_output
-            rm -rf ${GITHUB_WORKSPACE}/OPENMPI
-            rm -rf ${GITHUB_WORKSPACE}/pnetcdf_install
-            rm -rf ${GITHUB_WORKSPACE}/inst
-