diff --git a/definition-files/omb/Singularity.omb-5.7-centos-7.7.1908-openmpi-3.1.6 b/definition-files/omb/Singularity.omb-5.7-centos-7.7.1908-openmpi-3.1.6
new file mode 100644
index 0000000000000000000000000000000000000000..6edd872b47c322d5bd602a5a86c1b9b455770639
--- /dev/null
+++ b/definition-files/omb/Singularity.omb-5.7-centos-7.7.1908-openmpi-3.1.6
@@ -0,0 +1,112 @@
+Bootstrap: localimage
+From: ../centos/centos-7.7.1908-openmpi-3.1.6.sif
+
+%labels
+
+    APPLICATION_NAME OSU Microbenchmarks
+    APPLICATION_VERSION 5.6.3
+    APPLICATION_URL http://mvapich.cse.ohio-state.edu/benchmarks
+
+    AUTHOR_NAME Marty Kandes
+    AUTHOR_EMAIL mkandes@sdsc.edu
+
+    LAST_UPDATED 20210726
+
+%setup
+
+%environment
+
+    # Set OMB major and minor version numbers, root and
+    # installation directories
+    export OMB_ROOT_URL='http://mvapich.cse.ohio-state.edu/download/mvapich'
+    export OMB_MAJOR='5'
+    export OMB_MINOR='7'
+    export OMB_VERSION="${OMB_MAJOR}.${OMB_MINOR}"
+    export OMB_ROOT_DIR='/opt/omb'
+    export OMB_INSTALL_DIR="${OMB_ROOT_DIR}/${OMB_VERSION}"
+
+    # Set paths to OSU Microbenchmarks binaries
+    export PATH="${OMB_INSTALL_DIR}/collective:${PATH}"
+    export PATH="${OMB_INSTALL_DIR}/one-sided:${PATH}"
+    export PATH="${OMB_INSTALL_DIR}/pt2pt:${PATH}"
+    export PATH="${OMB_INSTALL_DIR}/startup:${PATH}"
+
+%post -c /bin/bash
+
+    # Set operating system mirror URL
+    export MIRRORURL='https://vault.centos.org/7.7.1908/os/x86_64'
+
+    # Set operating system version
+    export OSVERSION='7'
+
+    # Set system locale
+    export LC_ALL=C
+
+    # Set Mellanox OFED version, operating system, and hardware platform
+    export MLNX_ROOT_URL='http://www.mellanox.com/downloads/ofed'
+    export MLNX_OFED_VERSION='4.7-3.2.9.0'
+    export MLNX_OS_VERSION='rhel7.7'
+    export MLNX_PLATFORM='x86_64'
+
+    # Set OpenMPI major, minor, and revision numbers, root and
+    # installation directories
+    export OMPI_ROOT_URL='https://download.open-mpi.org/release/open-mpi'
+    export OMPI_MAJOR='3'
+    export OMPI_MINOR='1'
+    export OMPI_REVISION='6'
+    export OMPI_VERSION="${OMPI_MAJOR}.${OMPI_MINOR}.${OMPI_REVISION}"
+    export OMPI_ROOT_DIR='/opt/openmpi'
+    export OMPI_INSTALL_DIR="${OMPI_ROOT_DIR}/${OMPI_VERSION}"
+
+    # Set paths to OpenMPI binaries and libraries
+    export PATH="${OMPI_INSTALL_DIR}/bin:${PATH}"
+    export LD_LIBRARY_PATH="${OMPI_INSTALL_DIR}/lib:${LD_LIBRARY_PATH}"
+
+    # Update all software packages to their latest versions
+    yum -y check-update && yum -y update
+
+    cd /tmp
+
+    # Set OMB major and minor version numbers, root and
+    # installation directories
+    export OMB_ROOT_URL='http://mvapich.cse.ohio-state.edu/download/mvapich'
+    export OMB_MAJOR='5'
+    export OMB_MINOR='7'
+    export OMB_VERSION="${OMB_MAJOR}.${OMB_MINOR}"
+    export OMB_ROOT_DIR='/opt/omb'
+    export OMB_INSTALL_DIR="${OMB_ROOT_DIR}/${OMB_VERSION}"
+
+    # Download, build, and install OSU Microbenchmarks
+    wget "${OMB_ROOT_URL}/osu-micro-benchmarks-${OMB_VERSION}.tar.gz"
+    tar -xf "osu-micro-benchmarks-${OMB_VERSION}.tar.gz"
+    cd "osu-micro-benchmarks-${OMB_VERSION}"
+    ./configure --prefix="${OMB_INSTALL_DIR}" CC='mpicc' CXX='mpicxx'
+    make
+    make install
+
+    # Reorganize OSU Microbenchmarks directory structure
+    cd "${OMB_INSTALL_DIR}"
+    mv libexec/osu-micro-benchmarks/mpi/collective ./
+    mv libexec/osu-micro-benchmarks/mpi/one-sided ./
+    mv libexec/osu-micro-benchmarks/mpi/pt2pt ./
+    mv libexec/osu-micro-benchmarks/mpi/startup ./
+    rm -rf libexec
+
+    cd /tmp
+
+    # Remove OMB build directory and source tarball
+    rm -rf "osu-micro-benchmarks-${OMB_VERSION}"
+    rm "osu-micro-benchmarks-${OMB_VERSION}.tar.gz"
+
+    # Cleanup
+    package-cleanup -q --leaves | xargs -l1 yum -y remove
+    yum -y clean all
+
+    # Update database for mlocate
+    updatedb
+
+%files
+
+%runscript
+
+%test