diff --git a/sw_stack/discover/sles15/HISTORY.md b/sw_stack/discover/sles15/HISTORY.md
index 27aca0d..3c08411 100644
--- a/sw_stack/discover/sles15/HISTORY.md
+++ b/sw_stack/discover/sles15/HISTORY.md
@@ -6,7 +6,13 @@ All versions of the software for a given version are saved in `basics.sh`.
 `build` directory is the throwaway directory where everything is downloaded then built.
 `install` is saves all library and executable once build is done.
 
-Last edit: _March 22th 2024_
+Last edit: _April 22th 2024_
+
+## v2024.04.00
+
+### Changes
+
+- NDSL `2024.03.01` -> `2024.04.00`
 
 ## v2024.03.00
 
diff --git a/sw_stack/discover/sles15/modulefiles/SMTStack/2024.04.00-no-venv.lua b/sw_stack/discover/sles15/modulefiles/SMTStack/2024.04.00-no-venv.lua
new file mode 100644
index 0000000..8e85696
--- /dev/null
+++ b/sw_stack/discover/sles15/modulefiles/SMTStack/2024.04.00-no-venv.lua
@@ -0,0 +1,44 @@
+load("comp/gcc/12.3.0")
+load("lib/mkl/2023.2.0")
+load("nvidia/nvhpc-byo-compiler/23.9")
+
+local install_dir  = "/discover/nobackup/projects/geosongpu/sw_sles15/live/src/2024.04.00/install"
+
+-- Fix: GT4Py expects CUDA_HOME to be set --
+setenv("CUDA_HOME", os.getenv("NVHPC_ROOT"))
+
+-- UCX --
+local ucx_pkgdir = pathJoin(install_dir, "ucx")
+prepend_path("LD_LIBRARY_PATH",pathJoin(ucx_pkgdir,"lib"))
+
+-- OMPI --
+local ompi_pkgdir = pathJoin(install_dir, "ompi")
+
+setenv("M_MPI_ROOT",ompi_pkgdir)
+setenv("OPENMPI",ompi_pkgdir)
+setenv("MPI_HOME",ompi_pkgdir)
+
+prepend_path("PATH",pathJoin(ompi_pkgdir,"bin"))
+prepend_path("LD_LIBRARY_PATH",pathJoin(ompi_pkgdir,"lib"))
+prepend_path("INCLUDE",pathJoin(ompi_pkgdir,"include"))
+prepend_path("MANPATH",pathJoin(ompi_pkgdir,"share/man"))
+
+setenv("OMPI_MCA_orte_tmpdir_base","/tmp")
+setenv("TMPDIR","/tmp")
+setenv("OMP_STACKSIZE","1G")
+setenv("OMPI_MCA_mca_base_component_show_load_errors","0")
+setenv("PMIX_MCA_mca_base_component_show_load_errors","0")
+
+-- BOOST HEADERS (as expected by gt4py) --
+local boost_pkgdir = pathJoin(install_dir, "boost")
+setenv("BOOST_ROOT", boost_pkgdir)
+
+-- Python 3 --
+local py_pkgdir = pathJoin(install_dir, "python3")
+prepend_path("PATH",pathJoin(py_pkgdir,"bin"))
+prepend_path("LD_LIBRARY_PATH",pathJoin(py_pkgdir,"lib"))
+prepend_path("LD_LIBRARY_PATH",pathJoin(py_pkgdir,"lib64"))
+
+-- Baselibs at a BASEDIR --
+local baselibs_pkgdir = pathJoin(install_dir, "baselibs-7.17.1/install/x86_64-pc-linux-gnu/")
+setenv("BASEDIR", baselibs_pkgdir)
diff --git a/sw_stack/discover/sles15/modulefiles/SMTStack/2024.04.00.lua b/sw_stack/discover/sles15/modulefiles/SMTStack/2024.04.00.lua
new file mode 100644
index 0000000..b38c99c
--- /dev/null
+++ b/sw_stack/discover/sles15/modulefiles/SMTStack/2024.04.00.lua
@@ -0,0 +1,49 @@
+load("comp/gcc/12.3.0")
+load("lib/mkl/2023.2.0")
+load("nvidia/nvhpc-byo-compiler/23.9")
+
+local install_dir  = "/discover/nobackup/projects/geosongpu/sw_sles15/live/src/2024.04.00/install"
+
+-- Fix: GT4Py expects CUDA_HOME to be set --
+setenv("CUDA_HOME", os.getenv("NVHPC_ROOT"))
+
+-- UCX --
+local ucx_pkgdir = pathJoin(install_dir, "ucx")
+prepend_path("LD_LIBRARY_PATH",pathJoin(ucx_pkgdir,"lib"))
+
+-- OMPI --
+local ompi_pkgdir = pathJoin(install_dir, "ompi")
+
+setenv("M_MPI_ROOT",ompi_pkgdir)
+setenv("OPENMPI",ompi_pkgdir)
+setenv("MPI_HOME",ompi_pkgdir)
+
+prepend_path("PATH",pathJoin(ompi_pkgdir,"bin"))
+prepend_path("LD_LIBRARY_PATH",pathJoin(ompi_pkgdir,"lib"))
+prepend_path("INCLUDE",pathJoin(ompi_pkgdir,"include"))
+prepend_path("MANPATH",pathJoin(ompi_pkgdir,"share/man"))
+
+setenv("OMPI_MCA_orte_tmpdir_base","/tmp")
+setenv("TMPDIR","/tmp")
+setenv("OMP_STACKSIZE","1G")
+setenv("OMPI_MCA_mca_base_component_show_load_errors","0")
+setenv("PMIX_MCA_mca_base_component_show_load_errors","0")
+
+-- BOOST HEADERS (as expected by gt4py) --
+local boost_pkgdir = pathJoin(install_dir, "boost")
+setenv("BOOST_ROOT", boost_pkgdir)
+
+-- Python 3 --
+local py_pkgdir = pathJoin(install_dir, "python3")
+prepend_path("PATH",pathJoin(py_pkgdir,"bin"))
+prepend_path("LD_LIBRARY_PATH",pathJoin(py_pkgdir,"lib"))
+prepend_path("LD_LIBRARY_PATH",pathJoin(py_pkgdir,"lib64"))
+
+-- Load venv --
+local py_pkgdir = pathJoin(install_dir, "venv")
+prepend_path("PATH",pathJoin(py_pkgdir,"bin"))
+setenv("VIRTUAL_ENV", py_pkgdir)
+
+-- Baselibs at a BASEDIR --
+local baselibs_pkgdir = pathJoin(install_dir, "baselibs-7.17.1/install/x86_64-pc-linux-gnu/")
+setenv("BASEDIR", baselibs_pkgdir)
diff --git a/sw_stack/discover/sles15/src/2024.04.00/basics.sh b/sw_stack/discover/sles15/src/2024.04.00/basics.sh
new file mode 100755
index 0000000..8869c3a
--- /dev/null
+++ b/sw_stack/discover/sles15/src/2024.04.00/basics.sh
@@ -0,0 +1,37 @@
+#!/bin/bash
+
+export DSLSW_VERSION="2024.04.00"
+echo "DSL Software Stack v${DSLSW_VERSION}"
+
+# Version
+export DSLSW_GDRCOPY_VER=2.3
+export DSLSW_OMPI_MAJOR_VER=4.1
+export DSLSW_OMPI_VER=${DSLSW_OMPI_MAJOR_VER}.6
+export DSLSW_UCX_VER=1.15.0
+export DSLSW_CUDA_VER=12.2
+export DSLSW_OSUMICRO_VER=7.3
+export DSLSW_LAPACK_VER=3.11.0
+export DSLSW_PY_VER=3.11.7
+export DSLSW_BASELIBS_VER=7.17.1
+export DSLSW_SERIALBOX_VER=2.6.2-unreleased
+export DSLSW_SERIALBOX_SHA=88ac4e4dfc824953d068fe63c8e7b3dd9560a914
+export DSLSW_GNU_VER=12.2.0
+export DSLSW_NDSL_VER=2024.04.00
+export DSLSW_BOOST_VER=1.76.0
+export DSLSW_BOOST_VER_STR=1_76_0 
+
+# Base directory & versioning
+export DSLSW_BASE=$PWD/build
+mkdir -p $DSLSW_BASE
+export DSLSW_INSTALL_DIR=$PWD/install
+mkdir -p $DSLSW_INSTALL_DIR
+
+# Modules
+module use -a /discover/nobackup/projects/geosongpu/sw_sles15/live/modulefiles/
+module load SMTStack/${DSLSW_VERSION}
+CUDA_DIR=/usr/local/other/nvidia/hpc_sdk/Linux_x86_64/23.9/cuda/
+
+# Enforce proper compilers
+export FC=gfortran
+export CC=gcc
+export CXX=g++
diff --git a/sw_stack/discover/sles15/src/2024.04.00/build_0_on-node.sh b/sw_stack/discover/sles15/src/2024.04.00/build_0_on-node.sh
new file mode 100755
index 0000000..1bac314
--- /dev/null
+++ b/sw_stack/discover/sles15/src/2024.04.00/build_0_on-node.sh
@@ -0,0 +1,147 @@
+#!/bin/bash
+
+# Source the shared basics
+source ./basics.sh
+
+echo " === GDR Copy (requires kernel running on the box) === "
+#cd $DSLSW_BASE/gdrcopy-$DSLSW_GDRCOPY_VER
+#make prefix=$DSLSW_INSTALL_DIR/gdrcopy CUDA=$CUDA_DIR all install
+#exit 0
+
+echo " === UCX === "
+cd $DSLSW_BASE/ucx-$DSLSW_UCX_VER
+./configure --prefix=$DSLSW_INSTALL_DIR/ucx \
+            --enable-optimizations \
+            --disable-logging \
+            --disable-debug \
+            --disable-assertions \
+            --disable-params-check \
+            --without-xpmem \
+            --without-java \
+            --without-go \
+            --with-cuda=$CUDA_DIR \
+            --with-gdrcopy=/usr/src/gdrdrv-$DSLSW_GDRCOPY_VER/
+
+make -j 32 install
+#exit 0
+
+echo " === OpenMPI === "
+
+# NSL lib (-lnsl) was not symlink from libnsl.so.1 which lead to issues (--disable-getpwuid is an attempt to squash that, which seems unsucessful). Potentially, removing the LSF scheduler build would work.
+
+# libxml2 has a /zero on it's init (https://gitlab.gnome.org/GNOME/libxml2/-/blob/7846b0a677f8d3ce72486125fa281e92ac9970e8/xpath.c#L505) which seems to trigger a sigfpe. Relying on the internal but potentially wobly XML parser of OMPI
+
+cd $DSLSW_BASE/openmpi-${DSLSW_OMPI_VER}
+./configure --prefix=$DSLSW_INSTALL_DIR/ompi \
+            --disable-libxml2 \
+            --disable-wrapper-rpath \
+            --disable-wrapper-runpath \
+            --with-pmix \
+            --with-cuda=$CUDA_DIR \
+            --with-cuda-libdir=$CUDA_DIR/lib64/stubs \
+            --with-ucx=$DSLSW_INSTALL_DIR/ucx \
+            --with-slurm \
+            --enable-mpi1-compatibility
+
+make -j32 all 
+make install 
+export PATH=$DSLSW_INSTALL_DIR/ompi/bin:$PATH
+export LD_LIBRARY_PATH=$DSLSW_INSTALL_DIR/ompi/lib:$DSLSW_INSTALL_DIR/ucx/lib:$LD_LIBRARY_PATH
+
+echo " === OSU === "
+
+cd $DSLSW_BASE/osu-micro-benchmarks-$DSLSW_OSUMICRO_VER
+./configure \
+    CC=mpicc \
+    CXX=mpicxx \
+    --prefix=$DSLSW_INSTALL_DIR/osu \
+    --enable-cuda \
+    --with-cuda-include=$CUDA_DIR/include \
+    --with-cuda=$CUDA_DIR \
+    --with-cuda-libpath=$CUDA_DIR/lib64/stubs/
+
+make -j32
+make install
+
+echo " === Python === "
+cd $DSLSW_BASE/Python-$DSLSW_PY_VER
+./configure --prefix=$DSLSW_INSTALL_DIR/python3 --enable-shared --enable-optimizations
+
+make -j32
+make install
+
+echo " === Serialbox === "
+cd $DSLSW_BASE/serialbox-$DSLSW_SERIALBOX_VER
+mkdir build
+cd build
+cmake -DCMAKE_INSTALL_PREFIX=$DSLSW_INSTALL_DIR/serialbox \
+    -DSERIALBOX_ENABLE_FORTRAN=ON \
+    -DSERIALBOX_EXAMPLES=OFF \
+    ..
+make -j32 install
+
+
+echo " === Baselibs === "
+cd $DSLSW_BASE/baselibs-$DSLSW_BASELIBS_VER
+make ESMF_COMM=openmpi \
+    BUILD=ESSENTIALS \
+    ALLOW_ARGUMENT_MISMATCH=-fallow-argument-mismatch \
+    prefix=$DSLSW_INSTALL_DIR/baselibs-$DSLSW_BASELIBS_VER/install/x86_64-pc-linux-gnu/Linux \
+    install
+
+if [ -z ${BUILD_GCC_OFFLOAD+x} ]; then
+    echo "Skip building offloaded GCC. Define BUILD_GCC_OFFLOAD to build."
+else
+    echo " === GNU gcc/gfortran/g++ with OpenACC and OpenMP Offload on NVIDIA GPUs === "
+    module rm comp/gcc/12.3.0
+    module rm nvidia/nvhpc-nompi/23.9
+    unset CC
+    unset CXX
+    unset FC
+
+    # Build assembler and linking tools
+    cd $DSLSW_BASE/gnu/nvptx-tools
+    ./configure \
+        --with-cuda-driver-include=$CUDA_DIR/include \
+        --with-cuda-driver-lib=$CUDA_DIR/lib64 \
+        --prefix=$DSLSW_INSTALL_DIR/gnu
+    make || exit 1
+    make install || exit 1
+    cd ..
+
+    # Set up the GCC source tree
+    cd $DSLSW_BASE/gnu/gcc
+    ln -s ../nvptx-newlib/newlib newlib
+    cd ..
+    export target=$(gcc/config.guess)
+
+    # Build nvptx GCC
+    mkdir build-nvptx-gcc
+    cd build-nvptx-gcc
+    ../gcc/configure \
+        --target=nvptx-none --with-build-time-tools=$DSLSW_INSTALL_DIR/gnu/nvptx-none/bin \
+        --enable-as-accelerator-for=$target \
+        --disable-sjlj-exceptions \
+        --enable-newlib-io-long-long \
+        --enable-languages="c,c++,fortran,lto" \
+        --prefix=$DSLSW_INSTALL_DIR/gnu
+    make -j`nproc` || exit 1
+    make install || exit 1
+    cd ..
+
+    # Build host GCC
+    mkdir build-host-gcc
+    cd  build-host-gcc
+    ../gcc/configure \
+        --enable-offload-targets=nvptx-none \
+        --with-cuda-driver-include=$CUDA_DIR/include \
+        --with-cuda-driver-lib=$CUDA_DIR/lib64 \
+        --disable-bootstrap \
+        --disable-multilib \
+        --enable-languages="c,c++,fortran,lto" \
+        --prefix=$DSLSW_INSTALL_DIR/gnu
+    make -j`nproc` || exit 1
+    make install || exit 1
+    cd ..
+fi
+
diff --git a/sw_stack/discover/sles15/src/2024.04.00/build_1_on-login.sh b/sw_stack/discover/sles15/src/2024.04.00/build_1_on-login.sh
new file mode 100755
index 0000000..5be5232
--- /dev/null
+++ b/sw_stack/discover/sles15/src/2024.04.00/build_1_on-login.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+# Source the shared basics
+source ./basics.sh
+
+echo " === Make NDSL venv === "
+cd $DSLSW_INSTALL_DIR
+python3 -m venv venv
+source ./venv/bin/activate
+pip install --upgrade setuptools pip
+pip install -e $DSLSW_INSTALL_DIR/ndsl
+pip install mpi4py cffi cupy-cuda12x
diff --git a/sw_stack/discover/sles15/src/2024.04.00/build_2_check.sh b/sw_stack/discover/sles15/src/2024.04.00/build_2_check.sh
new file mode 100755
index 0000000..1740e49
--- /dev/null
+++ b/sw_stack/discover/sles15/src/2024.04.00/build_2_check.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+source ./basics.sh
+
+echo $DSLSW_INSTALL_DIR
+echo `which $FC`
+echo `which $CC`
+
+echo $LD_LIBRARY_PATH
+
+rm -rf build
\ No newline at end of file
diff --git a/sw_stack/discover/sles15/src/2024.04.00/build_3_inode-clean.sh b/sw_stack/discover/sles15/src/2024.04.00/build_3_inode-clean.sh
new file mode 100644
index 0000000..da814f9
--- /dev/null
+++ b/sw_stack/discover/sles15/src/2024.04.00/build_3_inode-clean.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+source ./basics.sh
+
+rm -rf $DSLSW_BASE
\ No newline at end of file
diff --git a/sw_stack/discover/sles15/src/2024.04.00/download.sh b/sw_stack/discover/sles15/src/2024.04.00/download.sh
new file mode 100755
index 0000000..6e0b2f6
--- /dev/null
+++ b/sw_stack/discover/sles15/src/2024.04.00/download.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+
+# Source the share basics
+source ./basics.sh
+
+cd $DSLSW_BASE
+
+# GDR Copy should be present in /usr/src/gdrdrv-*
+#wget -c https://github.com/NVIDIA/gdrcopy/archive/refs/tags/v$DSLSW_GDRCOPY_VER.tar.gz
+#tar zxpvf v$DSLSW_GDRCOPY_VER.tar.gz
+#rm v$DSLSW_GDRCOPY_VER.tar.gz
+
+wget https://github.com/openucx/ucx/releases/download/v${DSLSW_UCX_VER}/ucx-${DSLSW_UCX_VER}.tar.gz
+tar xfp ucx-$DSLSW_UCX_VER.tar.gz
+rm ucx-$DSLSW_UCX_VER.tar.gz
+
+wget https://download.open-mpi.org/release/open-mpi/v$DSLSW_OMPI_MAJOR_VER/openmpi-${DSLSW_OMPI_VER}.tar.gz
+tar xfzp openmpi-$DSLSW_OMPI_VER.tar.gz
+rm openmpi-$DSLSW_OMPI_VER.tar.gz
+
+wget https://mvapich.cse.ohio-state.edu/download/mvapich/osu-micro-benchmarks-$DSLSW_OSUMICRO_VER.tar.gz
+tar xfp osu-micro-benchmarks-$DSLSW_OSUMICRO_VER.tar.gz
+rm osu-micro-benchmarks-$DSLSW_OSUMICRO_VER.tar.gz
+
+wget https://www.python.org/ftp/python/$DSLSW_PY_VER/Python-$DSLSW_PY_VER.tgz
+tar zxpvf Python-$DSLSW_PY_VER.tgz
+rm Python-$DSLSW_PY_VER.tgz
+
+git clone https://github.com/GridTools/serialbox.git serialbox-$DSLSW_SERIALBOX_VER
+cd serialbox-$DSLSW_SERIALBOX_VER
+git checkout $DSLSW_SERIALBOX_SHA
+cd $DSLSW_BASE
+
+git clone --recurse-submodules -b v$DSLSW_BASELIBS_VER https://github.com/GEOS-ESM/ESMA-Baselibs.git ./baselibs-$DSLSW_BASELIBS_VER
+cd ./baselibs-$DSLSW_BASELIBS_VER
+make download
+echo "=>Baselibs >> Removing HDF4 from the ESSENTIALS"
+sed -i 's/ESSENTIAL_DIRS = jpeg zlib szlib hdf4 hdf5/ESSENTIAL_DIRS = jpeg zlib szlib hdf5/g' GNUmakefile
+sed -i 's/\/zlib \/szlib \/jpeg \/hdf5 \/hdf \/netcdf,\\/\/ \/zlib \/szlib \/jpeg \/hdf5 \/netcdf,\\/g' GNUmakefile
+cd $DSLSW_BASE
+
+if [ -z ${BUILD_GCC_OFFLOAD+x} ]; then
+    echo "Skip building offloaded GCC. Define BUILD_GCC_OFFLOAD to build."
+else
+    mkdir gnu
+    cd gnu
+    git clone https://github.com/SourceryTools/nvptx-tools
+    git clone git://sourceware.org/git/newlib-cygwin.git nvptx-newlib
+    git clone --branch releases/gcc-${DSLSW_GNU_VER} git://gcc.gnu.org/git/gcc.git gcc
+    cd gcc
+    contrib/download_prerequisites
+fi
+
+# Stream include out of boost source
+cd $DSLSW_INSTALL_DIR
+wget https://boostorg.jfrog.io/artifactory/main/release/$DSLSW_BOOST_VER/source/boost_$DSLSW_BOOST_VER_STR.tar.gz
+tar zxpvf boost_$DSLSW_BOOST_VER_STR.tar.gz
+rm boost_$DSLSW_BOOST_VER_STR.tar.gz
+mkdir -p boost/include
+mv boost_$DSLSW_BOOST_VER_STR/boost boost/include
+rm -r boost_$DSLSW_BOOST_VER_STR
+cd $DSLSW_BASE
+
+# Git clone `ndsl`, with the minimuum amount of history
+cd $DSLSW_INSTALL_DIR
+git clone --recurse-submodules --shallow-submodules -b $DSLSW_NDSL_VER --single-branch --depth 1 https://github.com/NOAA-GFDL/NDSL.git ndsl
+cd $DSLSW_BASE
diff --git a/sw_stack/discover/sles15/src/2024.04.00/osu-bench.sh b/sw_stack/discover/sles15/src/2024.04.00/osu-bench.sh
new file mode 100644
index 0000000..4658a1b
--- /dev/null
+++ b/sw_stack/discover/sles15/src/2024.04.00/osu-bench.sh
@@ -0,0 +1,86 @@
+#!/bin/bash
+
+source ./basics.sh
+
+# need to be ran on a salloc with 2 process on one node each
+if [[ $(hostname -s) != warpa* ]]; then
+    echo "salloc on a 2 warpa nodes!"
+    exit 0
+fi
+
+which 'mpirun'
+which 'osu_bw'
+
+echo "Host to Host"
+mpirun  -x UCX_IB_GPU_DIRECT_RDMA=0 \
+        -mca btl '^openib' \
+        -mca pml ucx \
+        -mca opal_warn_on_missing_libcuda 1 \
+        -mca btl_smcuda_cuda_ipc_verbose 1 \
+        -mca btl_openib_want_cuda_gdr 1 \
+        -mca orte_tmpdir_base $TSE_TMPDIR \
+        -mca orte_base_help_aggregate 0 \
+        -x UCX_TLS=rc,cuda,cuda_copy,gdr_copy \
+        -x UCX_RNDV_THRESH=8192 \
+        osu_bw -x 100 -i 100 -d cuda H H
+
+echo "Device: RDMA + GDRCOPY"
+mpirun  -x UCX_IB_GPU_DIRECT_RDMA=1 \
+        -x UCX_RNDV_SCHEME=get_zcopy \
+        -x UCX_MEMTYPE_CACHE=n \
+        -x UCX_RNDV_THRESH=8192 \
+        -x UCX_TLS=rc,cuda,cuda_copy,gdr_copy \
+        -mca pml ucx \
+        -mca opal_warn_on_missing_libcuda 1 \
+        -mca btl_smcuda_cuda_ipc_verbose 1 \
+        -mca btl_openib_want_cuda_gdr 1 \
+        -mca orte_tmpdir_base $TSE_TMPDIR \
+        -mca orte_base_help_aggregate 0 \
+        -mca btl '^openib' \
+        osu_bw -x 100 -i 100 -d cuda D D
+
+echo "Device: RDMA only"
+mpirun  -x UCX_IB_GPU_DIRECT_RDMA=1 \
+        -x UCX_RNDV_SCHEME=get_zcopy \
+        -x UCX_MEMTYPE_CACHE=n \
+        -x UCX_RNDV_THRESH=8192 \
+        -x UCX_TLS=rc,cuda,cuda_copy \
+        -mca pml ucx \
+        -mca opal_warn_on_missing_libcuda 1 \
+        -mca btl_smcuda_cuda_ipc_verbose 1 \
+        -mca btl_openib_want_cuda_gdr 1 \
+        -mca orte_tmpdir_base $TSE_TMPDIR \
+        -mca orte_base_help_aggregate 0 \
+        -mca btl '^openib' \
+        osu_bw -x 100 -i 100 -d cuda D D
+
+echo "Device: GDR_COPY only"
+mpirun  -x UCX_IB_GPU_DIRECT_RDMA=0 \
+        -x UCX_RNDV_SCHEME=get_zcopy \
+        -x UCX_MEMTYPE_CACHE=n \
+        -x UCX_RNDV_THRESH=8192 \
+        -x UCX_TLS=rc,cuda,cuda_copy,gdr_copy \
+        -mca pml ucx \
+        -mca opal_warn_on_missing_libcuda 1 \
+        -mca btl_smcuda_cuda_ipc_verbose 1 \
+        -mca btl_openib_want_cuda_gdr 1 \
+        -mca orte_tmpdir_base $TSE_TMPDIR \
+        -mca orte_base_help_aggregate 0 \
+        -mca btl '^openib' \
+        osu_bw -x 10i -i 10 -d cuda D D
+
+
+echo "Device: default"
+mpirun  -x UCX_IB_GPU_DIRECT_RDMA=0 \
+        -x UCX_RNDV_SCHEME=get_zcopy \
+        -x UCX_MEMTYPE_CACHE=n \
+        -x UCX_RNDV_THRESH=8192 \
+        -x UCX_TLS=rc,cuda,cuda_copy \
+        -mca pml ucx \
+        -mca opal_warn_on_missing_libcuda 1 \
+        -mca btl_smcuda_cuda_ipc_verbose 1 \
+        -mca btl_openib_want_cuda_gdr 1 \
+        -mca orte_tmpdir_base $TSE_TMPDIR \
+        -mca orte_base_help_aggregate 0 \
+        -mca btl '^openib' \
+        osu_bw -x 10 -i 10 -d cuda D D
diff --git a/sw_stack/discover/sles15/src/2024.04.00/verify_baselibs.sh b/sw_stack/discover/sles15/src/2024.04.00/verify_baselibs.sh
new file mode 100644
index 0000000..4763f7a
--- /dev/null
+++ b/sw_stack/discover/sles15/src/2024.04.00/verify_baselibs.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+source ./basics.sh
+
+cd $DSLSW_BASE/baselibs-$DSLSW_BASELIBS_VER
+make ESMF_COMM=openmpi \
+    BUILD=ESSENTIALS \
+    ALLOW_ARGUMENT_MISMATCH=-fallow-argument-mismatch \
+    prefix=$DSLSW_INSTALL_DIR/baselibs-$DSLSW_BASELIBS_VER/install/x86_64-pc-linux-gnu/Linux \
+    verify