diff --git a/deepray/__init__.py b/deepray/__init__.py
index 7f9ba80b..3447f5a1 100644
--- a/deepray/__init__.py
+++ b/deepray/__init__.py
@@ -48,7 +48,7 @@ def init():
   logger.debug(f"sys.argv = {sys.argv}")  # sys.argv from Horovod
   flags.FLAGS(sys.argv, known_only=True)
 
-  gpus = tf.config.experimental.list_physical_devices("GPU")
+  gpus = tf.config.list_physical_devices("GPU")
   for gpu in gpus:
     tf.config.experimental.set_memory_growth(gpu, True)
 
diff --git a/deepray/custom_ops/BUILD b/deepray/custom_ops/BUILD
index 78b85040..ab0bc47f 100644
--- a/deepray/custom_ops/BUILD
+++ b/deepray/custom_ops/BUILD
@@ -14,7 +14,7 @@ py_library(
         # "//deepray/custom_ops/multiplex_4:multiplex_4_op",
         "//deepray/custom_ops/parquet_dataset",
         "//deepray/custom_ops/seq2seq",
-        # "//deepray/custom_ops/simple_hash_table",
+        "//deepray/custom_ops/simple_hash_table",
         # "//deepray/custom_ops/sleep:sleep_op",
         "//deepray/custom_ops/training_ops",
         "//deepray/custom_ops/unique_ops",
diff --git a/deepray/custom_ops/simple_hash_table/simple_hash_table_kernel.cc b/deepray/custom_ops/simple_hash_table/simple_hash_table_kernel.cc
index a603fee0..059dc51a 100644
--- a/deepray/custom_ops/simple_hash_table/simple_hash_table_kernel.cc
+++ b/deepray/custom_ops/simple_hash_table/simple_hash_table_kernel.cc
@@ -93,8 +93,6 @@ class SimpleHashTableResource : public ::tensorflow::ResourceBase {
   Status Import(const Tensor& keys, const Tensor& values) {
     const auto key_values = keys.flat<K>();
     const auto value_values = values.flat<V>();
-    LOG(INFO) << "key_values = " << key_values;
-    LOG(INFO) << "value_values = " << value_values;
 
     mutex_lock l(mu_);
     table_.clear();
diff --git a/tools/build_base_container.sh b/tools/build_base_container.sh
index e325a461..12278c54 100755
--- a/tools/build_base_container.sh
+++ b/tools/build_base_container.sh
@@ -9,10 +9,7 @@ OS_VERSION=${4:-"20.04"}
 
 docker build \
     -f tools/docker/base_container.Dockerfile \
-    --network=host \
     --progress=plain \
-    --build-arg http_proxy=http://127.0.0.1:7890 \
-    --build-arg https_proxy=http://127.0.0.1:7890 \
     --build-arg CUDA_VERSION=${CUDA_VERSION} \
     --build-arg TF_VERSION=${TF_VERSION} \
     --build-arg PY_VERSION=${PY_VERSION} \
diff --git a/tools/build_dev_container.sh b/tools/build_dev_container.sh
index 66653e57..f452ec2e 100755
--- a/tools/build_dev_container.sh
+++ b/tools/build_dev_container.sh
@@ -4,8 +4,8 @@ set -x -e
 
 PY_VERSION=${1:-"3.10"}
 TF_VERSION=${2:-"2.15.1"}
-OS_VERSION=${3:-"20.04"}
-CUDA_VERSION=${4:-"12.2.2"}
+CUDA_VERSION=${3:-"12.2.2"}
+OS_VERSION=${4:-"20.04"}
 
 docker build \
     -f tools/docker/dev_container.Dockerfile \
diff --git a/tools/docker/base_container.Dockerfile b/tools/docker/base_container.Dockerfile
index d349ff29..794511d2 100644
--- a/tools/docker/base_container.Dockerfile
+++ b/tools/docker/base_container.Dockerfile
@@ -1,3 +1,4 @@
+# syntax=docker/dockerfile:1.4
 # Copyright 2025 The Deepray Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -46,6 +47,8 @@ ARG PY_VERSION
 
 # Setup openmpi
 COPY --from=openmpi_builder /opt/openmpi /opt/openmpi
+COPY --from=openmpi_builder /opt/ucx /opt/ucx
+COPY --from=openmpi_builder /opt/ucc /opt/ucc
 ENV PATH=${PATH}:/opt/openmpi/bin \
     LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/opt/openmpi/lib
 RUN mpirun --version
diff --git a/tools/docker/dev_container.Dockerfile b/tools/docker/dev_container.Dockerfile
index 237682b8..b31a9d4d 100644
--- a/tools/docker/dev_container.Dockerfile
+++ b/tools/docker/dev_container.Dockerfile
@@ -1,4 +1,4 @@
-#syntax=docker/dockerfile:1.4
+# syntax=docker/dockerfile:1.4
 # Copyright 2025 The Deepray Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -58,6 +58,8 @@ ARG PY_VERSION
 
 # Setup openmpi
 COPY --from=openmpi_builder /opt/openmpi /opt/openmpi
+COPY --from=openmpi_builder /opt/ucx /opt/ucx
+COPY --from=openmpi_builder /opt/ucc /opt/ucc
 ENV PATH=${PATH}:/opt/openmpi/bin \
     LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/opt/openmpi/lib
 RUN mpirun --version
diff --git a/tools/install_deps/install_cmake.sh b/tools/install_deps/install_cmake.sh
index faaaaba0..f382423c 100644
--- a/tools/install_deps/install_cmake.sh
+++ b/tools/install_deps/install_cmake.sh
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 # ==============================================================================
-set -x -e
+set -xeuo pipefail
 
 CMAKE_VERSION=${1:-"3.31.0"}
 
@@ -27,12 +27,12 @@ rm /tmp/cmake-install.sh
 cat >bashrc.txt <<'EOF'
 export CMAKE_HOME=/opt/cmake
 export PATH="${CMAKE_HOME}/bin:${PATH}"
-export LD_LIBRARY_PATH="${CMAKE_HOME}/lib:${LD_LIBRARY_PATH}"
+export LD_LIBRARY_PATH="${CMAKE_HOME}/lib${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}"
 EOF
 cat bashrc.txt >>/root/.bashrc
 
 export CMAKE_HOME=/opt/cmake
 export PATH="${CMAKE_HOME}/bin:${PATH}"
-export LD_LIBRARY_PATH="${CMAKE_HOME}/lib:${LD_LIBRARY_PATH}"
+export LD_LIBRARY_PATH="${CMAKE_HOME}/lib${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}"
 
 cmake --version
diff --git a/tools/install_deps/install_openmpi.sh b/tools/install_deps/install_openmpi.sh
index 6dca54ce..fb4c1f12 100644
--- a/tools/install_deps/install_openmpi.sh
+++ b/tools/install_deps/install_openmpi.sh
@@ -13,21 +13,47 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 # ==============================================================================
-set -x -e
+set -xeuo pipefail
 
 OPENMPI_VERSION=${1:-"5.0.8"}
+UCX_VERSION=${2:-"1.19.0"}
+UCC_VERSION=${3:-"1.5.1"}
+export BUILD_DIR=/tmp
+export INSTALL_DIR=/opt
+export UCX_DIR=${INSTALL_DIR}/ucx
+export UCC_DIR=${INSTALL_DIR}/ucc
+export OMPI_DIR=${INSTALL_DIR}/openmpi
 
 apt-get update &&
     apt-get install --no-install-recommends --yes \
-        wget build-essential
+        wget build-essential autoconf automake libtool git
 
-# Install Open MPI
-mkdir /tmp/openmpi &&
-    cd /tmp/openmpi
+# Install UCX
+mkdir /tmp/ucx && cd /tmp/ucx
+wget --no-check-certificate --progress=dot:mega -O ucx-${UCX_VERSION}.tar.gz https://github.com/openucx/ucx/archive/refs/tags/v${UCX_VERSION}.tar.gz
+tar -zxf ucx-${UCX_VERSION}.tar.gz
+cd ucx-${UCX_VERSION}
+./autogen.sh
+./configure --prefix=${UCX_DIR}
+make -j $(nproc)
+make install
+
+# Install UCC
+mkdir /tmp/ucc && cd /tmp/ucc
+wget --no-check-certificate --progress=dot:mega -O ucc-${UCC_VERSION}.tar.gz https://github.com/openucx/ucc/archive/refs/tags/v${UCC_VERSION}.tar.gz
+tar -zxf ucc-${UCC_VERSION}.tar.gz
+cd ucc-${UCC_VERSION}
+./autogen.sh
+./configure --prefix=${UCC_DIR} --with-ucx=${UCX_DIR}
+make -j $(nproc)
+make install
+
+# Install OpenMPI
+mkdir /tmp/openmpi && cd /tmp/openmpi
 wget --no-check-certificate --progress=dot:mega -O openmpi-${OPENMPI_VERSION}.tar.gz https://download.open-mpi.org/release/open-mpi/v5.0/openmpi-${OPENMPI_VERSION}.tar.gz
 tar -zxf openmpi-${OPENMPI_VERSION}.tar.gz
 cd openmpi-${OPENMPI_VERSION}
-./configure --enable-orterun-prefix-by-default --prefix=/opt/openmpi
+./configure --enable-orterun-prefix-by-default --prefix=${OMPI_DIR} --with-ucx=${UCX_DIR} --with-ucc=${UCC_DIR}
 make -j $(nproc)
 make install
 ldconfig
@@ -36,13 +62,13 @@ ldconfig
 cat >bashrc.txt <<'EOF'
 export OPENMPI_HOME=/opt/openmpi
 export PATH="${OPENMPI_HOME}/bin:${PATH}"
-export LD_LIBRARY_PATH="${OPENMPI_HOME}/lib:${LD_LIBRARY_PATH}"
+export LD_LIBRARY_PATH="${OPENMPI_HOME}/lib${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}"
 EOF
 cat bashrc.txt >>/root/.bashrc
 
 export OPENMPI_HOME=/opt/openmpi
 export PATH="${OPENMPI_HOME}/bin:${PATH}"
-export LD_LIBRARY_PATH="${OPENMPI_HOME}/lib:${LD_LIBRARY_PATH}"
+export LD_LIBRARY_PATH="${OPENMPI_HOME}/lib${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}"
 
 mpirun --version &&
-    rm -rf /tmp/openmpi
+    rm -rf ${BUILD_DIR}
diff --git a/tools/install_deps/install_python.sh b/tools/install_deps/install_python.sh
index cc388959..a2dfaae4 100644
--- a/tools/install_deps/install_python.sh
+++ b/tools/install_deps/install_python.sh
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 # ==============================================================================
-set -x -e
+set -xeuo pipefail
 
 PY_VERSION=${1:-"3.10"}