diff --git a/experiments/v4-hq_tokenizer_test/common/setup.sh b/experiments/v4-hq_tokenizer_test/common/setup.sh
new file mode 100644
index 0000000..d7adb0d
--- /dev/null
+++ b/experiments/v4-hq_tokenizer_test/common/setup.sh
@@ -0,0 +1,28 @@
+# Script for setup trainer environment.
+
+module load cuda/12.8/12.8.1
+module load cudnn/9.5/9.5.1
+module load hpcx/2.20
+module load nccl/2.25/2.25.1-1
+# (cliu) Only for cuda/12.8; there is no folder for cuda/12.8 in cudnn/9.5.1
+export CUDNN_HOME=/apps/cudnn/9.5.1/cuda12.0
+export CUDNN_PATH=$CUDNN_HOME
+export LD_LIBRARY_PATH=/apps/cudnn/9.5.1/cuda12.0/lib:$LD_LIBRARY_PATH
+export CPATH=/apps/cudnn/9.5.1/cuda12.0/include:$CPATH
+export LIBRARY_PATH=/apps/cudnn/9.5.1/cuda12.0/lib:$LIBRARY_PATH
+echo $(module list)
+
+## Debug/logging flags
+export LOGLEVEL=INFO
+# export NCCL_DEBUG=WARN
+export NCCL_DEBUG=INFO
+export NCCL_DEBUG_SUBSYS=WARN
+export PYTHONFAULTHANDLER=1
+export CUDA_DEVICE_MAX_CONNECTIONS=1
+export CUDA_LAUNCH_BLOCKING=0
+export CUDNN_LOGDEST_DBG=stderr
+export CUDNN_LOGERR_DBG=1
+
+export NVTE_FLASH_ATTN=1
+export NVTE_DEBUG=1
+export NVTE_DEBUG_LEVEL=2
\ No newline at end of file
diff --git a/experiments/v4-hq_tokenizer_test/installer/install_megatron.sh b/experiments/v4-hq_tokenizer_test/installer/install_megatron.sh
new file mode 100755
index 0000000..ac58ff0
--- /dev/null
+++ b/experiments/v4-hq_tokenizer_test/installer/install_megatron.sh
@@ -0,0 +1,102 @@
+#!/bin/bash
+#PBS -P gcg51557
+#PBS -q R9920251000
+#PBS -v RTYPE=rt_HF
+#PBS -l select=2
+#PBS -l walltime=4:00:00
+#PBS -k n
+#PBS -N 0163_install
+
+set -euo pipefail
+
+EXP_DIR="/groups/gcg51557/experiments/0163_math_midtraining"
+SCRIPT_DIR="${EXP_DIR}/scripts/experiments/v4-hq_tokenizer_test/installer"
+
+mkdir -p ${EXP_DIR}/logs/installer
+
+TIMESTAMP=$(date +%Y%m%d%H%M%S)
+JOBID=${PBS_JOBID%%.*}
+LOGFILE=${EXP_DIR}/logs/installer/$TIMESTAMP-$JOBID.out
+ERRFILE=${EXP_DIR}/logs/installer/$TIMESTAMP-$JOBID.err
+exec > $LOGFILE 2> $ERRFILE
+
+source ${SCRIPT_DIR}/../common/setup.sh
+
+cd ${EXP_DIR}
+mkdir -p src
+pushd src
+
+echo "Install Python"
+mkdir -p python
+git clone https://github.com/python/cpython -b v3.12.8
+PYTHONPATH=$(pwd)/python
+pushd cpython
+  ./configure --prefix=${PYTHONPATH} --enable-optimizations
+  make -j 64
+  make altinstall
+popd
+
+echo "Setup venv"
+${PYTHONPATH}/bin/python3.12 -m venv ../venv
+source ../venv/bin/activate
+pip install --upgrade pip
+
+echo "Install torch"
+# pip install torch torchvision --index-url https://download.pytorch.org/whl/cu126
+pip install --pre torch torchvision torchaudio --index-url https://download.pytorch.org/whl/nightly/cu128
+
+echo "Install requirements"
+pip install -r ${SCRIPT_DIR}/requirements.txt
+
+echo "Install apex"
+git clone --recurse-submodules https://github.com/NVIDIA/apex
+pushd apex
+  pip install -v \
+    --no-cache-dir \
+    --no-build-isolation \
+    --config-settings "--build-option=--cpp_ext" \
+    --config-settings "--build-option=--cuda_ext" \
+    ./
+popd
+
+# echo "Install flash-attn"
+git clone https://github.com/Dao-AILab/flash-attention.git
+pushd flash-attention
+  git checkout 27f501d && cd hopper/ && python setup.py install
+  python_path=`python -c "import site; print(site.getsitepackages()[0])"`
+  mkdir -p $python_path/flash_attn_3
+  wget -P $python_path/flash_attn_3 https://raw.githubusercontent.com/Dao-AILab/flash-attention/27f501dbe011f4371bff938fe7e09311ab3002fa/hopper/flash_attn_interface.py
+popd
+
+# pip install \
+#     --no-build-isolation \
+#     --no-cache-dir \
+#     flash-attn
+
+# echo "Install transformer_engine"
+git clone --branch stable --recursive https://github.com/NVIDIA/TransformerEngine.git
+pushd TransformerEngine
+  export NVTE_FRAMEWORK=pytorch
+  pip install .
+popd
+
+# pip install \
+#     --no-build-isolation \
+#     --no-cache-dir \
+#     transformer_engine[pytorch]
+
+echo "Install Megatron-LM"
+git clone https://github.com/llm-jp/Megatron-LM -b v4-old
+pushd Megatron-LM/megatron/core/datasets
+  MEGATRON_HELPER_CPPFLAGS=(
+    -O3 -Wall -shared -std=c++11 -fPIC -fdiagnostics-color
+    $(python -m pybind11 --includes)
+  )
+  MEGATRON_HELPER_EXT=$(${PYTHONPATH}/bin/python3.12-config --extension-suffix)
+  g++ ${MEGATRON_HELPER_CPPFLAGS[@]} helpers.cpp -o helpers_cpp${MEGATRON_HELPER_EXT}
+popd
+
+deactivate
+popd
+
+echo "Done"
diff --git a/experiments/v4-hq_tokenizer_test/installer/requirements.txt b/experiments/v4-hq_tokenizer_test/installer/requirements.txt
new file mode 100644
index 0000000..1f2c672
--- /dev/null
+++ b/experiments/v4-hq_tokenizer_test/installer/requirements.txt
@@ -0,0 +1,14 @@
+accelerate==1.3.0
+cmake==3.31.4
+einops==0.8.1
+ninja==1.11.1.3
+numpy==2.1.2
+packaging==24.2
+pybind11==2.13.6
+regex==2024.11.6
+safetensors==0.5.2
+sentencepiece==0.2.0
+six==1.17.0
+transformers==4.48.3
+wandb==0.19.3
+wheel==0.45.1