diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 00000000..a5c35dbf
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,22 @@
+name: Daily Building Script Execution
+
+on:
+  workflow_dispatch:
+  schedule:
+    # Runs at 1:00 AM every day
+    - cron: '0 1 * * *'
+
+jobs:
+  run-shell-script:
+    runs-on: self-hosted
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Run shell script
+      run: |
+        tar_name=chatlearn-$(date +%F).tar.gz
+        tar czvf /tmp/${tar_name} .
+        ossutil64 -i ${{ secrets.OSS_AK_ID }} -k ${{ secrets.OSS_AK_SECRET }} -e ${{ secrets.OSS_ENDPOINT }}  cp -r /tmp/${tar_name} ${{ secrets.OSS_BUCKET }}/regression/chatlearn/src/
+
diff --git a/.github/workflows/pylint.yml b/.github/workflows/pylint.yml
index 0715d21f..4ccfecc3 100644
--- a/.github/workflows/pylint.yml
+++ b/.github/workflows/pylint.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10"]
+        python-version: ["3.10"]
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
diff --git a/.github/workflows/unit_test.yml b/.github/workflows/unit_test.yml
new file mode 100644
index 00000000..4fae9ed1
--- /dev/null
+++ b/.github/workflows/unit_test.yml
@@ -0,0 +1,26 @@
+name: Unit Tests
+
+on: 
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+      - main
+    tags:
+      - v[0-9]+.[0-9]+.[0-9]+
+
+
+jobs:
+  run-shell-script:
+    runs-on: self-hosted
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Run unit test
+      run: |
+        docker pull $UT_IMAGE
+        docker run -v $PWD:$PWD -w $PWD --net host --ipc host --shm-size 80G -t --rm --gpus all $UT_IMAGE bash -c 'make test'
+      env: 
+        UT_IMAGE: ${{ secrets.UT_IMAGE }}
diff --git a/tests/run_tests.sh b/tests/run_tests.sh
index 302fcafe..0a76fb44 100644
--- a/tests/run_tests.sh
+++ b/tests/run_tests.sh
@@ -1,12 +1,8 @@
 #!/bin/bash
-set -exo pipefail
 export PYTHONPATH=$(cd ../ && pwd):${PWD}:${PYTHONPATH}
 CDIR="$(cd "$(dirname "$0")" ; pwd -P)"
 LOGFILE=/tmp/pytorch_py_test.log
 rm -rf core*
-MAX_GRAPH_SIZE=500
-GRAPH_CHECK_FREQUENCY=100
-VERBOSITY=2
 
 [ -z "$MASTER_ADDR" ] && export MASTER_ADDR=localhost
 [ -z "$WORLD_SIZE" ] && export WORLD_SIZE=1
@@ -34,12 +30,6 @@ do
     L)
       LOGFILE=
       ;;
-    M)
-      MAX_GRAPH_SIZE=$OPTARG
-      ;;
-    C)
-      GRAPH_CHECK_FREQUENCY=$OPTARG
-      ;;
     V)
       VERBOSITY=$OPTARG
       ;;
@@ -49,11 +39,25 @@ shift $(($OPTIND - 1))
 
 
 function run_test {
+  attempts=0
+  while [[ $attempts -lt 3 ]]; do
+      rm -rf core*
+      ray stop
+      "$@"
+      if [[ $? -eq 0 ]]; then
+          echo "$@ success"
+          break
+      fi
+      
+      attempts=$((attempts + 1))
+      if [[ $attempts -lt 3 ]]; then
+          echo "$file fail, retry ($attempts/3)..."
+      else
+          echo "$file fail, exit ..."
+	  exit 1
+      fi
+  done
   ray stop
-  "$@"
-  exit_code=$? ; echo "Exit code: $exit_code"
-  ray stop
-  echo $@
 }
 
 
diff --git a/tests/test_flat_tensors.py b/tests/test_flat_tensors.py
index ebe6c1e8..a15ebcdd 100644
--- a/tests/test_flat_tensors.py
+++ b/tests/test_flat_tensors.py
@@ -20,10 +20,10 @@ def run_flat_tensors_test_with_constructor(self, constructor):
 
         measure1 = torch.cuda.memory_allocated()
         # Randomly generate some tensors.
-        n = 64
+        n = 4
         n_dims = [random.randint(1, 4) for _ in range(n)]
         shapes = [
-            [random.randint(0, 1 << 8) for _ in range(dim)]
+            [random.randint(0, 8) for _ in range(dim)]
             for dim in n_dims
         ]