diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f68eb6e35..eeef21aea 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -115,6 +115,31 @@ jobs:
       - name: Test sgx prover
         run: make test
 
+  build-test-sgx-hardware:
+    name: Build and test sgx in hardware
+    runs-on: [self-hosted, sgx, linux]
+    timeout-minutes: 120
+    env:
+      TARGET: sgx
+      CI: 1
+      EDMM: 0
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+      - name: Install cargo-binstall
+        uses: cargo-bins/cargo-binstall@v1.6.4
+      - name: Install sgx
+        run: make install
+      - name: Build sgx prover
+        run: make build
+      - name: Test sgx prover
+        run: make test
+
   build-test-sgx-with-docker:
     name: Build and test sgx with Docker
     runs-on: ubuntu-latest
diff --git a/script/install.sh b/script/install.sh
index a60b55b56..b11707bf5 100755
--- a/script/install.sh
+++ b/script/install.sh
@@ -32,9 +32,15 @@ fi
 
 # SGX
 if [ -z "$1" ] || [ "$1" == "sgx" ]; then
-	# For SGX, install gramine: https://github.com/gramineproject/gramine.
-	wget -O /tmp/gramine.deb https://packages.gramineproject.io/pool/main/g/gramine/gramine_1.6.2_amd64.deb
-	sudo apt install /tmp/gramine.deb
+    # also check if sgx is already installed
+    if command -v gramine-sgx >/dev/null 2>&1; then
+        echo "gramine already installed"
+    else
+        echo "gramine not installed, installing..."
+        # For SGX, install gramine: https://github.com/gramineproject/gramine.
+        wget -O /tmp/gramine.deb https://packages.gramineproject.io/pool/main/g/gramine/gramine_1.6.2_amd64.deb
+        sudo apt install -y /tmp/gramine.deb
+    fi
 fi
 # RISC0
 if [ -z "$1" ] || [ "$1" == "risc0" ]; then