diff --git a/.github/workflows/buildcupy.yaml b/.github/workflows/buildcupy.yaml
index 56f917f8..fc8c5e12 100644
--- a/.github/workflows/buildcupy.yaml
+++ b/.github/workflows/buildcupy.yaml
@@ -10,7 +10,9 @@ on:
 
 jobs:
   build:
-    runs-on: self-hosted
+    runs-on:
+      - self-hosted
+      - exouser
     steps:
       - name: Check out source repository
         uses: actions/checkout@v6
@@ -22,35 +24,25 @@ jobs:
           python-version: 3.11
       - name: Install dependencies and pylops
         run: |
-          srun --account=yuxilab -n 1 -N 1 --gres=gpu:L40S:1 bash -c '
-            uv sync --locked  --extra advanced \
-              --extra stat --extra gpu-cu12 \
-              --extra deep-cu128 --all-groups
-          '
+          uv sync --locked --extra advanced \
+            --extra stat --extra gpu-cu12 \
+            --extra deep-cu128 --all-groups
           echo "done!"
-      - name: Install CUDA 12.8 toolkit
+      - name: Use local CUDA 12.8 toolkit
         run: |
-          srun --account=yuxilab -n 1 -N 1 --gres=gpu:L40S:1 bash -c '
-            # Currently, the NVIDIA GPU drivers on the self-hosted runner
-            # and the CUDA installation in CUDA_HOME require different PTX versions
-            # (8.7 and 8.8, respectively). CUDA and NVCC are temporarely
-            # installed in the uv environment, and the CUDA paths are set in
-            # the test command, to work around this issue.
-            uv add nvidia-cuda-nvcc-cu12==12.8.*
-            # Numba resolves libNVVM via CUDA_HOME and needs a versioned
-            # libnvvm.so.N (the pip wheel only ships a bare libnvvm.so), so
-            # add the symlink once here against the wheel-provided toolkit.
-            ln -sf libnvvm.so .venv/lib/python3.11/site-packages/nvidia/cuda_nvcc/nvvm/lib64/libnvvm.so.4
-          '
+          if [ ! -d "$HOME/local/cuda" ]; then
+            echo "CUDA 12.8 toolkit not found at $HOME/local/cuda"
+            exit 1
+          fi
+          echo "CUDA_HOME=$HOME/local/cuda" >> "$GITHUB_ENV"
           echo "done!"
       - name: Test with pytest
         run: |
-          srun --account=yuxilab -n 1 -N 1 --gres=gpu:L40S:1 bash -c '
-            # Use the pip-installed CUDA 12.8 toolkit (matches the 12.8 driver),
-            # not any system CUDA on the runner, so numba emits PTX <= 8.7.
-            export CUDA_HOME="$PWD/.venv/lib/python3.11/site-packages/nvidia/cuda_nvcc"
-            export CUPY_PYLOPS=1
-            export TEST_CUPY_PYLOPS=1
-            uv run pytest --color=yes pytests/
-          '
+          # Use the local CUDA 12.8 toolchain from $HOME/local/cuda.
+          export CUDA_HOME="${CUDA_HOME:-$HOME/local/cuda}"
+          export CUPY_PYLOPS=1
+          export TEST_CUPY_PYLOPS=1
+          export PATH="$CUDA_HOME/bin:$PATH"
+          export LD_LIBRARY_PATH="$CUDA_HOME/lib64:$LD_LIBRARY_PATH"
+          uv run pytest --color=yes pytests/
           echo "done!"