downgrade cuda version to 11.6

Author: normallytangent

.github/workflows/linux.yml

@@ -45,9 +45,15 @@ jobs:
         sudo ./b2 install -j4
     - name: install CUDA
       run: |
-       cd
-       wget https://developer.download.nvidia.com/compute/cuda/11.8.0/local_installers/cuda_11.8.0_520.61.05_linux.run
-       sudo sh cuda_11.8.0_520.61.05_linux.run --override --silent --toolkit
+        cd
+        wget https://developer.download.nvidia.com/compute/cuda/11.6.0/local_installers/cuda_11.6.0_510.39.01_linux.run
+        sudo sh cuda_11.6.0_510.39.01_linux.run --override --silent --toolkit
+        cd
+    - name: test CUDA and cuBLAS
+      run: |
+         /usr/local/cuda/bin/nvcc --version
+         cat /usr/local/cuda/version.json
+         cat /usr/local/cuda/include/cublas.h | grep CUBLAS
     - name: build hipSYCL
       run: |
         cd
@@ -84,7 +90,7 @@ jobs:
         cd oneMKL
         mkdir build
         cd build
-        cmake -DCUDA_CUDA_LIBRARY=/usr/local/cuda-11.8/lib64/stubs/libcuda.so \
+        cmake -DCUDA_CUDA_LIBRARY=/usr/local/cuda-11.6/lib64/stubs/libcuda.so \
               -DENABLE_CUBLAS_BACKEND=True \
               -DENABLE_CURAND_BACKEND=False \
               -DENABLE_CUSOLVER_BACKEND=False \