Add steps to cache CUDA and ROCm

Author: nilsfriess

.github/workflows/linux.yml

@@ -16,34 +16,56 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: 'recursive'
+
+    - name: Cache ROCm
+      id: cache-rocm
+      uses: actions/cache@v3
+      with:
+        path: /opt/rocm-${{matrix.rocm_version}}
+        key: ${{runner.os}}-rocm
+
+    - name: Cache CUDA
+      id: cache-cuda
+      uses: actions/cache@v3
+      with:
+        path: /usr/local/cuda-${{matrix.cuda_version}}
+        key: ${{runner.os}}-rocm
+
     - name: install ROCm
+      if: steps.cache-rocm.outputs.cache-hit != 'true'
       run: |
         sudo apt install libnuma-dev cmake unzip
         wget -q -O - https://repo.radeon.com/rocm/rocm.gpg.key | sudo apt-key add -
         echo 'deb [arch=amd64] https://repo.radeon.com/rocm/apt/${{matrix.rocm_version}}/ ubuntu main' | sudo tee /etc/apt/sources.list.d/rocm.list
         sudo apt update
         sudo apt install rocm-dev rocblas
+
     - name: install LLVM
       run: |
         wget https://apt.llvm.org/llvm.sh
         chmod +x llvm.sh
         sudo ./llvm.sh ${{matrix.clang_version}}
         sudo apt install libclang-${{matrix.clang_version}}-dev clang-tools-${{matrix.clang_version}} libomp-${{matrix.clang_version}}-dev
+
     - name: install boost from apt
       run: |
         sudo apt update
         sudo apt install libboost-all-dev
+
     - name: install CUDA
+      if: steps.cache-cuda.outputs.cache-hit != 'true'
       run: |
         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 OpenSYCL
       run: |
         cd
@@ -60,12 +82,14 @@ jobs:
               -DROCM_PATH=/opt/rocm-${{matrix.rocm_version}} \
               -DCUDA_PATH=/usr/local/cuda-${{matrix.cuda_version}} ..
         make -j2 install
+
     - name: install LAPACK (for CBLAS)
       run: |
         cd
         git clone https://github.com/Reference-LAPACK/lapack.git
         cmake -S . -B build -DCMAKE_INSTALL_LIBDIR=$(pwd)/install -DBUILD_SHARED_LIBS=ON -DCBLAS=ON
         cmake --build build -j2 --target install
+
     - name: clone oneMKL
       run: |
         cd