CUDA CI: Ubuntu 20.04+ (#3496)

Migrate CUDA CI to use Ubuntu 18.04 -> 20.04

Author: ax3l

.github/workflows/cuda.yml

@@ -12,8 +12,8 @@ jobs:
 #   https://github.com/ComputationalRadiationPhysics/picongpu/blob/0.5.0/share/picongpu/dockerfiles/ubuntu-1604/Dockerfile
 #   https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/
   build_nvcc:
-    name: NVCC 11.0.2 SP
-    runs-on: ubuntu-18.04
+    name: NVCC 11.0.3 SP
+    runs-on: ubuntu-20.04
     if: github.event.pull_request.draft == false
     env:
       CXXFLAGS: "-Werror"
@@ -30,7 +30,7 @@ jobs:
         python-version: '3.x'
     - name: install dependencies
       run: |
-        .github/workflows/dependencies/nvcc11.sh
+        .github/workflows/dependencies/nvcc11-0.sh
     - name: CCache Cache
       uses: actions/cache@v2
       # - once stored under a key, they become immutable (even if local cache path content changes)
@@ -83,14 +83,14 @@ jobs:
   # make sure legacy build system continues to build, i.e., that we don't forget
   # to add new .cpp files
   build_nvcc_gnumake:
-    name: NVCC 11.0.2 GNUmake
-    runs-on: ubuntu-18.04
+    name: NVCC 11.8.0 GNUmake
+    runs-on: ubuntu-20.04
     if: github.event.pull_request.draft == false
     steps:
     - uses: actions/checkout@v2
     - name: install dependencies
       run: |
-        .github/workflows/dependencies/nvcc11.sh
+        .github/workflows/dependencies/nvcc11-8.sh
     - name: CCache Cache
       uses: actions/cache@v2
       # - once stored under a key, they become immutable (even if local cache path content changes)

.github/workflows/dependencies/nvcc11.sh renamed to .github/workflows/dependencies/nvcc11-0.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Copyright 2020 The WarpX Community
+# Copyright 2020-2022 The WarpX Community
 #
 # License: BSD-3-Clause-LBNL
 # Authors: Axel Huebl
@@ -21,8 +21,10 @@ sudo apt-get install -y \
     pkg-config          \
     wget
 
-sudo apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/3bf863cc.pub
-echo "deb https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64 /" \
+wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/cuda-ubuntu2004.pin
+sudo mv cuda-ubuntu2004.pin /etc/apt/preferences.d/cuda-repository-pin-600
+sudo apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/3bf863cc.pub
+echo "deb https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/ /" \
     | sudo tee /etc/apt/sources.list.d/cuda.list
 
 sudo apt-get update

.github/workflows/dependencies/nvcc11-8.sh

@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+#
+# Copyright 2020-2022 The WarpX Community
+#
+# License: BSD-3-Clause-LBNL
+# Authors: Axel Huebl
+
+set -eu -o pipefail
+
+sudo apt-get -qqq update
+sudo apt-get install -y \
+    build-essential     \
+    ca-certificates     \
+    cmake               \
+    gnupg               \
+    libhiredis-dev      \
+    libopenmpi-dev      \
+    libzstd-dev         \
+    ninja-build         \
+    openmpi-bin         \
+    pkg-config          \
+    wget
+
+wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/cuda-keyring_1.0-1_all.deb
+sudo dpkg -i cuda-keyring_1.0-1_all.deb
+
+sudo apt-get update
+sudo apt-get install -y          \
+    cuda-command-line-tools-11-8 \
+    cuda-compiler-11-8           \
+    cuda-cupti-dev-11-8          \
+    cuda-minimal-build-11-8      \
+    cuda-nvml-dev-11-8           \
+    cuda-nvtx-11-8               \
+    libcufft-dev-11-8            \
+    libcurand-dev-11-8
+sudo ln -s cuda-11.8 /usr/local/cuda
+
+# if we run out of temporary storage in CI:
+#du -sh /usr/local/cuda-11.8
+#echo "+++ REDUCING CUDA Toolkit install size +++"
+#sudo rm -rf /usr/local/cuda-11.8/targets/x86_64-linux/lib/libcu{fft,pti,rand}_static.a
+#sudo rm -rf /usr/local/cuda-11.8/targets/x86_64-linux/lib/libnvperf_host_static.a
+#du -sh /usr/local/cuda-11.8/
+#df -h
+
+# cmake-easyinstall
+#
+sudo curl -L -o /usr/local/bin/cmake-easyinstall https://git.io/JvLxY
+sudo chmod a+x /usr/local/bin/cmake-easyinstall
+export CEI_SUDO="sudo"
+export CEI_TMP="/tmp/cei"
+
+# ccache 4.2+
+#
+CXXFLAGS="" cmake-easyinstall --prefix=/usr/local \
+    git+https://github.com/ccache/[email protected] \
+    -DCMAKE_BUILD_TYPE=Release        \
+    -DENABLE_DOCUMENTATION=OFF        \
+    -DENABLE_TESTING=OFF              \
+    -DWARNINGS_AS_ERRORS=OFF