Add gpuCI GPU testing, automatic GPU detection, and support for more compilers:

* CMake: Add support for detecting the compute archs of the GPUs in your system
  at configure time.
* CMake: Update FindTBB.cmake to support the newer oneTBB.
* gpuCI: Add a GPU node configuration that builds and tests as little as possible.
* gpuCI: Cleanup logic for different build and test configurations.
* gpuCI: Fix an unfortunate typo in `determine_build_parallelism.bash` which
  led to the parallelism level not being set.
* gpuCI: Add support for NVC++.
* gpuCI: Update to CUDA 11.1 and Ubuntu 20.04.
* gpuCI: Add NVC++ and ICC configurations to the CPU axis file.
* gpuCI: Add a GPU axis file.
* gpuCI: Increase the desired memory per build thread to 4GB.
* gpuCI: Add a -j switch which controls build parallelism to `ci/local/build.bash`.
* gpuCI: Add support for CMake build types.

Author: brycelelbach

ci/axis/cpu.yml

@@ -1,9 +1,27 @@
+# Copyright (c) 2018-2020 NVIDIA Corporation
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+# Released under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+
+SDK_TYPE:
+  - cuda
+  - nvhpc
+
+SDK_VER:
+  - 11.0-devel
+  - 20.9-devel
+
+OS_TYPE:
+  - ubuntu
+
 OS_VER:
-  - ubuntu18.04
+  - 20.04
 
 CXX_TYPE:
-  - gcc
+  - nvcxx
   - clang
+  - gcc
+  - icc
 
 CXX_VER:
   - 5
@@ -12,17 +30,67 @@ CXX_VER:
   - 8
   - 9
   - 10
+  - 20.9
+  - latest
 
 exclude:
-  # Unsupported compiler version
+  # Excludes by `SDK_TYPE`.
+  - CXX_TYPE: gcc
+    SDK_TYPE: nvhpc
+  - CXX_TYPE: clang
+    SDK_TYPE: nvhpc
+  - CXX_TYPE: icc
+    SDK_TYPE: nvhpc
+  - CXX_TYPE: nvcxx
+    SDK_TYPE: cuda
+  # Excludes by `SDK_VER`.
+  - SDK_TYPE: cuda
+    SDK_VER: 20.9-devel
+  - SDK_TYPE: nvhpc
+    SDK_VER: 11.0-devel
+  # Excludes by `CXX_VER`.
+  - CXX_TYPE: nvcxx
+    CXX_VER: 5
+  - CXX_TYPE: nvcxx
+    CXX_VER: 6
+  - CXX_TYPE: nvcxx
+    CXX_VER: 7
+  - CXX_TYPE: nvcxx
+    CXX_VER: 8
+  - CXX_TYPE: nvcxx
+    CXX_VER: 9
+  - CXX_TYPE: nvcxx
+    CXX_VER: 10
+  - CXX_TYPE: nvcxx
+    CXX_VER: latest
+  - CXX_TYPE: gcc
+    CXX_VER: 10
+  - CXX_TYPE: gcc
+    CXX_VER: 20.9
+  - CXX_TYPE: gcc
+    CXX_VER: latest
   - CXX_TYPE: clang
     CXX_VER: 5
-  # This config is broken in the docker image: https://github.com/NVIDIA/cccl/issues/6
   - CXX_TYPE: clang
     CXX_VER: 6
-  # Needs newer nvcc in image, https://github.com/NVIDIA/cccl/issues/7
   - CXX_TYPE: clang
     CXX_VER: 10
-  # Config broken in image: https://github.com/NVIDIA/cccl/issues/8
-  - CXX_TYPE: gcc
+  - CXX_TYPE: clang
+    CXX_VER: 20.9
+  - CXX_TYPE: clang
+    CXX_VER: latest
+  - CXX_TYPE: icc
+    CXX_VER: 5
+  - CXX_TYPE: icc
+    CXX_VER: 6
+  - CXX_TYPE: icc
+    CXX_VER: 7
+  - CXX_TYPE: icc
+    CXX_VER: 8
+  - CXX_TYPE: icc
+    CXX_VER: 9
+  - CXX_TYPE: icc
     CXX_VER: 10
+  - CXX_TYPE: icc
+    CXX_VER: 20.9
+

ci/axis/gpu.yml

@@ -0,0 +1,23 @@
+# Copyright (c) 2018-2020 NVIDIA Corporation
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+# Released under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+
+SDK_TYPE:
+  - cuda
+
+SDK_VER:
+  - 11.0-devel
+
+OS_TYPE:
+  - ubuntu
+
+OS_VER:
+  - 20.04
+
+CXX_TYPE:
+  - gcc
+
+CXX_VER:
+  - 7
+