update to llvm20

Author: trxcllnt

…tainer/llvm19-cuda12.9/devcontainer.json …tainer/llvm20-cuda12.0/devcontainer.json.devcontainer/llvm19-cuda12.9/devcontainer.json renamed to .devcontainer/llvm20-cuda12.0/devcontainer.json .devcontainer/llvm19-cuda12.9/devcontainer.json renamed to .devcontainer/llvm20-cuda12.0/devcontainer.json

@@ -1,5 +1,5 @@
 {
-  "image": "rapidsai/devcontainers:25.10-cpp-llvm19-cuda12.9",
+  "image": "rapidsai/devcontainers:25.10-cpp-llvm20-cuda12.0",
 
   "hostRequirements": { "gpu": "optional" },
 

…tainer/llvm19-cuda13.0/devcontainer.json …tainer/llvm20-cuda12.9/devcontainer.json.devcontainer/llvm19-cuda13.0/devcontainer.json renamed to .devcontainer/llvm20-cuda12.9/devcontainer.json .devcontainer/llvm19-cuda13.0/devcontainer.json renamed to .devcontainer/llvm20-cuda12.9/devcontainer.json

@@ -1,5 +1,5 @@
 {
-  "image": "rapidsai/devcontainers:25.10-cpp-llvm19-cuda13.0",
+  "image": "rapidsai/devcontainers:25.10-cpp-llvm20-cuda12.9",
 
   "hostRequirements": { "gpu": "optional" },
 

.devcontainer/llvm20-cuda13.0/devcontainer.json

@@ -0,0 +1,70 @@
+{
+  "image": "rapidsai/devcontainers:25.10-cpp-llvm20-cuda13.0",
+
+  "hostRequirements": { "gpu": "optional" },
+
+  "initializeCommand": ["/bin/bash", "-c", "mkdir -p .cache/.{aws,cache,config}"],
+
+  "containerEnv": {
+    "AWS_ROLE_ARN": "arn:aws:iam::279114543810:role/nv-gha-token-sccache-devs",
+    "DEVCONTAINER_UTILS_ENABLE_SCCACHE_DIST": "true",
+    "HISTFILE": "${containerWorkspaceFolder}/.cache/._bash_history",
+    "SCCACHE_BUCKET": "rapids-sccache-devs",
+    "SCCACHE_DIST_AUTH_TOKEN_VAR": "${localEnv:SCCACHE_DIST_AUTH_TOKEN_VAR}",
+    "SCCACHE_DIST_CONNECT_TIMEOUT": "${localEnv:SCCACHE_DIST_CONNECT_TIMEOUT:30}",
+    "SCCACHE_DIST_FALLBACK_TO_LOCAL_COMPILE": "${localEnv:SCCACHE_DIST_FALLBACK_TO_LOCAL_COMPILE:true}",
+    "SCCACHE_DIST_KEEPALIVE_ENABLED": "${localEnv:SCCACHE_DIST_KEEPALIVE_ENABLED:true}",
+    "SCCACHE_DIST_KEEPALIVE_INTERVAL": "${localEnv:SCCACHE_DIST_KEEPALIVE_INTERVAL:20}",
+    "SCCACHE_DIST_KEEPALIVE_TIMEOUT": "${localEnv:SCCACHE_DIST_KEEPALIVE_TIMEOUT:600}",
+    "SCCACHE_DIST_MAX_RETRIES": "${localEnv:SCCACHE_DIST_MAX_RETRIES:4}",
+    "SCCACHE_DIST_REQUEST_TIMEOUT": "${localEnv:SCCACHE_DIST_REQUEST_TIMEOUT:7140}",
+    "SCCACHE_DIST_TOKEN": "${localEnv:SCCACHE_DIST_TOKEN}",
+    "SCCACHE_ERROR_LOG": "/home/coder/stdexec/.cache/sccache.log",
+    "SCCACHE_REGION": "us-east-2",
+    "SCCACHE_S3_KEY_PREFIX": "nvidia-stdexec-dev",
+    "SCCACHE_SERVER_PORT": "4225",
+    "SCCACHE_SERVER_LOG": "${localEnv:SCCACHE_SERVER_LOG:sccache=debug}"
+  },
+
+  "workspaceFolder": "/home/coder/stdexec",
+  "workspaceMount": "source=${localWorkspaceFolder},target=/home/coder/stdexec,type=bind,consistency=consistent",
+  "mounts": [
+    "source=${localWorkspaceFolder}/.cache/.aws,target=/home/coder/.aws,type=bind,consistency=consistent",
+    "source=${localWorkspaceFolder}/.cache/.cache,target=/home/coder/.cache,type=bind,consistency=consistent",
+    "source=${localWorkspaceFolder}/.cache/.config,target=/home/coder/.config,type=bind,consistency=consistent"
+  ],
+
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "augustocdias.tasks-shell-input",
+        "ericniebler.erics-build-output-colorizer"
+      ],
+      "settings": {
+        "debug.toolBarLocation": "docked",
+        "editor.hover.delay": 500,
+        "editor.hover.sticky": true,
+        "editor.inlayHints.enabled": "off",
+        "files.autoSave": "off",
+        "files.trimFinalNewlines": true,
+        "files.insertFinalNewline": true,
+        "files.trimTrailingWhitespace": true,
+        "[c]": {
+          "editor.tabSize": 2,
+          "editor.formatOnSave": false,
+          "editor.formatOnSaveMode": "file"
+        },
+        "[cpp]": {
+          "editor.tabSize": 2,
+          "editor.formatOnSave": false,
+          "editor.formatOnSaveMode": "file"
+        },
+        "[cuda-cpp]": {
+          "editor.tabSize": 2,
+          "editor.formatOnSave": false,
+          "editor.formatOnSaveMode": "file"
+        }
+      }
+    }
+  }
+}

.github/workflows/ci.gpu.yml

@@ -20,8 +20,8 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - { name: "clang 19",   cuda: "12.9", cxx: "clang++", build: "Release", tag: "llvm19-cuda12.9", gpu: "v100", sm: "70", driver: "latest", arch: "amd64" }
-          - { name: "clang 19",   cuda: "13.0", cxx: "clang++", build: "Release", tag: "llvm19-cuda13.0", gpu: "v100", sm: "70", driver: "latest", arch: "amd64" }
+          - { name: "clang 20",   cuda: "12.0", cxx: "clang++", build: "Release", tag: "llvm20-cuda12.0", gpu: "v100", sm: "70", driver: "latest", arch: "amd64" }
+          - { name: "clang 20",   cuda: "12.9", cxx: "clang++", build: "Release", tag: "llvm20-cuda12.9", gpu: "v100", sm: "70", driver: "latest", arch: "amd64" }
           - { name: "nvc++ 25.7", cuda: "12.9", cxx: "mpic++",  build: "Release", tag: "nvhpc25.7",       gpu: "v100", sm: "70", driver: "latest", arch: "amd64" }
           - { name: "nvc++ 25.7", cuda: "12.9", cxx: "mpic++",  build: "Debug",   tag: "nvhpc25.7",       gpu: "v100", sm: "70", driver: "latest", arch: "amd64" }
     runs-on: linux-${{ matrix.arch }}-gpu-${{ matrix.gpu }}-${{ matrix.driver }}-1