Add a buildspec with trivial work

Signed-off-by: Jonathan Swartz <jonathan@jswartz.info>

Author: swahtz

.github/workflows/gpu.yml

@@ -11,7 +11,7 @@ jobs:
   # ---------------------------------------------------------------------------
 
   linux_gpu:
-    name: 'Linux CentOS 7 VFX CY2020 GPU <GCC 6.3.1>'
+    name: 'VDB GPU Tester'
     # Don't run on OCIO forks
     if: github.repository == 'AcademySoftwareFoundation/openvdb'
     # GH-hosted VM. The build runs in CentOS 7 'container' hard-coded in
@@ -29,9 +29,9 @@ jobs:
       - name: Validate AWS Credentials
         run: |
             aws sts get-caller-identity
-    #   - name: Run CodeBuild
-    #     uses: aws-actions/aws-codebuild-run-build@v1
-    #     with:
-    #       project-name: OpenColorIO
-    #       buildspec-override: buildspec.yml
-    #       image-override: aswf/ci-ocio:2025
+      - name: Run CodeBuild
+        uses: aws-actions/aws-codebuild-run-build@v1
+        with:
+          project-name: openvdb
+          buildspec-override: buildspec.yml
+          image-override: aswf/ci-openvdb:2025

buildspec.yml

@@ -0,0 +1,22 @@
+version: 0.2
+
+env:
+  variables:
+    CXX: g++
+    CC: gcc
+  exported-variables:
+    - CXX
+    - CC
+
+phases:
+  pre_build:
+    commands:
+      # Checkout
+      - git clone https://github.com/$GITHUB_REPOSITORY openvdb
+      - cd openvdb
+      - git checkout $GITHUB_SHA
+      # Print tree
+      - tree
+  nvidia-smi:
+    commands:
+      - nvidia-smi