diff --git a/.github/workflows/gh-build-and-test.yml b/.github/workflows/ci-build.yml
similarity index 62%
rename from .github/workflows/gh-build-and-test.yml
rename to .github/workflows/ci-build.yml
index 5b031a24..02cdb8a8 100644
--- a/.github/workflows/gh-build-and-test.yml
+++ b/.github/workflows/ci-build.yml
@@ -13,7 +13,7 @@ on:
 
 jobs:
   build:
-    name: Build (${{ inputs.host-platform }}, Python "${{ inputs.python-version }}")
+    name: Build (${{ inputs.host-platform }}, Python ${{ inputs.python-version }})
     if: ${{ github.repository_owner == 'nvidia' }}
     permissions:
       id-token: write # This is required for configure-aws-credentials
@@ -163,108 +163,3 @@ jobs:
           echo "CUDA_CORE_ARTIFACTS_DIR=${CUDA_CORE_ARTIFACTS_DIR}" >> $GITHUB_OUTPUT
           echo "CUDA_BINDINGS_ARTIFACT_NAME=${CUDA_BINDINGS_ARTIFACT_NAME}" >> $GITHUB_OUTPUT
           echo "CUDA_BINDINGS_ARTIFACTS_DIR=${CUDA_BINDINGS_ARTIFACTS_DIR}" >> $GITHUB_OUTPUT
-
-  test:
-    # TODO: improve the name once a separate test matrix is defined
-    name: Test (CUDA ${{ inputs.cuda-version }})
-    # TODO: enable testing once win-64 GPU runners are up
-    if: ${{ (github.repository_owner == 'nvidia') &&
-             startsWith(inputs.host-platform, 'linux') }}
-    permissions:
-      id-token: write # This is required for configure-aws-credentials
-      contents: read  # This is required for actions/checkout
-    runs-on: ${{ (inputs.host-platform == 'linux-x64' && 'linux-amd64-gpu-v100-latest-1') ||
-                 (inputs.host-platform == 'linux-aarch64' && 'linux-arm64-gpu-a100-latest-1') }}
-    # Our self-hosted runners require a container
-    # TODO: use a different (nvidia?) container
-    container:
-      options: -u root --security-opt seccomp=unconfined --shm-size 16g
-      image: ubuntu:22.04
-      env:
-        NVIDIA_VISIBLE_DEVICES: ${{ env.NVIDIA_VISIBLE_DEVICES }}
-    needs:
-      - build
-    steps:
-      - name: Run nvidia-smi to make sure GPU is working
-        shell: bash --noprofile --norc -xeuo pipefail {0}
-        run: nvidia-smi
-
-      - name: Checkout ${{ github.event.repository.name }}
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-
-      - name: Set up test environment
-        shell: bash --noprofile --norc -xeuo pipefail {0}
-        run: |
-          # make outputs from the previous job as env vars
-          echo "CUDA_CORE_ARTIFACT_NAME=${{ needs.build.outputs.CUDA_CORE_ARTIFACT_NAME }}" >> $GITHUB_ENV
-          echo "CUDA_CORE_ARTIFACTS_DIR=${{ needs.build.outputs.CUDA_CORE_ARTIFACTS_DIR }}" >> $GITHUB_ENV
-          echo "CUDA_BINDINGS_ARTIFACT_NAME=${{ needs.build.outputs.CUDA_BINDINGS_ARTIFACT_NAME }}" >> $GITHUB_ENV
-          echo "CUDA_BINDINGS_ARTIFACTS_DIR=${{ needs.build.outputs.CUDA_BINDINGS_ARTIFACTS_DIR }}" >> $GITHUB_ENV
-
-      - name: Download bindings build artifacts
-        uses: actions/download-artifact@v4
-        with:
-          name: ${{ env.CUDA_BINDINGS_ARTIFACT_NAME }}
-          path: ${{ env.CUDA_BINDINGS_ARTIFACTS_DIR }}
-
-      - name: Display structure of downloaded bindings artifacts
-        shell: bash --noprofile --norc -xeuo pipefail {0}
-        run: |
-          pwd
-          ls -lahR $CUDA_BINDINGS_ARTIFACTS_DIR
-
-      - name: Download core build artifacts
-        uses: actions/download-artifact@v4
-        with:
-          name: ${{ env.CUDA_CORE_ARTIFACT_NAME }}
-          path: ${{ env.CUDA_CORE_ARTIFACTS_DIR }}
-
-      - name: Display structure of downloaded core build artifacts
-        shell: bash --noprofile --norc -xeuo pipefail {0}
-        run: |
-          pwd
-          ls -lahR $CUDA_CORE_ARTIFACTS_DIR
-
-      - name: Set up Python ${{ inputs.python-version }}
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{ inputs.python-version }}
-
-      # The cache action needs this
-      - name: Install zstd
-        shell: bash --noprofile --norc -xeuo pipefail {0}
-        run: |
-          apt update
-          apt install zstd
-
-      - name: Set up mini CTK
-        uses: ./.github/actions/fetch_ctk
-        continue-on-error: false
-        with:
-          host-platform: ${{ inputs.host-platform }}
-          cuda-version: ${{ inputs.cuda-version }}
-          fail-on-ctk-cache-miss: true
-
-      - name: Run test / analysis
-        shell: bash --noprofile --norc -xeuo pipefail {0}
-        run: |
-          ls $CUDA_PATH
-
-          REPO_DIR=$(pwd)
-
-          cd "${CUDA_BINDINGS_ARTIFACTS_DIR}"
-          pip install *.whl
-
-          cd "${CUDA_CORE_ARTIFACTS_DIR}"
-          pip install *.whl
-
-          cd "${REPO_DIR}/cuda_bindings"
-          pip install -r requirements.txt
-          pytest -rxXs tests/
-          # TODO: enable cython tests
-          #pytest tests/cython
-
-          cd "${REPO_DIR}/cuda_core"
-          pytest -rxXs tests/
diff --git a/.github/workflows/ci-gh.yml b/.github/workflows/ci-gh.yml
index b4646f0e..f861713f 100644
--- a/.github/workflows/ci-gh.yml
+++ b/.github/workflows/ci-gh.yml
@@ -11,7 +11,7 @@ on:
       - "main"
 
 jobs:
-  ci:
+  build:
     strategy:
       fail-fast: false
       matrix:
@@ -30,9 +30,40 @@ jobs:
           # Note: this is for build-time only; the test-time matrix needs to be
           # defined separately.
           - "12.6.2"
-    name: "CI"
+    name: "CI-BUILD"
     uses:
-      ./.github/workflows/gh-build-and-test.yml
+      ./.github/workflows/ci-build.yml
+    with:
+      host-platform: ${{ matrix.host-platform }}
+      python-version: ${{ matrix.python-version }}
+      cuda-version: ${{ matrix.cuda-version }}
+    secrets: inherit
+
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        # TODO: align host-platform names with conda convention
+        host-platform:
+          - linux-x64
+          - linux-aarch64
+          - win-x64
+        python-version:
+          - "3.13"
+          - "3.12"
+          - "3.11"
+          - "3.10"
+          - "3.9"
+        cuda-version:
+          # Note: this is for test-time only.
+          - "12.6.2"
+          - "12.0.1"
+          - "11.8.0"
+    name: "CI-TEST"
+    needs:
+      - build
+    uses:
+      ./.github/workflows/ci-test.yml
     with:
       host-platform: ${{ matrix.host-platform }}
       python-version: ${{ matrix.python-version }}
diff --git a/.github/workflows/ci-test.yml b/.github/workflows/ci-test.yml
new file mode 100644
index 00000000..064f7535
--- /dev/null
+++ b/.github/workflows/ci-test.yml
@@ -0,0 +1,116 @@
+on:
+  workflow_call:
+    inputs:
+      host-platform:
+        type: string
+        required: true
+      python-version:
+        type: string
+        required: true
+      cuda-version:
+        type: string
+        required: true
+
+jobs:
+  test:
+    # TODO: improve the name once a separate test matrix is defined
+    name: Test (${{ inputs.host-platform }}, CUDA ${{ inputs.cuda-version }}, Python ${{ inputs.python-version }})
+    # TODO: enable testing once win-64 GPU runners are up
+    if: ${{ (github.repository_owner == 'nvidia') &&
+             startsWith(inputs.host-platform, 'linux') }}
+    permissions:
+      id-token: write # This is required for configure-aws-credentials
+      contents: read  # This is required for actions/checkout
+    runs-on: ${{ (inputs.host-platform == 'linux-x64' && 'linux-amd64-gpu-v100-latest-1') ||
+                 (inputs.host-platform == 'linux-aarch64' && 'linux-arm64-gpu-a100-latest-1') }}
+    # Our self-hosted runners require a container
+    # TODO: use a different (nvidia?) container
+    container:
+      options: -u root --security-opt seccomp=unconfined --shm-size 16g
+      image: ubuntu:22.04
+      env:
+        NVIDIA_VISIBLE_DEVICES: ${{ env.NVIDIA_VISIBLE_DEVICES }}
+    steps:
+      - name: Run nvidia-smi to make sure GPU is working
+        shell: bash --noprofile --norc -xeuo pipefail {0}
+        run: nvidia-smi
+
+      - name: Checkout ${{ github.event.repository.name }}
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up test environment
+        shell: bash --noprofile --norc -xeuo pipefail {0}
+        run: |
+          # make outputs from the previous job as env vars
+          echo "CUDA_CORE_ARTIFACT_NAME=${{ needs.build.outputs.CUDA_CORE_ARTIFACT_NAME }}" >> $GITHUB_ENV
+          echo "CUDA_CORE_ARTIFACTS_DIR=${{ needs.build.outputs.CUDA_CORE_ARTIFACTS_DIR }}" >> $GITHUB_ENV
+          echo "CUDA_BINDINGS_ARTIFACT_NAME=${{ needs.build.outputs.CUDA_BINDINGS_ARTIFACT_NAME }}" >> $GITHUB_ENV
+          echo "CUDA_BINDINGS_ARTIFACTS_DIR=${{ needs.build.outputs.CUDA_BINDINGS_ARTIFACTS_DIR }}" >> $GITHUB_ENV
+
+      - name: Download bindings build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: ${{ env.CUDA_BINDINGS_ARTIFACT_NAME }}
+          path: ${{ env.CUDA_BINDINGS_ARTIFACTS_DIR }}
+
+      - name: Display structure of downloaded bindings artifacts
+        shell: bash --noprofile --norc -xeuo pipefail {0}
+        run: |
+          pwd
+          ls -lahR $CUDA_BINDINGS_ARTIFACTS_DIR
+
+      - name: Download core build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: ${{ env.CUDA_CORE_ARTIFACT_NAME }}
+          path: ${{ env.CUDA_CORE_ARTIFACTS_DIR }}
+
+      - name: Display structure of downloaded core build artifacts
+        shell: bash --noprofile --norc -xeuo pipefail {0}
+        run: |
+          pwd
+          ls -lahR $CUDA_CORE_ARTIFACTS_DIR
+
+      - name: Set up Python ${{ inputs.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ inputs.python-version }}
+
+      # The cache action needs this
+      - name: Install zstd
+        shell: bash --noprofile --norc -xeuo pipefail {0}
+        run: |
+          apt update
+          apt install zstd
+
+      - name: Set up mini CTK
+        uses: ./.github/actions/fetch_ctk
+        continue-on-error: false
+        with:
+          host-platform: ${{ inputs.host-platform }}
+          cuda-version: ${{ inputs.cuda-version }}
+          fail-on-ctk-cache-miss: true
+
+      - name: Run test / analysis
+        shell: bash --noprofile --norc -xeuo pipefail {0}
+        run: |
+          ls $CUDA_PATH
+
+          REPO_DIR=$(pwd)
+
+          cd "${CUDA_BINDINGS_ARTIFACTS_DIR}"
+          pip install *.whl
+
+          cd "${CUDA_CORE_ARTIFACTS_DIR}"
+          pip install *.whl
+
+          cd "${REPO_DIR}/cuda_bindings"
+          pip install -r requirements.txt
+          pytest -rxXs tests/
+          # TODO: enable cython tests
+          #pytest tests/cython
+
+          cd "${REPO_DIR}/cuda_core"
+          pytest -rxXs tests/