diff --git a/.github/workflows/ci-main.yml b/.github/workflows/ci-main.yml
new file mode 100644
index 0000000..d9885ae
--- /dev/null
+++ b/.github/workflows/ci-main.yml
@@ -0,0 +1,75 @@
+name: ci
+
+on:
+  schedule:
+    - cron: "0 */4 * * *"
+
+jobs:
+  setup:
+    runs-on: ubuntu-latest
+    if: github.repository == 'simulationcraft/simc-profile' && github.ref_name == github.event.repository.default_branch
+
+    outputs:
+      cache-key: simc-clang++-18-cpp17-${{ env.SHA }}
+      cache-hit: ${{ steps.restore_cache.outputs.cache-hit }}
+
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          repository: simulationcraft/simc
+          path: simc-profile/simc/
+
+      - name: cache_key
+        shell: bash
+        run: |
+          cd simc-profile/simc/
+          echo "SHA=$(git rev-parse HEAD)" >> $GITHUB_ENV
+          cd ../..
+
+      - uses: actions/cache/restore@v5
+        id: restore_cache
+        continue-on-error: true
+        with:
+          path: simc-profile/simc/b/ninja/simc
+          key: simc-clang++-18-cpp17-${{ env.SHA }}
+          lookup-only: true
+
+  ci:
+    runs-on: ubuntu-latest
+    needs: setup
+    if: ${{ !fromJson( needs.setup.outputs.cache-hit ) }}
+
+    steps:
+      - uses: actions/checkout@v6
+        if: ${{
+
+      - name: validate_python_main
+        run: |
+          find ${{ runner.workspace }}/simc-profile/profiles -type f \
+          | xargs python ${{ runner.workspace }}/simc-profile/scripts/validate.py \
+          --validate
+
+      - name: validate_seasonal_python_main
+        run: |
+          find ${{ runner.workspace }}/simc-profile/profiles -type f \
+          | xargs python ${{ runner.workspace }}/simc-profile/scripts/validate.py \
+          --validate-seasonal
+
+      - uses: ./.github/workflows/build
+        id: build
+        with:
+          cache-key: ${{ fromJson( needs.setup.outputs.cache-key }}
+
+      - name: validate_simc_main
+        run: |
+          find ${{ runner.workspace }}/simc-profile/profiles -type f \
+          | xargs python ${{ runner.workspace }}/simc-profile/scripts/execute.py \
+          -b ${{ runner.workspace }}/simc-profile/simc-profile/simc/b/ninja/simc \
+          --save .
+
+      - name: execute_simc_main
+        run: |
+          find ${{ runner.workspace }}/simc-profile/profiles -type f \
+          | xargs python ${{ runner.workspace }}/simc-profile/scripts/execute.py \
+          -b ${{ runner.workspace }}/simc-profile/simc-profile/simc/b/ninja/simc \
+          --execute .
diff --git a/.github/workflows/ci-pullrequest.yml b/.github/workflows/ci-pullrequest.yml
new file mode 100644
index 0000000..b8eb4c8
--- /dev/null
+++ b/.github/workflows/ci-pullrequest.yml
@@ -0,0 +1,44 @@
+name: ci-pullrequest
+
+on:
+  pull_request
+
+jobs:
+  CI:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 2
+
+      - name: modified_files
+        run: |
+          files=$(git diff --diff-filter=AM --no-commit-id --name-only HEAD~1 -- '***.simc' | xargs)
+          echo "MODIFIED_FILES=$files" >> $GITHUB_ENV
+
+      - name: validate_python
+        run: |
+          python ${{ runner.workspace }}/simc-profile/scripts/validate.py \
+          ${{ env.MODIFIED_FILES }} --validate
+
+      - name: validate_seasonal_python_pr
+        if: github.event_name == 'pull_request'
+        run: |
+          python ${{ runner.workspace }}/simc-profile/scripts/validate.py \
+          ${{ env.MODIFIED_FILES }} --validate-seasonal
+
+      - uses: ./.github/workflows/setup_simc
+        id: setup
+
+      - name: validate_simc_pr
+        run: |
+          python ${{ runner.workspace }}/simc-profile/scripts/execute.py \
+          ${{ env.MODIFIED_FILES }} -b ${{ runner.workspace }}/simc-profile/simc-profile/simc/b/ninja/simc \
+          --save .
+
+      - name: execute_simc_pr
+        run: |
+          python ${{ runner.workspace }}/simc-profile/scripts/execute.py \
+          ${{ env.MODIFIED_FILES }} -b ${{ runner.workspace }}/simc-profile/simc-profile/simc/b/ninja/simc \
+          --execute .
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
deleted file mode 100644
index 3539e5c..0000000
--- a/.github/workflows/main.yml
+++ /dev/null
@@ -1,74 +0,0 @@
-name: CI
-
-on: [pull_request, push]
-
-jobs:
-  CI:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v6
-        with:
-          fetch-depth: 2
-
-      - name: modified_files
-        run: |
-          files=$(git diff --diff-filter=AM --no-commit-id --name-only HEAD~1 -- '***.simc' | xargs)
-          echo "MODIFIED_FILES=$files" >> $GITHUB_ENV
-
-      - name: validate_python_pr
-        if: github.event_name == 'pull_request'
-        run: |
-          python ${{ runner.workspace }}/simc-profile/scripts/validate.py \
-          ${{ env.MODIFIED_FILES }} --validate
-
-      - name: validate_python_main
-        if: github.event_name == 'push' && github.repository == 'simulationcraft/simc-profile' && github.ref_name == github.event.repository.default_branch
-        run: |
-          find ${{ runner.workspace }}/simc-profile/profiles -type f \
-          | xargs python ${{ runner.workspace }}/simc-profile/scripts/validate.py --validate
-
-      - name: validate_seasonal_python_pr
-        if: github.event_name == 'pull_request'
-        run: |
-          python ${{ runner.workspace }}/simc-profile/scripts/validate.py \
-          ${{ env.MODIFIED_FILES }} --validate-seasonal
-
-      - name: validate_seasonal_python_main
-        if: github.event_name == 'push' && github.repository == 'simulationcraft/simc-profile' && github.ref_name == github.event.repository.default_branch
-        run: |
-          find ${{ runner.workspace }}/simc-profile/profiles -type f \
-          | xargs python ${{ runner.workspace }}/simc-profile/scripts/validate.py --validate-seasonal
-
-      - uses: ./.github/workflows/setup_simc
-        id: setup
-
-      - name: validate_simc_pr
-        if: github.event_name == 'pull_request'
-        run: |
-          python ${{ runner.workspace }}/simc-profile/scripts/execute.py \
-          ${{ env.MODIFIED_FILES }} -b ${{ runner.workspace }}/simc-profile/simc-profile/simc/b/ninja/simc \
-          --save .
-
-      - name: execute_simc_pr
-        if: github.event_name == 'pull_request'
-        run: |
-          python ${{ runner.workspace }}/simc-profile/scripts/execute.py \
-          ${{ env.MODIFIED_FILES }} -b ${{ runner.workspace }}/simc-profile/simc-profile/simc/b/ninja/simc \
-          --execute .
-
-      - name: validate_simc_main
-        if: github.event_name == 'push' && github.repository == 'simulationcraft/simc-profile' && github.ref_name == github.event.repository.default_branch
-        run: |
-          find ${{ runner.workspace }}/simc-profile/profiles -type f \
-          | xargs python ${{ runner.workspace }}/simc-profile/scripts/execute.py \
-          -b ${{ runner.workspace }}/simc-profile/simc-profile/simc/b/ninja/simc \
-          --save .
-
-      - name: execute_simc_main
-        if: github.event_name == 'push' && github.repository == 'simulationcraft/simc-profile' && github.ref_name == github.event.repository.default_branch
-        run: |
-          find ${{ runner.workspace }}/simc-profile/profiles -type f \
-          | xargs python ${{ runner.workspace }}/simc-profile/scripts/execute.py \
-          -b ${{ runner.workspace }}/simc-profile/simc-profile/simc/b/ninja/simc \
-          --execute .