Multi-threading support for the tracer

.github/workflows/end-to-end-test-tracer-replay_testbench.yaml

@@ -0,0 +1,41 @@
+name: end-to-end-test
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  tracer-replay-testbench:
+    runs-on: ubuntu-latest
+    env:
+      CODEFLASH_AIS_SERVER: prod
+      POSTHOG_API_KEY: ${{ secrets.POSTHOG_API_KEY }}
+      CODEFLASH_API_KEY: ${{ secrets.CODEFLASH_API_KEY }}
+      COLUMNS: 110
+      MAX_RETRIES: 3
+      RETRY_DELAY: 5
+      EXPECTED_IMPROVEMENT_PCT: 10
+      CODEFLASH_END_TO_END: 1
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set up Python 3.11 for CLI
+        uses: astral-sh/setup-uv@v5
+        with:
+          python-version: 3.11.6
+
+      - name: Install dependencies (CLI)
+        run: |
+          uv tool install poetry
+          uv venv
+          source .venv/bin/activate
+          poetry install --with dev
+
+      - name: Run Codeflash to optimize code
+        id: optimize_code
+        run: |
+          source .venv/bin/activate
+          poetry run python tests/scripts/end_to_end_test_tracer_replay_testbench.py

code_to_optimize/code_directories/simple_tracer_e2e/testbench.py

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+from concurrent.futures import ThreadPoolExecutor
+
+def funcA(number):
+    k = 0
+    for i in range(number * 100):
+        k += i
+    # Simplify the for loop by using sum with a range object
+    j = sum(range(number))
+
+    # Use a generator expression directly in join for more efficiency
+    return " ".join(str(i) for i in range(number))
+
+
+def test_threadpool() -> None:
+    pool = ThreadPoolExecutor(max_workers=3)
+    args = list(range(10, 31, 10))
+    result = pool.map(funcA, args)
+
+    for r in result:
+        print(r)
+
+
+if __name__ == "__main__":
+    test_threadpool()