[IR] Test IR roundtrip with model zoo (#1489)

The test is created as a local script so it doesn't become a long
running CI test.


![image](https://github.com/microsoft/onnxscript/assets/11205048/49a46b84-c208-4853-bbfb-23faa10d06fa)

tools/ir/model_zoo_test/model_zoo_test.py

@@ -0,0 +1,127 @@
+"""Test IR roundtrip with ONNX model zoo.
+
+Usage:
+    python model_zoo_test.py --jobs 8
+"""
+
+from __future__ import annotations
+
+import argparse
+import contextlib
+import gc
+import multiprocessing.pool
+import sys
+import tempfile
+import time
+import traceback
+
+import onnx
+import tqdm
+from onnx import hub
+
+import onnxscript.testing
+from onnxscript import ir
+
+
+def test_model(model_info: hub.ModelInfo) -> float:
+    model_name = model_info.model
+    with tempfile.TemporaryDirectory() as temp_dir, contextlib.redirect_stdout(None):
+        # For parallel testing, this must be in a separate process because hub.set_dir
+        # is not thread-safe.
+        hub.set_dir(temp_dir)
+        model = hub.load(model_name)
+    assert model is not None
+    onnx.checker.check_model(model)
+    # Fix the missing graph name of some test models
+    model.graph.name = "main_graph"
+
+    # Profile the serialization and deserialization process
+    start = time.time()
+    ir_model = ir.serde.deserialize_model(model)
+    serialized = ir.serde.serialize_model(ir_model)
+    end = time.time()
+    onnxscript.testing.assert_onnx_proto_equal(serialized, model)
+    onnx.checker.check_model(serialized)
+    return end - start
+
+
+def run_one_test(model_info: hub.ModelInfo) -> tuple[str, str | None]:
+    start = time.time()
+    model_name = model_info.model
+    model_path = model_info.model_path
+    message = f"\n----Testing: {model_name} @ {model_path}----"
+    try:
+        time_passed = test_model(model_info)
+        message += green(f"\n[PASS]: {model_name} roundtrip test passed.")
+    except Exception as e:  # pylint: disable=broad-exception-caught
+        time_passed = -1
+        error = traceback.format_exc()
+        message += red(f"\n[FAIL]: {e}")
+    else:
+        error = None
+    end = time.time()
+    message += f"\n[Time]: {end - start} secs, roundtrip: {time_passed} secs"
+    print(message, flush=True)
+    # enable gc collection to prevent MemoryError by loading too many large models
+    gc.collect()
+    return model_name, error
+
+
+def green(text: str) -> str:
+    return f"\033[32m{text}\033[0m"
+
+
+def red(text: str) -> str:
+    return f"\033[31m{text}\033[0m"
+
+
+def main():
+    parser = argparse.ArgumentParser(description="Test IR roundtrip with ONNX model zoo.")
+    parser.add_argument(
+        "-k",
+        type=str,
+        default=None,
+        help="Keyword to filter the models. Default is None.",
+    )
+    parser.add_argument(
+        "--jobs",
+        type=int,
+        default=1,
+        help="Number of parallel jobs to run. Default is 1.",
+    )
+    args = parser.parse_args()
+
+    model_list = hub.list_models()
+    if args.k:
+        # Filter the models by name
+        name = args.k.lower()
+        model_list = [model for model in model_list if name in model.model.lower()]
+    print(f"=== Testing IR on {len(model_list)} models ===")
+
+    # run checker on each model
+    failed_models = []
+    failed_messages = []
+    # Use multi-processing to speed up the testing process
+    with multiprocessing.pool.Pool(args.jobs) as pool:
+        results = list(
+            tqdm.tqdm(
+                pool.imap_unordered(run_one_test, model_list),
+                "Testing...",
+                total=len(model_list),
+            )
+        )
+    for model_name, error in results:
+        if error is not None:
+            failed_models.append(model_name)
+            failed_messages.append((model_name, error))
+    if not failed_models:
+        print(green(f"{len(model_list)} models have been checked."))
+    else:
+        print(red(f"In all {len(model_list)} models, {len(failed_models)} models failed"))
+        for i, (model_name, error) in enumerate(failed_messages):
+            print(f"[{i} / {len(failed_models)}] {red(model_name)} failed because: {error}")
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()