Added perf script

Author: cehongwang

tools/perf/graph_break_overhead/graph_break.py

@@ -0,0 +1,150 @@
+import time
+
+import torch
+import torch.nn as nn
+import torch.nn.functional as F
+import torch_tensorrt as torchtrt
+import torchvision
+from pyinstrument import Profiler
+from torch_tensorrt.dynamo.utils import get_model_device
+
+torch.manual_seed(0)
+torch.cuda.manual_seed_all(0)
+import argparse
+
+
+def benchmark_model(model, input, label, profile=False):
+    if profile:
+        profiler = Profiler(interval=0.01)
+        profiler.start()
+    start_time = time.time()
+    for _ in range(1000):
+        model_outputs = model(*input)
+    end_time = time.time()
+    print(f"{label} 1000 runs: {end_time - start_time:.4f} seconds")
+    if profile:
+        profiler.stop()
+        profiler.write_html(
+            f"/home/other/{label.replace(' ', '_')}.html", timeline=False, show_all=True
+        )
+
+
+def main(args):
+    profile = args.profile
+    use_python_runtime = args.use_python_runtime
+    model_name = args.model
+
+    with torchtrt.dynamo.Debugger(log_level="debug", engine_builder_monitor=False):
+
+        model = (
+            torchvision.models.detection.ssd300_vgg16(pretrained=True).eval().to("cuda")
+        )
+        input = [torch.randn((1, 3, 224, 224)).to("cuda")]
+
+        BATCH = torch.export.Dim("BATCH", min=1, max=16)
+        exp_program = torch.export.export(model, tuple(input), strict=True)
+        trt_mod2 = trt_gm = torchtrt.dynamo.compile(
+            exp_program,
+            tuple(input),
+            use_python_runtime=use_python_runtime,
+            enabled_precisions={torch.float},
+            min_block_size=1,
+            immutable_weights=False,
+            reuse_cached_engines=False,
+        )
+
+        trt_mod1 = trt_gm = torchtrt.dynamo.compile(
+            exp_program,
+            tuple(input),
+            use_python_runtime=use_python_runtime,
+            enabled_precisions={torch.float},
+            min_block_size=1,
+            immutable_weights=False,
+            torch_executed_ops={torch.ops.aten.relu.default},
+            reuse_cached_engines=False,
+        )
+
+    # AOTI
+    if not use_python_runtime:
+        torchtrt.save(
+            trt_mod1,
+            "/home/other/aoti.pt2",
+            output_format="aot_inductor",
+            inputs=input,
+            retrace=True,
+        )
+        aoti_model_gb = torch._inductor.aoti_load_package("/home/other/aoti.pt2")
+        torchtrt.save(
+            trt_mod2,
+            "/home/other/aoti_no_gb.pt2",
+            output_format="aot_inductor",
+            inputs=input,
+            retrace=True,
+        )
+        aoti_model_no_gb = torch._inductor.aoti_load_package(
+            "/home/other/aoti_no_gb.pt2"
+        )
+
+    # Warmup runs to avoid measuring first-run overheads
+    for _ in range(100):
+        trt_mod2(*input)
+        model(*input)
+        if not use_python_runtime:
+            aoti_model_gb(*input)
+            aoti_model_no_gb(*input)
+
+    time.sleep(1)
+    benchmark_model(trt_mod1, input, "trt_mod1 (with graph break)", profile=profile)
+    benchmark_model(trt_mod2, input, "trt_mod2 (without graph break)", profile=profile)
+    if not use_python_runtime:
+        benchmark_model(aoti_model_gb, input, "aoti_model_gb", profile=profile)
+        benchmark_model(aoti_model_no_gb, input, "aoti_model_no_gb", profile=profile)
+
+    out1 = trt_mod1(*input)
+    out2 = trt_mod2(*input)
+    if not use_python_runtime:
+        out3 = aoti_model_gb(*input)
+        out4 = aoti_model_no_gb(*input)
+
+    def _to_tuple(x):
+        if isinstance(x, (tuple, list)):
+            return tuple(x)
+        return (x,)
+
+    outs1 = _to_tuple(out1)
+    outs2 = _to_tuple(out2)
+    if not use_python_runtime:
+        outs3 = _to_tuple(out3)
+        outs4 = _to_tuple(out4)
+
+    def compare_outputs(a, b, name1="A", name2="B"):
+        if len(a) != len(b):
+            print(f"Number of outputs differ: {len(a)} vs {len(b)}")
+            return False
+        all_equal = True
+        for i, (x, y) in enumerate(zip(a, b)):
+            if not torch.allclose(x, y, atol=1e-3, rtol=1e-3):
+                print(f"Output {i} differs between {name1} and {name2}")
+                print(f"max diff: {torch.max(torch.abs(x - y))}")
+                print(f"Mean diff: {torch.mean(torch.abs(x - y))}")
+                all_equal = False
+        if all_equal:
+            print(f"All outputs match between {name1} and {name2}")
+        return all_equal
+
+    compare_outputs(outs1, outs2, "trt_mod1", "trt_mod2")
+    if not use_python_runtime:
+        compare_outputs(outs1, outs3, "trt_mod1", "aoti_model_gb")
+        compare_outputs(outs1, outs4, "trt_mod1", "aoti_model_no_gb")
+        compare_outputs(outs2, outs3, "trt_mod2", "aoti_model")
+
+
+if __name__ == "__main__":
+    arg_parser = argparse.ArgumentParser()
+    arg_parser.add_argument("--profile", action="store_true")
+    arg_parser.add_argument("--use_python_runtime", action="store_true")
+    arg_parser.add_argument(
+        "--model", type=str, default="resnet18", choices=["resnet18", "resnet152"]
+    )
+    args = arg_parser.parse_args()
+    main(args)