YOLOv5 CPU Export Benchmarks

export.py

@@ -52,6 +52,7 @@
 import warnings
 from pathlib import Path
 
+import pandas as pd
 import torch
 import torch.nn as nn
 from torch.utils.mobile_optimizer import optimize_for_mobile
@@ -72,6 +73,22 @@
 from utils.torch_utils import select_device
 
 
+def export_formats():
+    # YOLOv5 export formats
+    x = [['PyTorch', '-', '.pt'],
+         ['TorchScript', 'torchscript', '.torchscript'],
+         ['ONNX', 'onnx', '.onnx'],
+         ['OpenVINO', 'openvino', '_openvino_model'],
+         ['TensorRT', 'engine', '.engine'],
+         ['CoreML', 'coreml', '.mlmodel'],
+         ['TensorFlow SavedModel', 'saved_model', '_saved_model'],
+         ['TensorFlow GraphDef', 'pb', '.pb'],
+         ['TensorFlow Lite', 'tflite', '.tflite'],
+         ['TensorFlow Edge TPU', 'edgetpu', '_edgetpu.tflite'],
+         ['TensorFlow.js', 'tfjs', '_web_model']]
+    return pd.DataFrame(x, columns=['Format', 'Argument', 'Suffix'])
+
+
 def export_torchscript(model, im, file, optimize, prefix=colorstr('TorchScript:')):
     # YOLOv5 TorchScript model export
     try:

models/common.py

@@ -294,10 +294,7 @@ def __init__(self, weights='yolov5s.pt', device=None, dnn=False, data=None):
 
         super().__init__()
         w = str(weights[0] if isinstance(weights, list) else weights)
-        suffix = Path(w).suffix.lower()
-        suffixes = ['.pt', '.torchscript', '.onnx', '.engine', '.tflite', '.pb', '', '.mlmodel', '.xml']
-        check_suffix(w, suffixes)  # check weights have acceptable suffix
-        pt, jit, onnx, engine, tflite, pb, saved_model, coreml, xml = (suffix == x for x in suffixes)  # backends
+        pt, jit, onnx, xml, engine, coreml, saved_model, pb, tflite, edgetpu, tfjs = self.model_type(w)  # get backend
         stride, names = 64, [f'class{i}' for i in range(1000)]  # assign defaults
         w = attempt_download(w)  # download if not local
         if data:  # data.yaml path (optional)
@@ -332,6 +329,8 @@ def __init__(self, weights='yolov5s.pt', device=None, dnn=False, data=None):
             check_requirements(('openvino-dev',))  # requires openvino-dev: https://pypi.org/project/openvino-dev/
             import openvino.inference_engine as ie
             core = ie.IECore()
+            if not Path(w).is_file():  # if not *.xml
+                w = next(Path(w).glob('*.xml'))  # get *.xml file from *_openvino_model dir
             network = core.read_network(model=w, weights=Path(w).with_suffix('.bin'))  # *.xml, *.bin paths
             executable_network = core.load_network(network, device_name='CPU', num_requests=1)
         elif engine:  # TensorRT
@@ -459,6 +458,18 @@ def warmup(self, imgsz=(1, 3, 640, 640), half=False):
                 im = torch.zeros(*imgsz).to(self.device).type(torch.half if half else torch.float)  # input image
                 self.forward(im)  # warmup
 
+    @staticmethod
+    def model_type(p='path/to/model.pt'):
+        # Return model type from model path, i.e. path='path/to/model.onnx' -> type=onnx
+        from export import export_formats
+        suffixes = list(export_formats().Suffix) + ['.xml']  # export suffixes
+        check_suffix(p, suffixes)  # checks
+        p = Path(p).name  # eliminate trailing separators
+        pt, jit, onnx, xml, engine, coreml, saved_model, pb, tflite, edgetpu, tfjs, xml2 = (s in p for s in suffixes)
+        xml |= xml2  # *_openvino_model or *.xml
+        tflite &= not edgetpu  # *.tflite
+        return pt, jit, onnx, xml, engine, coreml, saved_model, pb, tflite, edgetpu, tfjs
+
 
 class AutoShape(nn.Module):
     # YOLOv5 input-robust model wrapper for passing cv2/np/PIL/torch inputs. Includes preprocessing, inference and NMS

utils/benchmarks.py

@@ -0,0 +1,92 @@
+# YOLOv5 🚀 by Ultralytics, GPL-3.0 license
+"""
+Run YOLOv5 benchmarks on all supported export formats
+
+Format                      | `export.py --include`         | Model
+---                         | ---                           | ---
+PyTorch                     | -                             | yolov5s.pt
+TorchScript                 | `torchscript`                 | yolov5s.torchscript
+ONNX                        | `onnx`                        | yolov5s.onnx
+OpenVINO                    | `openvino`                    | yolov5s_openvino_model/
+TensorRT                    | `engine`                      | yolov5s.engine
+CoreML                      | `coreml`                      | yolov5s.mlmodel
+TensorFlow SavedModel       | `saved_model`                 | yolov5s_saved_model/
+TensorFlow GraphDef         | `pb`                          | yolov5s.pb
+TensorFlow Lite             | `tflite`                      | yolov5s.tflite
+TensorFlow Edge TPU         | `edgetpu`                     | yolov5s_edgetpu.tflite
+TensorFlow.js               | `tfjs`                        | yolov5s_web_model/
+
+Requirements:
+    $ pip install -r requirements.txt coremltools onnx onnx-simplifier onnxruntime openvino-dev tensorflow-cpu  # CPU
+    $ pip install -r requirements.txt coremltools onnx onnx-simplifier onnxruntime-gpu openvino-dev tensorflow  # GPU
+
+Usage:
+    $ python utils/benchmarks.py --weights yolov5s.pt --img 640
+"""
+
+import argparse
+import sys
+import time
+from pathlib import Path
+
+import pandas as pd
+
+FILE = Path(__file__).resolve()
+ROOT = FILE.parents[1]  # YOLOv5 root directory
+if str(ROOT) not in sys.path:
+    sys.path.append(str(ROOT))  # add ROOT to PATH
+# ROOT = ROOT.relative_to(Path.cwd())  # relative
+
+import export
+import val
+from utils import notebook_init
+from utils.general import LOGGER, print_args
+
+
+def run(weights=ROOT / 'yolov5s.pt',  # weights path
+        imgsz=640,  # inference size (pixels)
+        batch_size=1,  # batch size
+        data=ROOT / 'data/coco128.yaml',  # dataset.yaml path
+        ):
+    y, t = [], time.time()
+    formats = export.export_formats()
+    for i, (name, f, suffix) in formats.iterrows():  # index, (name, file, suffix)
+        try:
+            w = weights if f == '-' else export.run(weights=weights, imgsz=[imgsz], include=[f], device='cpu')[-1]
+            assert suffix in str(w), 'export failed'
+            result = val.run(data, w, batch_size, imgsz=imgsz, plots=False, device='cpu', task='benchmark')
+            metrics = result[0]  # metrics (mp, mr, map50, map, *losses(box, obj, cls))
+            speeds = result[2]  # times (preprocess, inference, postprocess)
+            y.append([name, metrics[3], speeds[1]])  # mAP, t_inference
+        except Exception as e:
+            LOGGER.warning(f'WARNING: Benchmark failure for {name}: {e}')
+            y.append([name, None, None])  # mAP, t_inference
+
+    # Print results
+    LOGGER.info('\n')
+    parse_opt()
+    notebook_init()  # print system info
+    py = pd.DataFrame(y, columns=['Format', 'mAP@0.5:0.95', 'Inference time (ms)'])
+    LOGGER.info(f'\nBenchmarks complete ({time.time() - t:.2f}s)')
+    LOGGER.info(str(py))
+    return py
+
+
+def parse_opt():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--weights', type=str, default=ROOT / 'yolov5s.pt', help='weights path')
+    parser.add_argument('--imgsz', '--img', '--img-size', type=int, default=640, help='inference size (pixels)')
+    parser.add_argument('--batch-size', type=int, default=1, help='batch size')
+    parser.add_argument('--data', type=str, default=ROOT / 'data/coco128.yaml', help='dataset.yaml path')
+    opt = parser.parse_args()
+    print_args(FILE.stem, opt)
+    return opt
+
+
+def main(opt):
+    run(**vars(opt))
+
+
+if __name__ == "__main__":
+    opt = parse_opt()
+    main(opt)

val.py

@@ -163,9 +163,10 @@ def run(data,
     # Dataloader
     if not training:
         model.warmup(imgsz=(1 if pt else batch_size, 3, imgsz, imgsz), half=half)  # warmup
-        pad = 0.0 if task == 'speed' else 0.5
+        pad = 0.0 if task in ('speed', 'benchmark') else 0.5
+        rect = False if task == 'benchmark' else pt  # square inference for benchmarks
         task = task if task in ('train', 'val', 'test') else 'val'  # path to train/val/test images
-        dataloader = create_dataloader(data[task], imgsz, batch_size, stride, single_cls, pad=pad, rect=pt,
+        dataloader = create_dataloader(data[task], imgsz, batch_size, stride, single_cls, pad=pad, rect=rect,
                                        workers=workers, prefix=colorstr(f'{task}: '))[0]
 
     seen = 0