diff --git a/README.md b/README.md
index 1d1b647..087d88c 100644
--- a/README.md
+++ b/README.md
@@ -62,7 +62,7 @@ full documentation on training, validation, prediction and deployment.
 
 Pip install the ultralytics package including
 all [requirements.txt](https://github.com/ultralytics/ultralytics/blob/main/requirements.txt) in a
-[**3.10>=Python>=3.7**](https://www.python.org/) environment, including
+[**Python>=3.7**](https://www.python.org/) environment with
 [**PyTorch>=1.7**](https://pytorch.org/get-started/locally/).
 
 ```bash
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 9931f78..b5f7aff 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -53,7 +53,7 @@
 <details open>
 <summary>安装</summary>
 
-Pip 安装包含所有 [requirements.txt](https://github.com/ultralytics/ultralytics/blob/main/requirements.txt) 的 ultralytics 包，环境要求 [**3.10>=Python>=3.7**](https://www.python.org/)，且 [**PyTorch>=1.7**](https://pytorch.org/get-started/locally/)。
+Pip 安装包含所有 [requirements.txt](https://github.com/ultralytics/ultralytics/blob/main/requirements.txt) 的 ultralytics 包，环境要求 [**Python>=3.7**](https://www.python.org/)，且 [**PyTorch>=1.7**](https://pytorch.org/get-started/locally/)。
 
 ```bash
 pip install ultralytics
diff --git a/requirements.txt b/requirements.txt
index 556c685..3e869ba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,6 +30,7 @@ seaborn>=0.11.0
 # nvidia-tensorrt  # TensorRT export
 # scikit-learn==0.19.2  # CoreML quantization
 # tensorflow>=2.4.1  # TF exports (-cpu, -aarch64, -macos)
+# tflite-support
 # tensorflowjs>=3.9.0  # TF.js export
 # openvino-dev>=2022.3  # OpenVINO export
 
diff --git a/tests/test_python.py b/tests/test_python.py
index a358e40..7070407 100644
--- a/tests/test_python.py
+++ b/tests/test_python.py
@@ -1,5 +1,6 @@
 # Ultralytics YOLO 🚀, GPL-3.0 license
 
+import platform
 from pathlib import Path
 
 import cv2
@@ -14,6 +15,7 @@ from ultralytics.yolo.utils import ROOT, SETTINGS
 MODEL = Path(SETTINGS['weights_dir']) / 'yolov8n.pt'
 CFG = 'yolov8n.yaml'
 SOURCE = ROOT / 'assets/bus.jpg'
+MACOS = platform.system() == 'Darwin'  # macOS environment
 
 
 def test_model_forward():
@@ -120,10 +122,11 @@ def test_export_openvino():
     YOLO(f)(SOURCE)  # exported model inference
 
 
-def test_export_coreml():
+def test_export_coreml():  # sourcery skip: move-assign
     model = YOLO(MODEL)
-    model.export(format='coreml')
-    # YOLO(f)(SOURCE)  # model prediction only supported on macOS
+    f = model.export(format='coreml')
+    if MACOS:
+        YOLO(f)(SOURCE)  # model prediction only supported on macOS
 
 
 def test_export_paddle(enabled=False):
diff --git a/ultralytics/nn/tasks.py b/ultralytics/nn/tasks.py
index f8079c8..f44c17d 100644
--- a/ultralytics/nn/tasks.py
+++ b/ultralytics/nn/tasks.py
@@ -12,7 +12,7 @@ import torch.nn as nn
 from ultralytics.nn.modules import (C1, C2, C3, C3TR, SPP, SPPF, Bottleneck, BottleneckCSP, C2f, C3Ghost, C3x, Classify,
                                     Concat, Conv, ConvTranspose, Detect, DWConv, DWConvTranspose2d, Ensemble, Focus,
                                     GhostBottleneck, GhostConv, Segment)
-from ultralytics.yolo.utils import DEFAULT_CFG_DICT, DEFAULT_CFG_KEYS, LOGGER, colorstr, yaml_load
+from ultralytics.yolo.utils import DEFAULT_CFG_DICT, DEFAULT_CFG_KEYS, LOGGER, RANK, colorstr, yaml_load
 from ultralytics.yolo.utils.checks import check_requirements, check_yaml
 from ultralytics.yolo.utils.torch_utils import (fuse_conv_and_bn, fuse_deconv_and_bn, initialize_weights,
                                                 intersect_dicts, make_divisible, model_info, scale_img, time_sync)
@@ -239,7 +239,7 @@ class DetectionModel(BaseModel):
         csd = weights.float().state_dict()  # checkpoint state_dict as FP32
         csd = intersect_dicts(csd, self.state_dict())  # intersect
         self.load_state_dict(csd, strict=False)  # load
-        if verbose:
+        if verbose and RANK == -1:
             LOGGER.info(f'Transferred {len(csd)}/{len(self.model.state_dict())} items from pretrained weights')
 
 
diff --git a/ultralytics/yolo/cfg/__init__.py b/ultralytics/yolo/cfg/__init__.py
index 29b5cf6..51158be 100644
--- a/ultralytics/yolo/cfg/__init__.py
+++ b/ultralytics/yolo/cfg/__init__.py
@@ -216,6 +216,9 @@ def entrypoint(debug=''):
 
     overrides = {}  # basic overrides, i.e. imgsz=320
     for a in merge_equals_args(args):  # merge spaces around '=' sign
+        if a.startswith('--'):
+            LOGGER.warning(f"WARNING ⚠️ '{a}' does not require leading dashes '--', updating to '{a[2:]}'.")
+            a = a[2:]
         if '=' in a:
             try:
                 re.sub(r' *= *', '=', a)  # remove spaces around equals sign
@@ -263,7 +266,7 @@ def entrypoint(debug=''):
         mode = DEFAULT_CFG.mode or 'predict'
         LOGGER.warning(f"WARNING ⚠️ 'mode' is missing. Valid modes are {modes}. Using default 'mode={mode}'.")
     elif mode not in modes:
-        if mode != 'checks':
+        if mode not in ('checks', checks):
             raise ValueError(f"Invalid 'mode={mode}'. Valid modes are {modes}.\n{CLI_HELP_MSG}")
         LOGGER.warning("WARNING ⚠️ 'yolo mode=checks' is deprecated. Use 'yolo checks' instead.")
         checks.check_yolo()
diff --git a/ultralytics/yolo/engine/exporter.py b/ultralytics/yolo/engine/exporter.py
index a7d114d..1692be8 100644
--- a/ultralytics/yolo/engine/exporter.py
+++ b/ultralytics/yolo/engine/exporter.py
@@ -206,7 +206,7 @@ class Exporter:
         self.output_shape = tuple(y.shape) if isinstance(y, torch.Tensor) else tuple(tuple(x.shape) for x in y)
         self.pretty_name = self.file.stem.replace('yolo', 'YOLO')
         self.metadata = {
-            'description': f"Ultralytics {self.pretty_name} model trained on {self.model.args['data']}",
+            'description': f"Ultralytics {self.pretty_name} model trained on {self.args.data}",
             'author': 'Ultralytics',
             'license': 'GPL-3.0 https://ultralytics.com/license',
             'version': __version__,
@@ -257,11 +257,16 @@ class Exporter:
         f = [str(x) for x in f if x]  # filter out '' and None
         if any(f):
             f = str(Path(f[-1]))
-            LOGGER.info(f'\nExport complete ({time.time() - t:.1f}s)'
-                        f"\nResults saved to {colorstr('bold', file.parent.resolve())}"
-                        f"\nPredict:         yolo task={model.task} mode=predict model={f}"
-                        f"\nValidate:        yolo task={model.task} mode=val model={f}"
-                        f"\nVisualize:       https://netron.app")
+            square = self.imgsz[0] == self.imgsz[1]
+            s = f"WARNING ⚠️ non-PyTorch val requires square images, 'imgsz={self.imgsz}' will not work. Use " \
+                f"export 'imgsz={max(self.imgsz)}' if val is required." if not square else ''
+            imgsz = self.imgsz[0] if square else str(self.imgsz)[1:-1].replace(' ', '')
+            LOGGER.info(
+                f'\nExport complete ({time.time() - t:.1f}s)'
+                f"\nResults saved to {colorstr('bold', file.parent.resolve())}"
+                f"\nPredict:         yolo task={model.task} mode=predict model={f} imgsz={imgsz}"
+                f"\nValidate:        yolo task={model.task} mode=val model={f} imgsz={imgsz} data={self.args.data} {s}"
+                f"\nVisualize:       https://netron.app")
 
         self.run_callbacks("on_export_end")
         return f  # return list of exported files/dirs
@@ -497,7 +502,7 @@ class Exporter:
         except ImportError:
             check_requirements(f"tensorflow{'' if torch.cuda.is_available() else '-macos' if MACOS else '-cpu'}")
             import tensorflow as tf  # noqa
-        check_requirements(("onnx", "onnx2tf", "sng4onnx", "onnxsim", "onnx_graphsurgeon"),
+        check_requirements(("onnx", "onnx2tf", "sng4onnx", "onnxsim", "onnx_graphsurgeon", "tflite_support"),
                            cmds="--extra-index-url https://pypi.ngc.nvidia.com ")
 
         LOGGER.info(f'\n{prefix} starting export with tensorflow {tf.__version__}...')
@@ -680,24 +685,45 @@ class Exporter:
 
     def _add_tflite_metadata(self, file):
         # Add metadata to *.tflite models per https://www.tensorflow.org/lite/models/convert/metadata
-        check_requirements('tflite_support')
-
         from tflite_support import flatbuffers  # noqa
         from tflite_support import metadata as _metadata  # noqa
         from tflite_support import metadata_schema_py_generated as _metadata_fb  # noqa
 
+        # Creates model info.
+        model_meta = _metadata_fb.ModelMetadataT()
+        model_meta.name = self.metadata['description']
+        model_meta.version = self.metadata['version']
+        model_meta.author = self.metadata['author']
+        model_meta.license = self.metadata['license']
+
+        # Creates input info.
+        input_meta = _metadata_fb.TensorMetadataT()
+        input_meta.name = "image"
+        input_meta.description = "Input image to be detected."
+        input_meta.content = _metadata_fb.ContentT()
+        input_meta.content.contentProperties = _metadata_fb.ImagePropertiesT()
+        input_meta.content.contentProperties.colorSpace = _metadata_fb.ColorSpaceType.RGB
+        input_meta.content.contentPropertiesType = _metadata_fb.ContentProperties.ImageProperties
+
+        # Creates output info.
+        output_meta = _metadata_fb.TensorMetadataT()
+        output_meta.name = "output"
+        output_meta.description = "Coordinates of detected objects, class labels, and confidence score."
+
+        # Label file
         tmp_file = Path('/tmp/meta.txt')
         with open(tmp_file, 'w') as meta_f:
             meta_f.write(str(self.metadata))
 
-        model_meta = _metadata_fb.ModelMetadataT()
         label_file = _metadata_fb.AssociatedFileT()
         label_file.name = tmp_file.name
-        model_meta.associatedFiles = [label_file]
+        label_file.type = _metadata_fb.AssociatedFileType.TENSOR_AXIS_LABELS
+        output_meta.associatedFiles = [label_file]
 
+        # Creates subgraph info.
         subgraph = _metadata_fb.SubGraphMetadataT()
-        subgraph.inputTensorMetadata = [_metadata_fb.TensorMetadataT()]
-        subgraph.outputTensorMetadata = [_metadata_fb.TensorMetadataT()] * len(self.output_shape)
+        subgraph.inputTensorMetadata = [input_meta]
+        subgraph.outputTensorMetadata = [output_meta]
         model_meta.subgraphMetadata = [subgraph]
 
         b = flatbuffers.Builder(0)
@@ -710,6 +736,14 @@ class Exporter:
         populator.populate()
         tmp_file.unlink()
 
+    # TODO Rename this here and in `_add_tflite_metadata`
+    def _extracted_from__add_tflite_metadata_15(self, _metadata_fb, arg1, arg2):
+        # Creates input info.
+        result = _metadata_fb.TensorMetadataT()
+        result.name = arg1
+        result.description = arg2
+        return result
+
     def _pipeline_coreml(self, model, prefix=colorstr('CoreML Pipeline:')):
         # YOLOv8 CoreML pipeline
         import coremltools as ct  # noqa
diff --git a/ultralytics/yolo/engine/model.py b/ultralytics/yolo/engine/model.py
index e42eae4..729ab08 100644
--- a/ultralytics/yolo/engine/model.py
+++ b/ultralytics/yolo/engine/model.py
@@ -81,7 +81,7 @@ class YOLO:
         cfg_dict = yaml_load(self.cfg, append_filename=True)  # model dict
         self.task = guess_model_task(cfg_dict)
         self.ModelClass, self.TrainerClass, self.ValidatorClass, self.PredictorClass = self._assign_ops_from_task()
-        self.model = self.ModelClass(cfg_dict, verbose=verbose)  # initialize
+        self.model = self.ModelClass(cfg_dict, verbose=verbose and RANK == -1)  # initialize
 
     def _load(self, weights: str):
         """
@@ -240,7 +240,7 @@ class YOLO:
         if RANK in {0, -1}:
             self.model, _ = attempt_load_one_weight(str(self.trainer.best))
             self.overrides = self.model.args
-            self.metrics_data = self.trainer.validator.metrics
+            self.metrics_data = getattr(self.trainer.validator, 'metrics', None)  # TODO: no metrics returned by DDP
 
     def to(self, device):
         """
diff --git a/ultralytics/yolo/engine/trainer.py b/ultralytics/yolo/engine/trainer.py
index f472add..78a6b32 100644
--- a/ultralytics/yolo/engine/trainer.py
+++ b/ultralytics/yolo/engine/trainer.py
@@ -85,6 +85,7 @@ class BaseTrainer:
         self.console = LOGGER
         self.validator = None
         self.model = None
+        self.metrics = None
         init_seeds(self.args.seed + 1 + RANK, deterministic=self.args.deterministic)
 
         # Dirs
@@ -417,7 +418,7 @@ class BaseTrainer:
             cfg = ckpt["model"].yaml
         else:
             cfg = model
-        self.model = self.get_model(cfg=cfg, weights=weights)  # calls Model(cfg, weights)
+        self.model = self.get_model(cfg=cfg, weights=weights, verbose=RANK == -1)  # calls Model(cfg, weights)
         return ckpt
 
     def optimizer_step(self):
diff --git a/ultralytics/yolo/v8/classify/train.py b/ultralytics/yolo/v8/classify/train.py
index 2a149d1..8b14daa 100644
--- a/ultralytics/yolo/v8/classify/train.py
+++ b/ultralytics/yolo/v8/classify/train.py
@@ -7,7 +7,7 @@ from ultralytics.nn.tasks import ClassificationModel, attempt_load_one_weight
 from ultralytics.yolo import v8
 from ultralytics.yolo.data import build_classification_dataloader
 from ultralytics.yolo.engine.trainer import BaseTrainer
-from ultralytics.yolo.utils import DEFAULT_CFG
+from ultralytics.yolo.utils import DEFAULT_CFG, RANK
 from ultralytics.yolo.utils.torch_utils import is_parallel, strip_optimizer
 
 
@@ -23,7 +23,7 @@ class ClassificationTrainer(BaseTrainer):
         self.model.names = self.data["names"]
 
     def get_model(self, cfg=None, weights=None, verbose=True):
-        model = ClassificationModel(cfg, nc=self.data["nc"])
+        model = ClassificationModel(cfg, nc=self.data["nc"], verbose=verbose and RANK == -1)
         if weights:
             model.load(weights)
 
diff --git a/ultralytics/yolo/v8/detect/train.py b/ultralytics/yolo/v8/detect/train.py
index 3df4292..f22f08f 100644
--- a/ultralytics/yolo/v8/detect/train.py
+++ b/ultralytics/yolo/v8/detect/train.py
@@ -9,7 +9,7 @@ from ultralytics.yolo import v8
 from ultralytics.yolo.data import build_dataloader
 from ultralytics.yolo.data.dataloaders.v5loader import create_dataloader
 from ultralytics.yolo.engine.trainer import BaseTrainer
-from ultralytics.yolo.utils import DEFAULT_CFG, colorstr
+from ultralytics.yolo.utils import DEFAULT_CFG, RANK, colorstr
 from ultralytics.yolo.utils.loss import BboxLoss
 from ultralytics.yolo.utils.ops import xywh2xyxy
 from ultralytics.yolo.utils.plotting import plot_images, plot_results
@@ -57,7 +57,7 @@ class DetectionTrainer(BaseTrainer):
         # TODO: self.model.class_weights = labels_to_class_weights(dataset.labels, nc).to(device) * nc
 
     def get_model(self, cfg=None, weights=None, verbose=True):
-        model = DetectionModel(cfg, ch=3, nc=self.data["nc"], verbose=verbose)
+        model = DetectionModel(cfg, ch=3, nc=self.data["nc"], verbose=verbose and RANK == -1)
         if weights:
             model.load(weights)
 
diff --git a/ultralytics/yolo/v8/segment/train.py b/ultralytics/yolo/v8/segment/train.py
index 2d856b0..2c04b4e 100644
--- a/ultralytics/yolo/v8/segment/train.py
+++ b/ultralytics/yolo/v8/segment/train.py
@@ -6,7 +6,7 @@ import torch.nn.functional as F
 
 from ultralytics.nn.tasks import SegmentationModel
 from ultralytics.yolo import v8
-from ultralytics.yolo.utils import DEFAULT_CFG
+from ultralytics.yolo.utils import DEFAULT_CFG, RANK
 from ultralytics.yolo.utils.ops import crop_mask, xyxy2xywh
 from ultralytics.yolo.utils.plotting import plot_images, plot_results
 from ultralytics.yolo.utils.tal import make_anchors
@@ -24,7 +24,7 @@ class SegmentationTrainer(v8.detect.DetectionTrainer):
         super().__init__(cfg, overrides)
 
     def get_model(self, cfg=None, weights=None, verbose=True):
-        model = SegmentationModel(cfg, ch=3, nc=self.data["nc"], verbose=verbose)
+        model = SegmentationModel(cfg, ch=3, nc=self.data["nc"], verbose=verbose and RANK == -1)
         if weights:
             model.load(weights)