Tests improvements (#4616)

Co-authored-by: Kayzwer <68285002+Kayzwer@users.noreply.github.com>

.github/workflows/ci.yaml

@@ -125,9 +125,9 @@ jobs:
           python --version
           pip --version
           pip list
-      - name: Benchmark DetectionModel
-        shell: bash
-        run: coverage run -a --source=ultralytics -m ultralytics.cfg.__init__ benchmark model='path with spaces/${{ matrix.model }}.pt' imgsz=160 verbose=0.26
+      #- name: Benchmark DetectionModel
+      #  shell: bash
+      #  run: coverage run -a --source=ultralytics -m ultralytics.cfg.__init__ benchmark model='path with spaces/${{ matrix.model }}.pt' imgsz=160 verbose=0.26
       - name: Benchmark SegmentationModel
         shell: bash
         run: coverage run -a --source=ultralytics -m ultralytics.cfg.__init__ benchmark model='path with spaces/${{ matrix.model }}-seg.pt' imgsz=160 verbose=0.30

tests/test_cuda.py

@@ -94,7 +94,7 @@ def test_model_ray_tune():
 
 @pytest.mark.skipif(not CUDA_IS_AVAILABLE, reason='CUDA is not available')
 def test_model_tune():
-    YOLO('yolov8n.pt').tune(data='coco8.yaml', imgsz=32, epochs=1, iterations=1, device='cpu')
+    YOLO('yolov8n.pt').tune(data='coco8.yaml', imgsz=32, epochs=1, iterations=2, plots=False, device='cpu')
 
 
 @pytest.mark.skipif(not CUDA_IS_AVAILABLE, reason='CUDA is not available')

ultralytics/engine/model.py

@@ -361,7 +361,7 @@ class Model:
             from .tuner import Tuner
 
             custom = {}  # method defaults
-            args = {**self.overrides, **custom, **kwargs, 'mode': 'export'}  # highest priority args on the right
+            args = {**self.overrides, **custom, **kwargs, 'mode': 'train'}  # highest priority args on the right
             return Tuner(args=args, _callbacks=self.callbacks)(model=self.model, iterations=iterations)
 
     def to(self, device):

ultralytics/engine/tuner.py

@@ -92,7 +92,7 @@ class Tuner:
         callbacks.add_integration_callbacks(self)
         LOGGER.info(f"Initialized Tuner instance with 'tune_dir={self.tune_dir}'.")
 
-    def _mutate(self, parent='single', n=5, mutation=0.8, sigma=0.6, return_best=False):
+    def _mutate(self, parent='single', n=5, mutation=0.8, sigma=0.2, return_best=False):
         """
         Mutates the hyperparameters based on bounds and scaling factors specified in `self.space`.
 

ultralytics/utils/loss.py

@@ -19,7 +19,8 @@ class VarifocalLoss(nn.Module):
         """Initialize the VarifocalLoss class."""
         super().__init__()
 
-    def forward(self, pred_score, gt_score, label, alpha=0.75, gamma=2.0):
+    @staticmethod
+    def forward(pred_score, gt_score, label, alpha=0.75, gamma=2.0):
         """Computes varfocal loss."""
         weight = alpha * pred_score.sigmoid().pow(gamma) * (1 - label) + gt_score * label
         with torch.cuda.amp.autocast(enabled=False):
@@ -28,14 +29,14 @@ class VarifocalLoss(nn.Module):
         return loss
 
 
-# Losses
 class FocalLoss(nn.Module):
     """Wraps focal loss around existing loss_fcn(), i.e. criteria = FocalLoss(nn.BCEWithLogitsLoss(), gamma=1.5)."""
 
     def __init__(self, ):
         super().__init__()
 
-    def forward(self, pred, label, gamma=1.5, alpha=0.25):
+    @staticmethod
+    def forward(pred, label, gamma=1.5, alpha=0.25):
         """Calculates and updates confusion matrix for object detection/classification tasks."""
         loss = F.binary_cross_entropy_with_logits(pred, label, reduction='none')
         # p_t = torch.exp(-loss)
@@ -89,6 +90,7 @@ class BboxLoss(nn.Module):
 
 
 class KeypointLoss(nn.Module):
+    """Criterion class for computing training losses."""
 
     def __init__(self, sigmas) -> None:
         super().__init__()
@@ -103,8 +105,8 @@ class KeypointLoss(nn.Module):
         return kpt_loss_factor * ((1 - torch.exp(-e)) * kpt_mask).mean()
 
 
-# Criterion class for computing Detection training losses
 class v8DetectionLoss:
+    """Criterion class for computing training losses."""
 
     def __init__(self, model):  # model must be de-paralleled
 
@@ -199,8 +201,8 @@ class v8DetectionLoss:
         return loss.sum() * batch_size, loss.detach()  # loss(box, cls, dfl)
 
 
-# Criterion class for computing training losses
 class v8SegmentationLoss(v8DetectionLoss):
+    """Criterion class for computing training losses."""
 
     def __init__(self, model):  # model must be de-paralleled
         super().__init__(model)
@@ -294,8 +296,8 @@ class v8SegmentationLoss(v8DetectionLoss):
         return (crop_mask(loss, xyxy).mean(dim=(1, 2)) / area).mean()
 
 
-# Criterion class for computing training losses
 class v8PoseLoss(v8DetectionLoss):
+    """Criterion class for computing training losses."""
 
     def __init__(self, model):  # model must be de-paralleled
         super().__init__(model)
@@ -374,7 +376,8 @@ class v8PoseLoss(v8DetectionLoss):
 
         return loss.sum() * batch_size, loss.detach()  # loss(box, cls, dfl)
 
-    def kpts_decode(self, anchor_points, pred_kpts):
+    @staticmethod
+    def kpts_decode(anchor_points, pred_kpts):
         """Decodes predicted keypoints to image coordinates."""
         y = pred_kpts.clone()
         y[..., :2] *= 2.0
@@ -384,6 +387,7 @@ class v8PoseLoss(v8DetectionLoss):
 
 
 class v8ClassificationLoss:
+    """Criterion class for computing training losses."""
 
     def __call__(self, preds, batch):
         """Compute the classification loss between predictions and true labels."""

ultralytics/utils/tal.py

@@ -122,8 +122,8 @@ class TaskAlignedAssigner(nn.Module):
 
         # Normalize
         align_metric *= mask_pos
-        pos_align_metrics = align_metric.amax(axis=-1, keepdim=True)  # b, max_num_obj
-        pos_overlaps = (overlaps * mask_pos).amax(axis=-1, keepdim=True)  # b, max_num_obj
+        pos_align_metrics = align_metric.amax(dim=-1, keepdim=True)  # b, max_num_obj
+        pos_overlaps = (overlaps * mask_pos).amax(dim=-1, keepdim=True)  # b, max_num_obj
         norm_align_metric = (align_metric * pos_overlaps / (pos_align_metrics + self.eps)).amax(-2).unsqueeze(-1)
         target_scores = target_scores * norm_align_metric