`ultralytics 8.2.12` revert `os.sched_setaffinity()` to fix train slowdowns (#11859)

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

ultralytics/__init__.py

@@ -1,6 +1,6 @@
 # Ultralytics YOLO 🚀, AGPL-3.0 license
 
-__version__ = "8.2.11"
+__version__ = "8.2.12"
 
 from ultralytics.data.explorer.explorer import Explorer
 from ultralytics.models import RTDETR, SAM, YOLO, YOLOWorld

ultralytics/data/build.py

@@ -21,7 +21,7 @@ from ultralytics.data.loaders import (
     autocast_list,
 )
 from ultralytics.data.utils import IMG_FORMATS, PIN_MEMORY, VID_FORMATS
-from ultralytics.utils import LINUX, NUM_THREADS, RANK, colorstr
+from ultralytics.utils import LINUX, RANK, colorstr
 from ultralytics.utils.checks import check_file
 
 
@@ -79,8 +79,6 @@ def seed_worker(worker_id):  # noqa
     worker_seed = torch.initial_seed() % 2**32
     np.random.seed(worker_seed)
     random.seed(worker_seed)
-    if LINUX and hasattr(os, "sched_setaffinity"):  # unsupported on macOS and Windows
-        os.sched_setaffinity(0, range(NUM_THREADS))  # fix https://github.com/ultralytics/ultralytics/pull/11195
 
 
 def build_yolo_dataset(cfg, img_path, batch, data, mode="train", rect=False, stride=32, multi_modal=False):