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Update dataloaders.py #9250

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Sep 1, 2022
Merged

Update dataloaders.py #9250

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7 changes: 4 additions & 3 deletions utils/dataloaders.py
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,7 @@
VID_FORMATS = 'asf', 'avi', 'gif', 'm4v', 'mkv', 'mov', 'mp4', 'mpeg', 'mpg', 'ts', 'wmv' # include video suffixes
BAR_FORMAT = '{l_bar}{bar:10}{r_bar}{bar:-10b}' # tqdm bar format
LOCAL_RANK = int(os.getenv('LOCAL_RANK', -1)) # https://pytorch.org/docs/stable/elastic/run.html
PIN_MEMORY = str(os.getenv('PIN_MEMORY', True)).lower() == 'true' # global pin_memory for dataloaders

# Get orientation exif tag
for orientation in ExifTags.TAGS.keys():
Expand Down Expand Up @@ -83,7 +84,7 @@ def exif_transpose(image):
5: Image.TRANSPOSE,
6: Image.ROTATE_270,
7: Image.TRANSVERSE,
8: Image.ROTATE_90,}.get(orientation)
8: Image.ROTATE_90}.get(orientation)
if method is not None:
image = image.transpose(method)
del exif[0x0112]
Expand Down Expand Up @@ -144,7 +145,7 @@ def create_dataloader(path,
shuffle=shuffle and sampler is None,
num_workers=nw,
sampler=sampler,
pin_memory=True,
pin_memory=PIN_MEMORY,
collate_fn=LoadImagesAndLabels.collate_fn4 if quad else LoadImagesAndLabels.collate_fn,
worker_init_fn=seed_worker,
generator=generator), dataset
Expand Down Expand Up @@ -1152,6 +1153,6 @@ def create_classification_dataloader(path,
shuffle=shuffle and sampler is None,
num_workers=nw,
sampler=sampler,
pin_memory=True,
pin_memory=PIN_MEMORY,
worker_init_fn=seed_worker,
generator=generator) # or DataLoader(persistent_workers=True)