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Fix potential memory leak for cache ram (#13525)

pull/12209/head
Long Tran 2025-03-14 08:28:50 -04:00 committed by GitHub
parent 5cdad8922c
commit 8cc449636d
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1 changed files with 11 additions and 10 deletions
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21
utils/dataloaders.py
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@ -688,16 +688,17 @@ class LoadImagesAndLabels(Dataset):
b, gb = 0, 1 << 30 # bytes of cached images, bytes per gigabytes
self.im_hw0, self.im_hw = [None] * n, [None] * n
fcn = self.cache_images_to_disk if cache_images == "disk" else self.load_image
results = ThreadPool(NUM_THREADS).imap(lambda i: (i, fcn(i)), self.indices)
pbar = tqdm(results, total=len(self.indices), bar_format=TQDM_BAR_FORMAT, disable=LOCAL_RANK > 0)
for i, x in pbar:
if cache_images == "disk":
b += self.npy_files[i].stat().st_size
else: # 'ram'
self.ims[i], self.im_hw0[i], self.im_hw[i] = x # im, hw_orig, hw_resized = load_image(self, i)
b += self.ims[i].nbytes * WORLD_SIZE
pbar.desc = f"{prefix}Caching images ({b / gb:.1f}GB {cache_images})"
pbar.close()
with ThreadPool(NUM_THREADS) as pool:
results = pool.imap(lambda i: (i, fcn(i)), self.indices)
pbar = tqdm(results, total=len(self.indices), bar_format=TQDM_BAR_FORMAT, disable=LOCAL_RANK > 0)
for i, x in pbar:
if cache_images == "disk":
b += self.npy_files[i].stat().st_size
else: # 'ram'
self.ims[i], self.im_hw0[i], self.im_hw[i] = x # im, hw_orig, hw_resized = load_image(self, i)
b += self.ims[i].nbytes * WORLD_SIZE
pbar.desc = f"{prefix}Caching images ({b / gb:.1f}GB {cache_images})"
pbar.close()
def check_cache_ram(self, safety_margin=0.1, prefix=""):
"""Checks if available RAM is sufficient for caching images, adjusting for a safety margin."""