cloud-array is an open-source Python library for storing and streaming large Numpy Arrays on local file systems and major cloud providers CDNs. It automatically chunks a large array of data into arbitrary chunks sizes and uploads them into the targeted direcotry.
import numpy as np
from cloud_array import CloudArray
shape = (10000, 100, 100)
chunk_shape = (10, 10, 10)
f = np.memmap(
'memmapped.dat',
dtype=np.float32,
mode='w+',
shape=shape
)
array = CloudArray(
chunk_shape=chunk_shape,
array=f,
url="s3://example_bucket/dataset0"
)
array.save()
print(array[:100,:100,:100])