Read and write Zarr arrays to/from cuNumeric arrays.

Example

import cunumeric as num
import legate.core
import legate_kvikio.zarr

a = num.arange(10000).reshape(100, 100)

# Write array to a Zarr file by chunks of 10x10.
legate_kvikio.zarr.write_array(a, "/tmp/myfile.zarr", chunks=(10, 10))

# Block until done writing.
legate.core.get_legate_runtime().issue_execution_fence(block=True)

# Read array from a Zarr file.
b = legate_kvikio.zarr.read_array("/tmp/myfile.zarr")

# They should be equal
assert (a == b).all()

Limitations

• Groups not supported -- only access to individual Zarr arrays are implemented.
• Can only read and write whole arrays -- no partial access.
• No compression -- only Zarr arrays written with compressor=None is supported.
• Writing an array with shape that isn't divisible by the shape of the Zarr chunks on disk involves an array copy, which can be expensive both in terms of performance and memory usage.