perf: Vectorize get_chunk_slice for faster sharded writes - #3713

Merged

d-v-b merged 26 commits into

zarr-developers:mainfrom

mkitti:mkitti-get-chunk-slice-vectorization

Feb 20, 2026

Commits on Feb 13, 2026

perf: Skip bounds check for initial elements in 2^n hypercube
mkitti
committed
47730f3
lint:Use a list comprehension rather than a for loop
mkitti
committed
865df2a
pref:Add decode_morton_vectorized
mkitti
committed
ce0099c
perf:Replace math.log2() with bit_length()
mkitti
committed
1b1076f
perf:Use magic numbers for 2D and 3D
mkitti
committed
47a68eb
perf:Add 4D Morton magic numbers
mkitti
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6fb6d00
perf:Add Morton magic numbers for 5D
mkitti
committed
db31842
perf:Remove singleton dimensions to reduce ndims
mkitti
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f9952f1
Add changes
mkitti
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aedce5a
fix:Address type annotation and linting issues
mkitti
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ef18210
perf:Remove magic number functions
mkitti
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24dcbd5
test:Add power of 2 sharding indexing tests
mkitti
committed
7b3db07
test: Add Morton order benchmarks with cache clearing

mkitti
and
claude
committed
443b5d4
fix:Bound LRU cache of _morton_order to 16
mkitti
committed
1cdcbdf
Merge branch 'main' into mkitti-morton-decode-optimization
d-v-b
authored
536f520
Merge branch 'main' into mkitti-morton-decode-optimization
d-v-b
authored
65205b3

Commits on Feb 16, 2026

test:Add a single chunk test for a large shard
mkitti
committed
c872e2b
test:Add indexing benchmarks for writing
mkitti
committed
1cad983
tests:Add single chunk write test for sharding
mkitti
committed
a666211

Commits on Feb 17, 2026

perf: Vectorize get_chunk_slice for faster sharded writes

mkitti
and
claude
committed
6129cd3

Commits on Feb 18, 2026

Merge branch 'main' into mkitti-get-chunk-slice-vectorization
d-v-b
authored
157d283

Commits on Feb 19, 2026

refactor: Return ndarray from _morton_order, simplify to_dict_vectorized

mkitti
and
claude
committed
3482ec8

Commits on Feb 20, 2026