common_blockdim(blockdims)

Currently only implements the simplest possible heuristic: the common block-dimension is the only one that does not span fully span a dimension. This is a conservative choice that allows us to avoid potentially very expensive rechunking.

Assumes that each element of the input block dimensions has all the same sum (i.e., that they correspond to dimensions of the same size).

Find the common block dimensions from the list of block dimensions

Examples

This example is valid syntax, but we were not able to check execution

>>> common_blockdim([(3,), (2, 1)])
(2, 1)

This example is valid syntax, but we were not able to check execution

>>> common_blockdim([(1, 2), (2, 1)])
(1, 1, 1)

This example is valid syntax, but we were not able to check execution

>>> common_blockdim([(2, 2), (3, 1)])  # doctest: +SKIP
Traceback (most recent call last):
    ...
ValueError: Chunks do not align

See :

Back References

The following pages refer to to this document either explicitly or contain code examples using this.

dask.array.core.unify_chunks dask.array.core.common_blockdim

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File: /dask/array/core.py#3525
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