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Added Dalcin et al 2018 reference to manipulations._axis2axisResplit #1695

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Oct 28, 2024
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Added Dalcin et al 2018 reference to manipulations._axis2axisResplit #1695

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7 changes: 6 additions & 1 deletion heat/core/manipulations.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3719,7 +3719,8 @@ def _axis2axisResplit(
comm: Communication,
) -> torch.Tensor:
"""
Resplits the input array along a new axis and performs data exchange using MPI_Alltoallw. Returns target_larray object with the data after the exchange.
Resplits the input array along a new axis and performs data exchange using MPI_Alltoallw, after [1].
Returns `target_larray` object with the data after the exchange.

Parameters
----------
Expand All @@ -3737,6 +3738,10 @@ def _axis2axisResplit(
The tiling object containing the subarray parameters for the target array.
comm : Communication
The communication object for MPI communication.

References
----------
[1] Dalcin, Mortensen, Keyes, "Fast parallel multidimensional FFT using advanced MPI", 2018.
"""
# Create subarray types for original local shapes split along the new axis
source_subarray_params = source_tiles.get_subarray_params(source_split, target_split)
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