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Add a fast path to copy to numpy.ndarray #2120

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Jul 9, 2025
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Add a fast path to copy to numpy.ndarray #2120

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3 changes: 3 additions & 0 deletions dpctl/tensor/_copy_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,9 @@
def _copy_to_numpy(ary):
if not isinstance(ary, dpt.usm_ndarray):
raise TypeError(f"Expected dpctl.tensor.usm_ndarray, got {type(ary)}")
if ary.size == 0:
# no data needs to be copied for zero sized array
return np.ndarray(ary.shape, dtype=ary.dtype)
nb = ary.usm_data.nbytes
q = ary.sycl_queue
hh = dpm.MemoryUSMHost(nb, queue=q)
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