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Copy from ndarray #817

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Merged
merged 3 commits into from
Apr 20, 2022
Merged

Copy from ndarray #817

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966f48b
Added blocking kernel to copy-and-cast np.ndarray -> usm_ndarray
oleksandr-pavlyk Apr 18, 2022
cd6e804
Deployed copy-and-cast kernel to copy from numpy to usm_ndarray
oleksandr-pavlyk Apr 18, 2022
69b8784
Ensure we copy actual file before symlinks
oleksandr-pavlyk Apr 19, 2022
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18 changes: 6 additions & 12 deletions dpctl/tensor/_copy_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -78,18 +78,12 @@ def _copy_from_numpy_into(dst, np_ary):
"Copies `np_ary` into `dst` of type :class:`dpctl.tensor.usm_ndarray"
if not isinstance(np_ary, np.ndarray):
raise TypeError("Expected numpy.ndarray, got {}".format(type(np_ary)))
src_ary = np.broadcast_to(np.asarray(np_ary, dtype=dst.dtype), dst.shape)
if src_ary.size and (dst.flags & 1) and src_ary.flags["C"]:
dpm.as_usm_memory(dst).copy_from_host(src_ary.reshape((-1,)).view("u1"))
return
if src_ary.size and (dst.flags & 2) and src_ary.flags["F"]:
dpm.as_usm_memory(dst).copy_from_host(src_ary.reshape((-1,)).view("u1"))
return
for i in range(dst.size):
mi = np.unravel_index(i, dst.shape)
host_buf = np.array(src_ary[mi], ndmin=1).view("u1")
usm_mem = dpm.as_usm_memory(dst[mi])
usm_mem.copy_from_host(host_buf)
if not isinstance(dst, dpt.usm_ndarray):
raise TypeError("Expected usm_ndarray, got {}".format(type(dst)))
src_ary = np.broadcast_to(np_ary, dst.shape)
ti._copy_numpy_ndarray_into_usm_ndarray(
src=src_ary, dst=dst, sycl_queue=dst.sycl_queue
)


def from_numpy(np_ary, device=None, usm_type="device", sycl_queue=None):
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