Accept NumPy arrays in advanced indexing

dpctl/tensor/_copy_utils.py

@@ -756,20 +756,28 @@ def _extract_impl(ary, ary_mask, axis=0):
         raise TypeError(
             f"Expecting type dpctl.tensor.usm_ndarray, got {type(ary)}"
         )
-    if not isinstance(ary_mask, dpt.usm_ndarray):
-        raise TypeError(
-            f"Expecting type dpctl.tensor.usm_ndarray, got {type(ary_mask)}"
+    if isinstance(ary_mask, dpt.usm_ndarray):
+        dst_usm_type = dpctl.utils.get_coerced_usm_type(
+            (ary.usm_type, ary_mask.usm_type)
         )
-    dst_usm_type = dpctl.utils.get_coerced_usm_type(
-        (ary.usm_type, ary_mask.usm_type)
-    )
-    exec_q = dpctl.utils.get_execution_queue(
-        (ary.sycl_queue, ary_mask.sycl_queue)
-    )
-    if exec_q is None:
-        raise dpctl.utils.ExecutionPlacementError(
-            "arrays have different associated queues. "
-            "Use `y.to_device(x.device)` to migrate."
+        exec_q = dpctl.utils.get_execution_queue(
+            (ary.sycl_queue, ary_mask.sycl_queue)
+        )
+        if exec_q is None:
+            raise dpctl.utils.ExecutionPlacementError(
+                "arrays have different associated queues. "
+                "Use `y.to_device(x.device)` to migrate."
+            )
+    elif isinstance(ary_mask, np.ndarray):
+        dst_usm_type = ary.usm_type
+        exec_q = ary.sycl_queue
+        ary_mask = dpt.asarray(
+            ary_mask, usm_type=dst_usm_type, sycl_queue=exec_q
+        )
+    else:
+        raise TypeError(
+            "Expecting type dpctl.tensor.usm_ndarray or numpy.ndarray, got "
+            f"{type(ary_mask)}"
         )
     ary_nd = ary.ndim
     pp = normalize_axis_index(operator.index(axis), ary_nd)
@@ -837,35 +845,40 @@ def _nonzero_impl(ary):
     return res
 
 
-def _validate_indices(inds, queue_list, usm_type_list):
+def _get_indices_queue_usm_type(inds, queue, usm_type):
     """
-    Utility for validating indices are usm_ndarray of integral dtype or Python
-    integers. At least one must be an array.
+    Utility for validating indices are NumPy ndarray or usm_ndarray of integral
+    dtype or Python integers. At least one must be an array.
 
     For each array, the queue and usm type are appended to `queue_list` and
     `usm_type_list`, respectively.
     """
-    any_usmarray = False
+    queues = [queue]
+    usm_types = [usm_type]
+    any_array = False
     for ind in inds:
-        if isinstance(ind, dpt.usm_ndarray):
-            any_usmarray = True
+        if isinstance(ind, (np.ndarray, dpt.usm_ndarray)):
+            any_array = True
             if ind.dtype.kind not in "ui":
                 raise IndexError(
                     "arrays used as indices must be of integer (or boolean) "
                     "type"
                 )
-            queue_list.append(ind.sycl_queue)
-            usm_type_list.append(ind.usm_type)
+            if isinstance(ind, dpt.usm_ndarray):
+                queues.append(ind.sycl_queue)
+                usm_types.append(ind.usm_type)
         elif not isinstance(ind, Integral):
             raise TypeError(
-                "all elements of `ind` expected to be usm_ndarrays "
-                f"or integers, found {type(ind)}"
+                "all elements of `ind` expected to be usm_ndarrays, "
+                f"NumPy arrays, or integers, found {type(ind)}"
             )
-    if not any_usmarray:
+    if not any_array:
         raise TypeError(
-            "at least one element of `inds` expected to be a usm_ndarray"
+            "at least one element of `inds` expected to be an array"
         )
-    return inds
+    usm_type = dpctl.utils.get_coerced_usm_type(usm_types)
+    q = dpctl.utils.get_execution_queue(queues)
+    return q, usm_type
 
 
 def _prepare_indices_arrays(inds, q, usm_type):
@@ -922,18 +935,12 @@ def _take_multi_index(ary, inds, p, mode=0):
         raise ValueError(
             "Invalid value for mode keyword, only 0 or 1 is supported"
         )
-    queues_ = [
-        ary.sycl_queue,
-    ]
-    usm_types_ = [
-        ary.usm_type,
-    ]
     if not isinstance(inds, (list, tuple)):
         inds = (inds,)
 
-    _validate_indices(inds, queues_, usm_types_)
-    res_usm_type = dpctl.utils.get_coerced_usm_type(usm_types_)
-    exec_q = dpctl.utils.get_execution_queue(queues_)
+    exec_q, res_usm_type = _get_indices_queue_usm_type(
+        inds, ary.sycl_queue, ary.usm_type
+    )
     if exec_q is None:
         raise dpctl.utils.ExecutionPlacementError(
             "Can not automatically determine where to allocate the "
@@ -942,8 +949,7 @@ def _take_multi_index(ary, inds, p, mode=0):
             "be associated with the same queue."
         )
 
-    if len(inds) > 1:
-        inds = _prepare_indices_arrays(inds, exec_q, res_usm_type)
+    inds = _prepare_indices_arrays(inds, exec_q, res_usm_type)
 
     ind0 = inds[0]
     ary_sh = ary.shape
@@ -976,16 +982,28 @@ def _place_impl(ary, ary_mask, vals, axis=0):
         raise TypeError(
             f"Expecting type dpctl.tensor.usm_ndarray, got {type(ary)}"
         )
-    if not isinstance(ary_mask, dpt.usm_ndarray):
-        raise TypeError(
-            f"Expecting type dpctl.tensor.usm_ndarray, got {type(ary_mask)}"
+    if isinstance(ary_mask, dpt.usm_ndarray):
+        exec_q = dpctl.utils.get_execution_queue(
+            (
+                ary.sycl_queue,
+                ary_mask.sycl_queue,
+            )
         )
-    exec_q = dpctl.utils.get_execution_queue(
-        (
-            ary.sycl_queue,
-            ary_mask.sycl_queue,
+        if exec_q is None:
+            raise dpctl.utils.ExecutionPlacementError(
+                "arrays have different associated queues. "
+                "Use `y.to_device(x.device)` to migrate."
+            )
+    elif isinstance(ary_mask, np.ndarray):
+        exec_q = ary.sycl_queue
+        ary_mask = dpt.asarray(
+            ary_mask, usm_type=ary.usm_type, sycl_queue=exec_q
+        )
+    else:
+        raise TypeError(
+            "Expecting type dpctl.tensor.usm_ndarray or numpy.ndarray, got "
+            f"{type(ary_mask)}"
         )
-    )
     if exec_q is not None:
         if not isinstance(vals, dpt.usm_ndarray):
             vals = dpt.asarray(vals, dtype=ary.dtype, sycl_queue=exec_q)
@@ -1048,23 +1066,13 @@ def _put_multi_index(ary, inds, p, vals, mode=0):
         raise ValueError(
             "Invalid value for mode keyword, only 0 or 1 is supported"
         )
-    if isinstance(vals, dpt.usm_ndarray):
-        queues_ = [ary.sycl_queue, vals.sycl_queue]
-        usm_types_ = [ary.usm_type, vals.usm_type]
-    else:
-        queues_ = [
-            ary.sycl_queue,
-        ]
-        usm_types_ = [
-            ary.usm_type,
-        ]
     if not isinstance(inds, (list, tuple)):
         inds = (inds,)
 
-    _validate_indices(inds, queues_, usm_types_)
+    exec_q, vals_usm_type = _get_indices_queue_usm_type(
+        inds, ary.sycl_queue, ary.usm_type
+    )
 
-    vals_usm_type = dpctl.utils.get_coerced_usm_type(usm_types_)
-    exec_q = dpctl.utils.get_execution_queue(queues_)
     if exec_q is not None:
         if not isinstance(vals, dpt.usm_ndarray):
             vals = dpt.asarray(
@@ -1080,8 +1088,7 @@ def _put_multi_index(ary, inds, p, vals, mode=0):
             "be associated with the same queue."
         )
 
-    if len(inds) > 1:
-        inds = _prepare_indices_arrays(inds, exec_q, vals_usm_type)
+    inds = _prepare_indices_arrays(inds, exec_q, vals_usm_type)
 
     ind0 = inds[0]
     ary_sh = ary.shape

dpctl/tensor/_slicing.pxi

@@ -17,6 +17,7 @@
 import numbers
 from operator import index
 from cpython.buffer cimport PyObject_CheckBuffer
+from numpy import ndarray
 
 
 cdef bint _is_buffer(object o):
@@ -46,7 +47,7 @@ cdef Py_ssize_t _slice_len(
 
 cdef bint _is_integral(object x) except *:
     """Gives True if x is an integral slice spec"""
-    if isinstance(x, usm_ndarray):
+    if isinstance(x, (ndarray, usm_ndarray)):
         if x.ndim > 0:
             return False
         if x.dtype.kind not in "ui":
@@ -74,7 +75,7 @@ cdef bint _is_integral(object x) except *:
 
 cdef bint _is_boolean(object x) except *:
     """Gives True if x is an integral slice spec"""
-    if isinstance(x, usm_ndarray):
+    if isinstance(x, (ndarray, usm_ndarray)):
         if x.ndim > 0:
             return False
         if x.dtype.kind not in "b":
@@ -185,7 +186,7 @@ def _basic_slice_meta(ind, shape : tuple, strides : tuple, offset : int):
             raise IndexError(
                 "Index {0} is out of range for axes 0 with "
                 "size {1}".format(ind, shape[0]))
-    elif isinstance(ind, usm_ndarray):
+    elif isinstance(ind, (ndarray, usm_ndarray)):
         return (shape, strides, offset, (ind,), 0)
     elif isinstance(ind, tuple):
         axes_referenced = 0
@@ -216,7 +217,7 @@ def _basic_slice_meta(ind, shape : tuple, strides : tuple, offset : int):
                 axes_referenced += 1
                 if not array_streak_started and array_streak_interrupted:
                     explicit_index += 1
-            elif isinstance(i, usm_ndarray):
+            elif isinstance(i, (ndarray, usm_ndarray)):
                 if not seen_arrays_yet:
                     seen_arrays_yet = True
                     array_streak_started = True
@@ -302,7 +303,7 @@ def _basic_slice_meta(ind, shape : tuple, strides : tuple, offset : int):
                     array_streak = False
             elif _is_integral(ind_i):
                 if array_streak:
-                    if not isinstance(ind_i, usm_ndarray):
+                    if not isinstance(ind_i, (ndarray, usm_ndarray)):
                         ind_i = index(ind_i)
                         # integer will be converted to an array,
                         # still raise if OOB
@@ -337,7 +338,7 @@ def _basic_slice_meta(ind, shape : tuple, strides : tuple, offset : int):
                             "Index {0} is out of range for axes "
                             "{1} with size {2}".format(ind_i, k, shape[k])
                         )
-            elif isinstance(ind_i, usm_ndarray):
+            elif isinstance(ind_i, (ndarray, usm_ndarray)):
                 if not array_streak:
                     array_streak = True
                 if not advanced_start_pos_set:

dpctl/tests/test_usm_ndarray_indexing.py

@@ -440,6 +440,28 @@ def test_advanced_slice16():
     assert isinstance(y, dpt.usm_ndarray)
 
 
+def test_integer_indexing_numpy_array():
+    q = get_queue_or_skip()
+    ii = np.asarray([1, 2])
+    x = dpt.arange(10, dtype="i4", sycl_queue=q)
+    y = x[ii]
+    assert isinstance(y, dpt.usm_ndarray)
+    assert y.shape == ii.shape
+    assert dpt.all(dpt.asarray(ii, sycl_queue=q) == y)
+
+
+def test_boolean_indexing_numpy_array():
+    q = get_queue_or_skip()
+    ii = np.asarray(
+        [False, True, True, False, False, False, False, False, False, False]
+    )
+    x = dpt.arange(10, dtype="i4", sycl_queue=q)
+    y = x[ii]
+    assert isinstance(y, dpt.usm_ndarray)
+    assert y.shape == (2,)
+    assert dpt.all(x[1:3] == y)
+
+
 def test_boolean_indexing_validation():
     get_queue_or_skip()
     x = dpt.zeros(10, dtype="i4")