[v1.x] Onnx export support for batch_dot

python/mxnet/contrib/onnx/mx2onnx/_op_translations.py

@@ -3555,3 +3555,104 @@ def convert_broadcast_like(node, **kwargs):
     ]
 
     return nodes
+
+
+@mx_op.register("batch_dot")
+def convert_batch_dot(node, **kwargs):
+    """Map MXNet's batch_dot operator attributes to onnx's operator.
+    """
+    from onnx.helper import make_node
+    name, input_nodes, attrs = get_inputs(node, kwargs)
+
+    lhs = input_nodes[0]
+    rhs = input_nodes[1]
+    transpose_a = str(attrs.get('transpose_a', 'False'))
+    transpose_b = str(attrs.get('transpose_b', 'False'))
+    perm = [0, 2, 1]
+
+    if transpose_a == 'False' and transpose_b == 'False':
+        nodes = [
+            make_node('MatMul', [lhs, rhs], [name]),
+        ]
+        return nodes
+
+    nodes = [
+        create_tensor([-2], name+'_-2', kwargs['initializer']),
+        create_tensor([-1], name+'_-1', kwargs['initializer']),
+        create_tensor([0], name+'_0', kwargs['initializer']),
+        create_tensor([100], name+'_100', kwargs['initializer']),
+    ]
+
+    if transpose_a != 'False' and transpose_b == 'False':
+        nodes += [
+            make_node('Shape', [lhs], [name+'_lhs_shape']),
+            make_node('Shape', [name+'_lhs_shape'], [name+'_lhs_dim']),
+            make_node('Slice', [name+'_lhs_shape', name+'_0', name+'_-2'],
+                      [name+'_lhs_slice0']),
+            make_node('Slice', [name+'_lhs_shape', name+'_-2', name+'_100'],
+                      [name+'_lhs_slice1']),
+            make_node('Concat', [name+'_-1', name+'_lhs_slice1'], [name+'_lhs_concat1'], axis=0),
+            make_node('Reshape', [lhs, name+'_lhs_concat1'], [name+'_lhs_3d']),
+            make_node('Transpose', [name+'_lhs_3d'], [name+'_lhs_3d_transpose'], perm=perm),
+            make_node('Shape', [name+'_lhs_3d_transpose'], [name+'_lhs_shape_3d']),
+            make_node('Slice', [name+'_lhs_shape_3d', name+'_-2', name+'_100'],
+                      [name+'_lhs_slice2']),
+            make_node('Concat', [name+'_lhs_slice0', name+'_lhs_slice2'], [name+'_lhs_concat2'], axis=0),
+            make_node('Reshape', [name+'_lhs_3d_transpose', name+'_lhs_concat2'], [name+'_lhs']),
+            make_node('MatMul', [name+'_lhs', rhs], [name]),
+        ]
+
+    elif transpose_a == 'False' and transpose_b != 'False':
+        nodes += [
+            make_node('Shape', [rhs], [name+'_rhs_shape']),
+            make_node('Shape', [name+'_rhs_shape'], [name+'_rhs_dim']),
+            make_node('Slice', [name+'_rhs_shape', name+'_0', name+'_-2'],
+                      [name+'_rhs_slice0']),
+            make_node('Slice', [name+'_rhs_shape', name+'_-2', name+'_100'],
+                      [name+'_rhs_slice1']),
+            make_node('Concat', [name+'_-1', name+'_rhs_slice1'], [name+'_rhs_concat1'], axis=0),
+            make_node('Reshape', [rhs, name+'_rhs_concat1'], [name+'_rhs_3d']),
+            make_node('Transpose', [name+'_rhs_3d'], [name+'_rhs_3d_transpose'], perm=perm),
+            make_node('Shape', [name+'_rhs_3d_transpose'], [name+'_rhs_shape_3d']),
+            make_node('Slice', [name+'_rhs_shape_3d', name+'_-2', name+'_100'],
+                      [name+'_rhs_slice2']),
+            make_node('Concat', [name+'_rhs_slice0', name+'_rhs_slice2'], [name+'_rhs_concat2'], axis=0),
+            make_node('Reshape', [name+'_rhs_3d_transpose', name+'_rhs_concat2'], [name+'_rhs']),
+            make_node('MatMul', [lhs, name+'_rhs'], [name]),
+        ]
+
+    else:
+        nodes += [
+            make_node('Shape', [lhs], [name+'_lhs_shape']),
+            make_node('Shape', [name+'_lhs_shape'], [name+'_lhs_dim']),
+            make_node('Slice', [name+'_lhs_shape', name+'_0', name+'_-2'],
+                      [name+'_lhs_slice0']),
+            make_node('Slice', [name+'_lhs_shape', name+'_-2', name+'_100'],
+                      [name+'_lhs_slice1']),
+            make_node('Concat', [name+'_-1', name+'_lhs_slice1'], [name+'_lhs_concat1'], axis=0),
+            make_node('Reshape', [lhs, name+'_lhs_concat1'], [name+'_lhs_3d']),
+            make_node('Transpose', [name+'_lhs_3d'], [name+'_lhs_3d_transpose'], perm=perm),
+            make_node('Shape', [name+'_lhs_3d_transpose'], [name+'_lhs_shape_3d']),
+            make_node('Slice', [name+'_lhs_shape_3d', name+'_-2', name+'_100'],
+                      [name+'_lhs_slice2']),
+            make_node('Concat', [name+'_lhs_slice0', name+'_lhs_slice2'], [name+'_lhs_concat2'], axis=0),
+            make_node('Reshape', [name+'_lhs_3d_transpose', name+'_lhs_concat2'], [name+'_lhs']),
+
+            make_node('Shape', [rhs], [name+'_rhs_shape']),
+            make_node('Shape', [name+'_rhs_shape'], [name+'_rhs_dim']),
+            make_node('Slice', [name+'_rhs_shape', name+'_0', name+'_-2'],
+                      [name+'_rhs_slice0']),
+            make_node('Slice', [name+'_rhs_shape', name+'_-2', name+'_100'],
+                      [name+'_rhs_slice1']),
+            make_node('Concat', [name+'_-1', name+'_rhs_slice1'], [name+'_rhs_concat1'], axis=0),
+            make_node('Reshape', [rhs, name+'_rhs_concat1'], [name+'_rhs_3d']),
+            make_node('Transpose', [name+'_rhs_3d'], [name+'_rhs_3d_transpose'], perm=perm),
+            make_node('Shape', [name+'_rhs_3d_transpose'], [name+'_rhs_shape_3d']),
+            make_node('Slice', [name+'_rhs_shape_3d', name+'_-2', name+'_100'],
+                      [name+'_rhs_slice2']),
+            make_node('Concat', [name+'_rhs_slice0', name+'_rhs_slice2'], [name+'_rhs_concat2'], axis=0),
+            make_node('Reshape', [name+'_rhs_3d_transpose', name+'_rhs_concat2'], [name+'_rhs']),
+            make_node('MatMul', [name+'_lhs', name+'_rhs'], [name]),
+        ]
+
+    return nodes

tests/python-pytest/onnx/test_operators.py

@@ -644,3 +644,16 @@ def test_onnx_export_broadcast_like(tmp_path, dtype, lhs_axes, rhs_axes):
     op_export_test('broadcast_like1', M1, [x, y], tmp_path)
     M2 = def_model('broadcast_like', lhs_axes=lhs_axes, rhs_axes=rhs_axes)
     op_export_test('broadcast_like2', M2, [x, y], tmp_path)
+
+@pytest.mark.parametrize('dtype', ['float32', 'float64'])
+@pytest.mark.parametrize('transpose_a', [True, False])
+@pytest.mark.parametrize('transpose_b', [True, False])
+def test_onnx_export_batch_dot(tmp_path, dtype, transpose_a, transpose_b):
+    x1 = mx.nd.random.normal(0, 10, (2, 3, 4, 5, 6), dtype=dtype)
+    y1 = mx.nd.random.normal(0, 10, (2, 3, 4, 6, 5), dtype=dtype)
+    M1 = def_model('batch_dot')
+    op_export_test('batch_dot1', M1, [x1, y1], tmp_path)
+    x2 = mx.nd.random.normal(0, 10, (2, 3, 4, 5, 5), dtype=dtype)
+    y2 = mx.nd.random.normal(0, 10, (2, 3, 4, 5, 5), dtype=dtype)
+    M2 = def_model('batch_dot', transpose_a=transpose_a, transpose_b=transpose_b)
+    op_export_test('batch_dot2', M2, [x2, y2], tmp_path)