add addmm dyg mode, test=develop (#24100)

python/paddle/fluid/tests/unittests/test_addmm_op.py

@@ -133,5 +133,19 @@ class TestAddMMOp3(OpTest):
         self.check_grad(['Input'], 'Out', no_grad_set=None)
 
 
+class TestAddMMOp4(unittest.TestCase):
+    def test_api_with_dygraph(self):
+        np_input = np.random.random((20, 30)).astype(np.float32)
+        np_x = np.random.random((20, 6)).astype(np.float32)
+        np_y = np.random.random((6, 30)).astype(np.float32)
+
+        with fluid.dygraph.guard():
+            input = fluid.dygraph.to_variable(np_input)
+            x = fluid.dygraph.to_variable(np_x)
+            y = fluid.dygraph.to_variable(np_y)
+            out = paddle.tensor.addmm(input, x, y)
+            assert np.allclose(np_input + np.dot(np_x, np_y), out.numpy())
+
+
 if __name__ == "__main__":
     unittest.main()

python/paddle/tensor/math.py

@@ -1001,6 +1001,10 @@ def addmm(input, x, y, alpha=1.0, beta=1.0, name=None):
             # [[10.5 10.5]
             # [10.5 10.5]]
     """
+    if in_dygraph_mode():
+        out = core.ops.addmm(input, x, y, "Alpha", alpha, "Beta", beta)
+        return out
+
     inputs = {'Input': input, "X": x, "Y": y}
     attrs = {'Alpha': alpha, 'Beta': beta}