added round fwd onednn kernel (#39653)

paddle/fluid/operators/mkldnn/activation_mkldnn_op.cc

@@ -262,6 +262,10 @@ using EluMKLDNNFunctor = MKLDNNActivationFunc<T, dnnl::algorithm::eltwise_elu>;
 template <typename T>
 using ExpMKLDNNFunctor = MKLDNNActivationFunc<T, dnnl::algorithm::eltwise_exp>;
 
+template <typename T>
+using RoundMKLDNNFunctor =
+    MKLDNNActivationFunc<T, dnnl::algorithm::eltwise_round>;
+
 template <typename T>
 using ReluMKLDNNGradFunctor =
     MKLDNNActivationGradFunc<T, dnnl::algorithm::eltwise_relu>;
@@ -330,6 +334,10 @@ namespace ops = paddle::operators;
       ops::MKLDNNActivationGradKernel<                                        \
           ops::grad_functor<paddle::platform::bfloat16>>);
 
+#define REGISTER_ACTIVATION_MKLDNN_KERNEL_FWD_ONLY(act_type, functor) \
+  REGISTER_OP_KERNEL(act_type, MKLDNN, ::paddle::platform::CPUPlace,  \
+                     ops::MKLDNNActivationKernel<ops::functor<float>>);
+
 #define FOR_EACH_MKLDNN_KERNEL_FUNCTOR(__macro)                            \
   __macro(relu6, Relu6MKLDNNFunctor, Relu6MKLDNNGradFunctor);              \
   __macro(leaky_relu, ReluMKLDNNFunctor, ReluMKLDNNGradFunctor);           \
@@ -341,6 +349,8 @@ namespace ops = paddle::operators;
   __macro(exp, ExpMKLDNNFunctor, ExpMKLDNNGradUseOutFunctor);
 
 FOR_EACH_MKLDNN_KERNEL_FUNCTOR(REGISTER_ACTIVATION_MKLDNN_KERNEL);
+REGISTER_ACTIVATION_MKLDNN_KERNEL_FWD_ONLY(round, RoundMKLDNNFunctor);
+
 REGISTER_ACTIVATION_MKLDNN_BF16_KERNEL(relu, ReluMKLDNNFunctor,
                                        ReluMKLDNNGradFunctor);
 REGISTER_ACTIVATION_MKLDNN_BF16_KERNEL(gelu, GeluMKLDNNFunctor,

python/paddle/fluid/tests/unittests/mkldnn/test_activation_mkldnn_op.py

@@ -328,6 +328,18 @@ class TestMKLDNNMish(TestActivation):
         self.attrs = {"use_mkldnn": True}
 
 
+class TestMKLDNNRound(TestActivation):
+    def setUp(self):
+        self.op_type = "round"
+
+        x = np.random.uniform(0.1, 1, [2, 4, 3, 5]).astype(np.float32)
+        out = np.round(x)
+
+        self.inputs = {'X': x}
+        self.outputs = {'Out': out}
+        self.attrs = {"use_mkldnn": True}
+
+
 class TestMKLDNNSigmoidDim4(TestSigmoid):
     def setUp(self):
         super(TestMKLDNNSigmoidDim4, self).setUp()