fix fp16 (#46713)

* fix fp16

* remove debug info

* code style refine

paddle/fluid/inference/tensorrt/plugin/preln_residual_bias_plugin.cu

@@ -80,6 +80,7 @@ __global__ void generalAddBiasResidualLayerNormOpt2(
     int m,
     int n,
     float epsilon) {
+#if CUDA_ARCH_FP16_SUPPORTED(__CUDA_ARCH__)
   __shared__ float s_mean;
   __shared__ float s_variance;
   float x_sum = 0.0f;
@@ -138,6 +139,7 @@ __global__ void generalAddBiasResidualLayerNormOpt2(
     }
     normed_output[index] = val;
   }
+#endif
 }
 #endif
 
@@ -418,6 +420,7 @@ int PrelnResidualBiasPluginDynamic::enqueue(
     float *var = nullptr;
     const int VecSize = 8;
     // if odd
+#if CUDA_ARCH_FP16_SUPPORTED(__CUDA_ARCH__)
     if (hidden & 1 == 0) {
       int half_n = hidden / 2;
       int half_n_32 = (half_n + 31) / 32 * 32;
@@ -459,6 +462,32 @@ int PrelnResidualBiasPluginDynamic::enqueue(
           var,
           stream);
     }
+#else
+    paddle::operators::FusedLayernormResidualDropoutBiasFunctor<half,
+                                                                uint8_t,
+                                                                VecSize,
+                                                                float,
+                                                                false>()(
+        rows,
+        cols,
+        seed,
+        dropout_prob,
+        is_upscale_in_train,
+        is_test,
+        increment,
+        epsilon,
+        src,
+        residual,
+        bias,
+        scale,
+        layernorm_bias,
+        mask_data,
+        dst,
+        layernorm_dst,
+        mean,
+        var,
+        stream);
+#endif
 #else
     PADDLE_THROW(platform::errors::Fatal(
         "The Ernie(Bert) tensorRT plugin should be "