add inference

uni_pc.py

@@ -549,7 +549,7 @@ class UniPC:
         if not self.use_afs:
             fir_output = self.noise_prediction_fn(x, vec_t)
         else:
-            fir_output = x * 0.98  # ultilize npnet there in the future
+            fir_output = x  # ultilize npnet there in the future
             if npnet_x is not None and npnet_scale is not None:
                 fir_output = npnet_x 
                 # fir_output = fir_output - npnet_scale * (npnet_out - fir_output) #guidance_scale * (noise - noise_uncond)