[FDConfig] Turn on the CUDAGraph + Speculative Decoding switch (#4511)

Author: gongshaotian

fastdeploy/config.py

@@ -1511,14 +1511,13 @@ def postprocess(self):
 
         # Adjustment GraphOptConfig
         if (
-            (self.speculative_config is not None and self.speculative_config.method is not None)
+            (self.scheduler_config.splitwise_role != "mixed")
             or (self.model_config is not None and self.model_config.enable_mm is True)
             or (self.load_config is not None and self.load_config.dynamic_load_weight is True)
-            or (self.scheduler_config.splitwise_role != "mixed")
         ):
             self.graph_opt_config.use_cudagraph = False
             logger.info(
-                "CUDAGraph does not support to be started together with SpeculativeDecode and MultiModel temporarily, but has been automatically closed!"
+                "CUDAGraph does not support to be started together with MultiModel temporarily, but has been automatically closed!"
             )
         if self.load_config is not None and self.load_config.dynamic_load_weight is True:
             self.graph_opt_config.graph_opt_level = 0
@@ -1634,10 +1633,6 @@ def check(self):
 
         # Check graph optimization config
         if self.graph_opt_config.use_cudagraph:
-            if self.speculative_config is not None:
-                assert (
-                    self.speculative_config.method is None
-                ), "CUDAGraph does not support the simultaneous use of Speculative Decoding"
             if self.model_config is not None:
                 assert (
                     self.model_config.enable_mm is not True