Unify GSM8K eval path to Chat API for regression CI readiness (#21667)

test/manual/piecewise_cudagraph/test_disaggregation_piecewise_cuda_graph.py

@@ -1,7 +1,7 @@
 import unittest
 from types import SimpleNamespace
 
-from sglang.test.few_shot_gsm8k import run_eval as run_eval_few_shot_gsm8k
+from sglang.test.run_eval import run_eval
 from sglang.test.server_fixtures.disaggregation_fixture import (
     PDDisaggregationServerBase,
 )
@@ -70,18 +70,18 @@ class TestDisaggregationPiecewiseCudaGraph(PDDisaggregationServerBase):
     def test_gsm8k_accuracy(self):
         """Verify that piecewise cuda graph works correctly in prefill server"""
         args = SimpleNamespace(
-            num_shots=5,
-            data_path=None,
-            num_questions=200,
-            max_new_tokens=512,
-            parallel=128,
-            host=f"http://{self.base_host}",
-            port=int(self.lb_port),
+            base_url=self.base_url,
+            model=self.model,
+            eval_name="gsm8k",
+            api="completion",
+            max_tokens=512,
+            num_examples=200,
+            num_threads=128,
         )
-        metrics = run_eval_few_shot_gsm8k(args)
-        print(f"GSM8K accuracy with piecewise cuda graph: {metrics['accuracy']:.3f}")
+        metrics = run_eval(args)
+        print(f"GSM8K accuracy with piecewise cuda graph: {metrics['score']:.3f}")
 
-        self.assertGreater(metrics["accuracy"], 0.62)
+        self.assertGreater(metrics["score"], 0.62)
 
 
 if __name__ == "__main__":