Beta spec-overlap for EAGLE (#11398)

Co-authored-by: Lianmin Zheng <15100009+merrymercy@users.noreply.github.com>
Co-authored-by: Hanming Lu <69857889+hanming-lu@users.noreply.github.com>

test/srt/test_eagle_infer_beta.py

+import unittest
+from types import SimpleNamespace
+
+from sglang.srt.utils import kill_process_tree
+from sglang.test.few_shot_gsm8k import run_eval
+from sglang.test.test_utils import (
+    DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
+    DEFAULT_URL_FOR_TEST,
+    CustomTestCase,
+    popen_launch_server,
+)
+
+
+class TestEagleBS1(CustomTestCase):
+    num_questions = 60
+
+    @classmethod
+    def setUpClass(cls):
+        cls.model = "meta-llama/Llama-2-7b-chat-hf"
+        cls.base_url = DEFAULT_URL_FOR_TEST
+        cls.process = popen_launch_server(
+            cls.model,
+            cls.base_url,
+            timeout=DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
+            other_args=[
+                "--trust-remote-code",
+                "--attention-backend",
+                "triton",
+                "--enable-beta-spec",
+                "--speculative-algorithm",
+                "EAGLE",
+                "--speculative-draft-model",
+                "lmzheng/sglang-EAGLE-llama2-chat-7B",
+                "--speculative-num-steps",
+                "5",
+                "--speculative-eagle-topk",
+                "1",
+                "--speculative-num-draft-tokens",
+                "6",
+                "--max-running-requests",
+                "1",
+            ],
+        )
+
+    @classmethod
+    def tearDownClass(cls):
+        kill_process_tree(cls.process.pid)
+
+    def test_gsm8k(self):
+        args = SimpleNamespace(
+            num_shots=5,
+            data_path=None,
+            num_questions=self.num_questions,
+            max_new_tokens=512,
+            parallel=128,
+            host="http://127.0.0.1",
+            port=int(self.base_url.split(":")[-1]),
+        )
+        metrics = run_eval(args)
+        print(f"TestEagleBS1 -- {metrics=}")
+        self.assertGreater(
+            metrics["accuracy"], 0.33
+        )  # 0.3333 for 60 questions; 0.234 for 1319 questions
+
+
+class TestEagleLargeBS(CustomTestCase):
+    num_questions = 10000
+    max_running_requests = 64
+    other_args = [
+        "--trust-remote-code",
+        "--attention-backend",
+        "triton",
+        "--enable-beta-spec",
+        "--speculative-algorithm",
+        "EAGLE",
+        "--speculative-draft-model",
+        "lmzheng/sglang-EAGLE-llama2-chat-7B",
+        "--speculative-num-steps",
+        "5",
+        "--speculative-eagle-topk",
+        "1",
+        "--speculative-num-draft-tokens",
+        "6",
+        "--mem-fraction-static",
+        "0.75",
+        "--max-running-requests",
+        str(max_running_requests),
+        "--cuda-graph-bs",
+        *[str(i) for i in range(1, max_running_requests + 1)],
+    ]
+
+    @classmethod
+    def setUpClass(cls):
+        cls.model = "meta-llama/Llama-2-7b-chat-hf"
+        cls.base_url = DEFAULT_URL_FOR_TEST
+        cls.process = popen_launch_server(
+            cls.model,
+            cls.base_url,
+            timeout=DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
+            other_args=cls.other_args,
+        )
+
+    @classmethod
+    def tearDownClass(cls):
+        kill_process_tree(cls.process.pid)
+
+    def test_gsm8k(self):
+        args = SimpleNamespace(
+            num_shots=5,
+            data_path=None,
+            num_questions=self.num_questions,
+            max_new_tokens=512,
+            parallel=128,
+            host="http://127.0.0.1",
+            port=int(self.base_url.split(":")[-1]),
+        )
+        metrics = run_eval(args)
+        print(f"TestEagleLargeBS -- {metrics=}")
+        self.assertGreater(
+            metrics["accuracy"], 0.23
+        )  # 0.3333 for 60 questions; 0.234 for 1319 questions
+
+
+if __name__ == "__main__":
+    unittest.main()