completely remove mixed mode deterministic test as prefix mode could cover it (#11783)

Co-authored-by: Baizhou Zhang <sobereddiezhang@gmail.com>

python/sglang/test/test_deterministic.py

@@ -5,9 +5,6 @@ Usage:
 # Single mode: test determinism with varying batch sizes
 python3 -m sglang.test.test_deterministic --n-trials 50 --test-mode single
 
-# Mixed mode: test with mixed prompts
-python3 -m sglang.test.test_deterministic --n-trials 50 --test-mode mixed
-
 # Prefix mode: test with shared prefixes
 python3 -m sglang.test.test_deterministic --n-start 1 --n-trials 50 --test-mode prefix
 
@@ -79,7 +76,6 @@ class BenchArgs:
             default=BenchArgs.test_mode,
             choices=[
                 "single",
-                "mixed",
                 "prefix",
                 "radix_cache",
             ],
@@ -181,52 +177,6 @@ def send_single(
         return ret["text"]
 
 
-def send_mixed(args, batch_size: int):
-    num_long_prompt = 0 if batch_size <= 10 else random.randint(1, 10)
-    num_prompt_1 = random.randint(1, batch_size - num_long_prompt)
-    num_prompt_2 = batch_size - num_prompt_1 - num_long_prompt
-
-    json_data = {
-        "text": [PROMPT_1] * num_prompt_1
-        + [PROMPT_2] * num_prompt_2
-        + [LONG_PROMPT] * num_long_prompt,
-        "sampling_params": {
-            "temperature": args.temperature,
-            "max_new_tokens": args.max_new_tokens,
-            "frequency_penalty": args.frequency_penalty,
-            "presence_penalty": args.presence_penalty,
-        },
-        "return_logprob": args.return_logprob,
-        "stream": args.stream,
-    }
-
-    if args.sampling_seed is not None:
-        json_data["sampling_params"]["sampling_seed"] = args.sampling_seed
-
-    response = requests.post(
-        f"http://{args.host}:{args.port}/generate",
-        json=json_data,
-        stream=args.stream,
-    )
-    ret = response.json()
-    if response.status_code != 200:
-        print(ret)
-        return -1, -1, -1
-
-    prompt_1_ret = [ret[i]["text"] for i in range(num_prompt_1)]
-    prompt_2_ret = [
-        ret[i]["text"] for i in range(num_prompt_1, num_prompt_1 + num_prompt_2)
-    ]
-    long_prompt_ret = [
-        ret[i]["text"]
-        for i in range(
-            num_prompt_1 + num_prompt_2, num_prompt_1 + num_prompt_2 + num_long_prompt
-        )
-    ]
-
-    return prompt_1_ret, prompt_2_ret, long_prompt_ret
-
-
 def send_prefix(args, batch_size: int, prompts: List[str]):
     requests.post(f"http://{args.host}:{args.port}/flush_cache")
 
@@ -282,38 +232,6 @@ def test_deterministic(args):
         print(f"Total samples: {len(texts)}, Unique samples: {len(set(texts))}")
         return [len(set(texts))]
 
-    elif args.test_mode == "mixed":
-        # In mixed mode, we send a mixture of two short prompts and one long prompt in the same batch with batch size ranging from 1 to n_trials.
-        output_prompt_1 = []
-        output_prompt_2 = []
-        output_long_prompt = []
-        for i in range(1, args.n_trials + 1):
-            batch_size = i
-            ret_prompt_1, ret_prompt_2, ret_long_prompt = send_mixed(args, batch_size)
-            output_prompt_1.extend(ret_prompt_1)
-            output_prompt_2.extend(ret_prompt_2)
-            output_long_prompt.extend(ret_long_prompt)
-
-            print(
-                f"Testing Trial {i} with batch size {batch_size}, number of prompt 1: {len(ret_prompt_1)}, number of prompt 2: {len(ret_prompt_2)}, number of long prompt: {len(ret_long_prompt)}"
-            )
-
-        print(
-            f"Prompt 1: total samples: {len(output_prompt_1)}, Unique samples: {len(set(output_prompt_1))}"
-        )
-        print(
-            f"Prompt 2: total samples: {len(output_prompt_2)}, Unique samples: {len(set(output_prompt_2))}"
-        )
-        print(
-            f"Long prompt: total samples: {len(output_long_prompt)}, Unique samples: {len(set(output_long_prompt))}"
-        )
-
-        return [
-            len(set(output_prompt_1)),
-            len(set(output_prompt_2)),
-            len(set(output_long_prompt)),
-        ]
-
     elif args.test_mode == "prefix":
         # In prefix mode, we create prompts from the same long prompt, with different lengths of common prefix.
         len_prefix = [1, 511, 2048, 4097]

python/sglang/test/test_deterministic_utils.py

@@ -56,18 +56,6 @@ class TestDeterministicBase(CustomTestCase):
         for result in results:
             assert result == 1
 
-    def test_mixed(self):
-        args = BenchArgs()
-        url = DEFAULT_URL_FOR_TEST
-        args.host, args.port = self._extract_host_and_port(url)
-        args.test_mode = "mixed"
-        args.n_start = 10
-        args.n_trials = 20
-        args.temperature = 0.5  # test for deterministic sampling
-        results = test_deterministic(args)
-        for result in results:
-            assert result == 1
-
     def test_prefix(self):
         args = BenchArgs()
         url = DEFAULT_URL_FOR_TEST