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Code Issues Actions 5 Packages Projects Releases Wiki Activity

Support limit thinking lengths (#4069)

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Co-authored-by: K11OntheBoat <“ruianmaidanglao@163.com”>
This commit is contained in:
K11OntheBoat
2025-09-25 19:55:56 +08:00
committed by GitHub
parent 0c6f1932c5
commit 4515ad21e9
9 changed files with 194 additions and 28 deletions
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1
fastdeploy/config.py
View File

@@ -224,6 +224,7 @@ class ModelConfig:
self.vision_config = PretrainedConfig.from_dict(self.vision_config)
self.ori_vocab_size = args.get("ori_vocab_size", self.vocab_size)
self.think_end_id = args.get("think_end_id", -1)
architectures = self.architectures[0]

10
fastdeploy/engine/engine.py
View File

@@ -34,6 +34,7 @@ import numpy as np
import paddle
from tqdm import tqdm
from fastdeploy.config import ErnieArchitectures
from fastdeploy.engine.args_utils import EngineArgs
from fastdeploy.engine.common_engine import EngineService
from fastdeploy.engine.expert_service import start_data_parallel_service
@@ -470,6 +471,14 @@ class LLMEngine:
else len(self.data_processor.tokenizer.vocab)
)
is_ernie = ErnieArchitectures.contains_ernie_arch(self.cfg.model_config.architectures)
if is_ernie:
self.cfg.model_config.think_end_id = self.data_processor.tokenizer.get_vocab().get("</think>", -1)
if self.cfg.model_config.think_end_id != -1:
llm_logger.info(f"Get think_end_id {self.cfg.model_config.think_end_id} from vocab.")
else:
llm_logger.info("No </think> token found in vocabulary, the model can not do reasoning.")
ports = ",".join(self.cfg.parallel_config.engine_worker_queue_port)
ips = None
if self.cfg.ips is not None:
@@ -496,6 +505,7 @@ class LLMEngine:
f" --data_parallel_size {self.cfg.parallel_config.data_parallel_size}"
f" --quantization '{json.dumps(self.cfg.model_config.quantization)}'"
f" --ori_vocab_size {ori_vocab_size}"
f" --think_end_id {self.cfg.model_config.think_end_id}"
f" --speculative_config '{self.cfg.speculative_config.to_json_string()}'"
f" --graph_optimization_config '{self.cfg.graph_opt_config.to_json_string()}'"
f" --guided_decoding_backend {self.cfg.guided_decoding_backend}"

2
fastdeploy/entrypoints/engine_client.py
View File

@@ -155,8 +155,6 @@ class EngineClient:
task["prompt_token_ids_len"] = len(task["prompt_token_ids"])
input_ids_len = task["prompt_token_ids_len"]
task["max_tokens"] = min(self.max_model_len - input_ids_len, task.get("max_tokens"))
if task.get("reasoning_max_tokens", None) is None:
task["reasoning_max_tokens"] = max(int(task["max_tokens"] * 0.8), 1)
min_tokens = task.get("min_tokens", 1)
if "messages" in task:
del task["messages"]

4
fastdeploy/input/ernie4_5_vl_processor/ernie4_5_vl_processor.py
View File

@@ -252,6 +252,10 @@ class Ernie4_5_VLProcessor(Ernie4_5Processor):
request["prompt_token_ids"] = request["prompt_token_ids"][: max_model_len - 1]
if request.get("max_tokens") is None:
request["max_tokens"] = max(1, max_model_len - len(request["prompt_token_ids"]))
else:
request["max_tokens"] = min(max_model_len - len(request["prompt_token_ids"]), request["max_tokens"])
if request.get("reasoning_max_tokens") is None:
request["reasoning_max_tokens"] = max(int(request["max_tokens"] * 0.8), 1)
data_processor_logger.info(f"Processed request {request}")
return request

10
fastdeploy/model_executor/pre_and_post_process.py
View File

@@ -195,8 +195,9 @@ def post_process_normal(
) -> ModelRunnerOutput:
"""Post-processing steps after completing a single token generation."""
# handle vl:
if model_output.enable_thinking:
exists_think_end = sampler_output.sampled_token_ids == model_output.think_end_id
if model_output.think_end_id != -1:
thinking_mask = model_output.enable_thinking
exists_think_end = (sampler_output.sampled_token_ids == model_output.think_end_id) & thinking_mask
paddle.assign(
paddle.where(
exists_think_end,
@@ -206,9 +207,10 @@ def post_process_normal(
model_output.need_think_end,
)
reasoning_index_update_cond = model_output.need_think_end.cast("bool") & thinking_mask
paddle.assign(
paddle.where(
model_output.need_think_end.cast("bool"),
reasoning_index_update_cond,
model_output.reasoning_index - 1,
model_output.reasoning_index,
),
@@ -219,6 +221,8 @@ def post_process_normal(
(sampler_output.sampled_token_ids == model_output.eos_token_id.T).any(axis=1, keepdim=True)
| (model_output.reasoning_index == 0)
) & (model_output.need_think_end > 0)
stop_wo_think = stop_wo_think & thinking_mask
sampler_output.sampled_token_ids = paddle.where(
stop_wo_think,
model_output.think_end_id,

70
fastdeploy/worker/gpu_model_runner.py
View File

@@ -322,15 +322,27 @@ class GPUModelRunner(ModelRunnerBase):
else:
position_ids = None
enable_thinking = request.get("enable_thinking", True)
enable_thinking = enable_thinking if enable_thinking is not None else True
self.share_inputs["enable_thinking"][:] = enable_thinking
self.share_inputs["need_think_end"][idx : idx + 1, :] = 1 if enable_thinking else 0
self.share_inputs["reasoning_index"][idx : idx + 1, :] = request.get("reasoning_max_tokens", 2048)
self.share_inputs["rope_emb"][idx : idx + 1, :] = self.prepare_rope3d(
position_ids, request.get("max_tokens", 2048)
)
if request.get("enable_thinking", False):
# Enable thinking
req_reasoning_max_tokens = request.get("reasoning_max_tokens")
req_max_tokens = request.get("max_tokens")
final_reasoning_tokens = (
req_reasoning_max_tokens if req_reasoning_max_tokens is not None else req_max_tokens
)
self.share_inputs["enable_thinking"][idx : idx + 1] = True
self.share_inputs["need_think_end"][idx : idx + 1, :] = 1
self.share_inputs["reasoning_index"][idx : idx + 1, :] = final_reasoning_tokens
else:
# Disable thinking
self.share_inputs["enable_thinking"][idx : idx + 1] = False
self.share_inputs["need_think_end"][idx : idx + 1, :] = 0
self.share_inputs["reasoning_index"][idx : idx + 1, :] = 0
if isinstance(request.prompt_token_ids, np.ndarray):
prompt_token_ids = request.prompt_token_ids.tolist()
else:
@@ -549,16 +561,28 @@ class GPUModelRunner(ModelRunnerBase):
self.share_inputs["prompt_lens"][idx : idx + 1] = length
if self.enable_mm:
enable_thinking = request.get("enable_thinking", True)
enable_thinking = enable_thinking if enable_thinking is not None else True
self.share_inputs["enable_thinking"][:] = enable_thinking
self.share_inputs["need_think_end"][idx : idx + 1, :] = 1 if enable_thinking else 0
self.share_inputs["reasoning_index"][idx : idx + 1, :] = request.get("reasoning_max_tokens", 2048)
self.share_inputs["rope_emb"][idx : idx + 1, :] = self.prepare_rope3d(
position_ids, request.get("max_tokens", 2048)
)
self.share_inputs["seq_lens_decoder"][idx : idx + 1] = 0
if request.get("enable_thinking", False):
# Enable thinking
req_reasoning_max_tokens = request.get("reasoning_max_tokens")
req_max_tokens = request.get("max_tokens")
final_reasoning_tokens = (
req_reasoning_max_tokens if req_reasoning_max_tokens is not None else req_max_tokens
)
self.share_inputs["enable_thinking"][idx : idx + 1] = True
self.share_inputs["need_think_end"][idx : idx + 1, :] = 1
self.share_inputs["reasoning_index"][idx : idx + 1, :] = final_reasoning_tokens
else:
# Disable thinking
self.share_inputs["enable_thinking"][idx : idx + 1] = False
self.share_inputs["need_think_end"][idx : idx + 1, :] = 0
self.share_inputs["reasoning_index"][idx : idx + 1, :] = 0
def get_attr_from_request(request, attr, default_value=None):
res = request.get(attr, default_value)
if res is not None:
@@ -853,6 +877,11 @@ class GPUModelRunner(ModelRunnerBase):
# Initialize rotary position embedding
tmp_position_ids = paddle.arange(self.parallel_config.max_model_len).reshape((1, -1))
# Initialize thinking related buffers
self.share_inputs["need_think_end"] = paddle.full(shape=[max_num_seqs, 1], fill_value=0, dtype="int32")
self.share_inputs["enable_thinking"] = paddle.full(shape=[max_num_seqs, 1], fill_value=False, dtype="bool")
self.share_inputs["reasoning_index"] = paddle.full(shape=[max_num_seqs, 1], fill_value=0, dtype="int32")
# TODO(gongshaotian): move to models
if not self.enable_mm:
self.share_inputs["rope_emb"] = get_rope(
@@ -952,11 +981,6 @@ class GPUModelRunner(ModelRunnerBase):
dtype="float32",
)
self.share_inputs["image_features"] = None
self.share_inputs["need_think_end"] = paddle.full(shape=[max_num_seqs, 1], fill_value=0, dtype="int32")
self.share_inputs["enable_thinking"] = paddle.full(
shape=[1], fill_value=("ernie" in self.model_config.model_type), dtype="bool"
)
self.share_inputs["reasoning_index"] = paddle.full(shape=[max_num_seqs, 1], fill_value=0, dtype="int32")
def _prepare_inputs(self) -> None:
"""Prepare the model inputs"""
@@ -1399,10 +1423,10 @@ class GPUModelRunner(ModelRunnerBase):
),
accept_tokens=(self.share_inputs["accept_tokens"] if self.speculative_decoding else None),
accept_num=(self.share_inputs["accept_num"] if self.speculative_decoding else None),
enable_thinking=(self.share_inputs["enable_thinking"] if self.enable_mm else None),
think_end_id=(getattr(self.model_config, "think_end_id", -1) if self.enable_mm else -1),
need_think_end=(self.share_inputs["need_think_end"] if self.enable_mm else None),
reasoning_index=(self.share_inputs["reasoning_index"] if self.enable_mm else None),
enable_thinking=self.share_inputs["enable_thinking"],
think_end_id=self.model_config.think_end_id,
need_think_end=self.share_inputs["need_think_end"],
reasoning_index=self.share_inputs["reasoning_index"],
stop_token_ids=self.share_inputs["stop_seqs"],
stop_seqs_len=self.share_inputs["stop_seqs_len"],
)
@@ -1715,10 +1739,10 @@ class GPUModelRunner(ModelRunnerBase):
),
accept_tokens=(self.share_inputs["accept_tokens"] if self.speculative_decoding else None),
accept_num=(self.share_inputs["accept_num"] if self.speculative_decoding else None),
enable_thinking=(self.share_inputs["enable_thinking"] if self.enable_mm else None),
think_end_id=(getattr(self.model_config, "think_end_id", -1) if self.enable_mm else -1),
need_think_end=(self.share_inputs["need_think_end"][:num_running_requests] if self.enable_mm else None),
reasoning_index=(self.share_inputs["reasoning_index"][:num_running_requests] if self.enable_mm else None),
enable_thinking=self.share_inputs["enable_thinking"],
think_end_id=self.model_config.think_end_id,
need_think_end=self.share_inputs["need_think_end"][:num_running_requests],
reasoning_index=self.share_inputs["reasoning_index"][:num_running_requests],
stop_token_ids=self.share_inputs["stop_seqs"],
stop_seqs_len=self.share_inputs["stop_seqs_len"],
)

1
fastdeploy/worker/worker_process.py
View File

@@ -587,6 +587,7 @@ def parse_args():
help="enable expert parallel",
)
parser.add_argument("--ori_vocab_size", type=int, default=None)
parser.add_argument("--think_end_id", type=int, default=-1)
parser.add_argument(
"--quantization",

62
tests/ci_use/EB_VL_Lite/test_EB_VL_Lite_serving.py
View File

@@ -516,6 +516,21 @@ def test_chat_with_thinking(openai_client, capsys):
assert response.choices[0].message.reasoning_content is None
assert "</think>" not in response.choices[0].message.content
# test logic
reasoning_max_tokens = None
response = openai_client.chat.completions.create(
model="default",
messages=[{"role": "user", "content": "Explain gravity in a way that a five-year-old child can understand."}],
temperature=1,
stream=False,
max_tokens=20,
extra_body={
"chat_template_kwargs": {"enable_thinking": True},
"reasoning_max_tokens": reasoning_max_tokens,
},
)
assert response.choices[0].message.reasoning_content is not None
# enable thinking, streaming
reasoning_max_tokens = 3
response = openai_client.chat.completions.create(
@@ -927,3 +942,50 @@ def test_profile_reset_block_num():
f"Reset total_block_num {actual_value} 与 baseline {baseline} diff需要在5%以内"
f"Allowed range: [{lower_bound:.1f}, {upper_bound:.1f}]"
)
def test_thinking_logic_flag(openai_client, capsys):
"""
Test the interaction between token calculation logic and conditional thinking.
This test covers:
1. Default max_tokens calculation when not provided.
2. Capping of max_tokens when it exceeds model limits.
3. Default reasoning_max_tokens calculation when not provided.
4. Activation of thinking based on the final state of reasoning_max_tokens.
"""
response_case_1 = openai_client.chat.completions.create(
model="default",
messages=[{"role": "user", "content": "Explain gravity briefly."}],
temperature=1,
stream=False,
extra_body={
"chat_template_kwargs": {"enable_thinking": True},
},
)
assert response_case_1.choices[0].message.reasoning_content is not None
response_case_2 = openai_client.chat.completions.create(
model="default",
messages=[{"role": "user", "content": "Explain gravity in a way that a five-year-old child can understand."}],
temperature=1,
stream=False,
max_tokens=20,
extra_body={
"chat_template_kwargs": {"enable_thinking": True},
"reasoning_max_tokens": 5,
},
)
assert response_case_2.choices[0].message.reasoning_content is not None
response_case_3 = openai_client.chat.completions.create(
model="default",
messages=[{"role": "user", "content": "Explain gravity in a way that a five-year-old child can understand."}],
temperature=1,
stream=False,
max_tokens=20,
extra_body={
"chat_template_kwargs": {"enable_thinking": False},
},
)
assert response_case_3.choices[0].message.reasoning_content is None

62
tests/e2e/test_EB_VL_Lite_serving.py
View File

@@ -535,6 +535,21 @@ def test_chat_with_thinking(openai_client, capsys):
assert response.choices[0].message.reasoning_content is None
assert "</think>" not in response.choices[0].message.content
# test logic
reasoning_max_tokens = None
response = openai_client.chat.completions.create(
model="default",
messages=[{"role": "user", "content": "Explain gravity in a way that a five-year-old child can understand."}],
temperature=1,
stream=False,
max_tokens=20,
extra_body={
"chat_template_kwargs": {"enable_thinking": True},
"reasoning_max_tokens": reasoning_max_tokens,
},
)
assert response.choices[0].message.reasoning_content is not None
# enable thinking, streaming
reasoning_max_tokens = 3
response = openai_client.chat.completions.create(
@@ -642,3 +657,50 @@ def test_profile_reset_block_num():
f"Reset total_block_num {actual_value} 与 baseline {baseline} diff需要在5%以内"
f"Allowed range: [{lower_bound:.1f}, {upper_bound:.1f}]"
)
def test_thinking_logic_flag(openai_client, capsys):
"""
Test the interaction between token calculation logic and conditional thinking.
This test covers:
1. Default max_tokens calculation when not provided.
2. Capping of max_tokens when it exceeds model limits.
3. Default reasoning_max_tokens calculation when not provided.
4. Activation of thinking based on the final state of reasoning_max_tokens.
"""
response_case_1 = openai_client.chat.completions.create(
model="default",
messages=[{"role": "user", "content": "Explain gravity briefly."}],
temperature=1,
stream=False,
extra_body={
"chat_template_kwargs": {"enable_thinking": True},
},
)
assert response_case_1.choices[0].message.reasoning_content is not None
response_case_2 = openai_client.chat.completions.create(
model="default",
messages=[{"role": "user", "content": "Explain gravity in a way that a five-year-old child can understand."}],
temperature=1,
stream=False,
max_tokens=20,
extra_body={
"chat_template_kwargs": {"enable_thinking": True},
"reasoning_max_tokens": 5,
},
)
assert response_case_2.choices[0].message.reasoning_content is not None
response_case_3 = openai_client.chat.completions.create(
model="default",
messages=[{"role": "user", "content": "Explain gravity in a way that a five-year-old child can understand."}],
temperature=1,
stream=False,
max_tokens=20,
extra_body={
"chat_template_kwargs": {"enable_thinking": False},
},
)
assert response_case_3.choices[0].message.reasoning_content is None