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Tiny refactor ModelConfig.from_server_args #5219

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May 8, 2025
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11 changes: 1 addition & 10 deletions python/sglang/bench_one_batch.py
Original file line number Diff line number Diff line change
Expand Up @@ -129,16 +129,7 @@ def load_model(server_args, port_args, tp_rank):
suppress_other_loggers()
rank_print = print if tp_rank == 0 else lambda *args, **kwargs: None

model_config = ModelConfig(
server_args.model_path,
trust_remote_code=server_args.trust_remote_code,
revision=server_args.revision,
context_length=server_args.context_length,
model_override_args=server_args.json_model_override_args,
is_embedding=server_args.is_embedding,
dtype=server_args.dtype,
quantization=server_args.quantization,
)
model_config = ModelConfig.from_server_args(server_args)
model_runner = ModelRunner(
model_config=model_config,
mem_fraction_static=server_args.mem_fraction_static,
Expand Down
14 changes: 14 additions & 0 deletions python/sglang/srt/configs/model_config.py
Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@

from sglang.srt.hf_transformers_utils import get_config, get_context_length
from sglang.srt.layers.quantization import QUANTIZATION_METHODS
from sglang.srt.server_args import ServerArgs
from sglang.srt.utils import get_bool_env_var, is_hip

logger = logging.getLogger(__name__)
Expand Down Expand Up @@ -171,6 +172,19 @@ def __init__(
self.hf_eos_token_id = self.get_hf_eos_token_id()
self.image_token_id = getattr(self.hf_config, "image_token_id", None)

@staticmethod
def from_server_args(server_args: ServerArgs, model_path: str = None):
return ModelConfig(
model_path=model_path or server_args.model_path,
trust_remote_code=server_args.trust_remote_code,
revision=server_args.revision,
context_length=server_args.context_length,
model_override_args=server_args.json_model_override_args,
is_embedding=server_args.is_embedding,
dtype=server_args.dtype,
quantization=server_args.quantization,
)

# adapted from https://github.com/vllm-project/vllm/blob/main/vllm/config.py#L289
def get_total_num_kv_heads(self) -> int:
"""Returns the total number of KV heads."""
Expand Down
11 changes: 1 addition & 10 deletions python/sglang/srt/managers/scheduler.py
Original file line number Diff line number Diff line change
Expand Up @@ -430,16 +430,7 @@ def __init__(
def init_tokenizer(self):
server_args = self.server_args

self.model_config = ModelConfig(
server_args.model_path,
trust_remote_code=server_args.trust_remote_code,
revision=server_args.revision,
context_length=server_args.context_length,
model_override_args=server_args.json_model_override_args,
is_embedding=server_args.is_embedding,
dtype=server_args.dtype,
quantization=server_args.quantization,
)
self.model_config = ModelConfig.from_server_args(server_args)
self.is_generation = self.model_config.is_generation

if server_args.skip_tokenizer_init:
Expand Down
11 changes: 1 addition & 10 deletions python/sglang/srt/managers/tokenizer_manager.py
Original file line number Diff line number Diff line change
Expand Up @@ -156,16 +156,7 @@ def __init__(
# Read model args
self.model_path = server_args.model_path
self.served_model_name = server_args.served_model_name
self.model_config = ModelConfig(
server_args.model_path,
trust_remote_code=server_args.trust_remote_code,
revision=server_args.revision,
context_length=server_args.context_length,
model_override_args=server_args.json_model_override_args,
is_embedding=server_args.is_embedding,
dtype=server_args.dtype,
quantization=server_args.quantization,
)
self.model_config = ModelConfig.from_server_args(server_args)

self.is_generation = self.model_config.is_generation
self.is_image_gen = self.model_config.is_image_gen
Expand Down
12 changes: 3 additions & 9 deletions python/sglang/srt/managers/tp_worker.py
Original file line number Diff line number Diff line change
Expand Up @@ -57,19 +57,13 @@ def __init__(
self.tp_rank = tp_rank

# Init model and tokenizer
self.model_config = ModelConfig(
(
self.model_config = ModelConfig.from_server_args(
server_args,
model_path=(
server_args.model_path
if not is_draft_worker
else server_args.speculative_draft_model_path
),
trust_remote_code=server_args.trust_remote_code,
revision=server_args.revision,
context_length=server_args.context_length,
model_override_args=server_args.json_model_override_args,
is_embedding=server_args.is_embedding,
dtype=server_args.dtype,
quantization=server_args.quantization,
)
self.model_runner = ModelRunner(
model_config=self.model_config,
Expand Down
11 changes: 1 addition & 10 deletions test/srt/test_gptqmodel_dynamic.py
Original file line number Diff line number Diff line change
Expand Up @@ -43,16 +43,7 @@ def check_quant_method(model_path: str, use_marlin_kernel: bool):
pass

server_args = ServerArgs(model_path=model_path, dtype=torch.float16)
model_config = ModelConfig(
server_args.model_path,
trust_remote_code=server_args.trust_remote_code,
revision=server_args.revision,
context_length=server_args.context_length,
model_override_args=server_args.json_model_override_args,
is_embedding=server_args.is_embedding,
dtype=server_args.dtype,
quantization=server_args.quantization,
)
model_config = ModelConfig.from_server_args(server_args)

load_config = LoadConfig()
device_config = DeviceConfig("cuda")
Expand Down
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