Files

Gahow Wang 445e491123 Add vLLM v0.18.1 source tree with KV transfer abort fix

third_party/vllm/ now tracked in git for direct patch management.
Based on vLLM v0.18.1 release with one patch applied:

  vllm/v1/core/sched/scheduler.py:
    Replace fatal assert with graceful skip when KV transfer callback
    arrives for an already-aborted request during PD disaggregated serving.

Future vLLM modifications should be made directly in third_party/vllm/
and committed normally. The patches/ directory is kept as documentation
of what changed from upstream.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-05-22 00:30:38 +08:00

780 B

Raw Blame History

LangChain

vLLM is also available via LangChain .

To install LangChain, run

pip install langchain langchain_community -q

To run inference on a single or multiple GPUs, use VLLM class from langchain.

??? code

```python
from langchain_community.llms import VLLM

llm = VLLM(
    model="Qwen/Qwen3-4B",
    trust_remote_code=True,  # mandatory for hf models
    max_new_tokens=128,
    top_k=10,
    top_p=0.95,
    temperature=0.8,
    # for distributed inference
    # tensor_parallel_size=...,
)

print(llm("What is the capital of France ?"))
```

Please refer to this Tutorial for more details.

780 B Raw Blame History

LangChain

780 B

Raw Blame History