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### What this PR does / why we need it? Change as little existing code as possible to add v1 pooling task's support, notice that i move down the `vllm.v1.worker.gpu_input_batch` to vllm-ascend, Considering the frequent changes in upstream interfaces, in order to decouple, so i move it here ### How was this patch tested? CI passed with new added/existing test, and I have a simple test was first conducted locally which is adapted from https://www.modelscope.cn/models/Qwen/Qwen3-Embedding-0.6B, just like bellow： ```python import os import torch from vllm import LLM os.environ["VLLM_USE_MODELSCOPE"]="True" def get_detailed_instruct(task_description: str, query: str) -> str: return f'Instruct: {task_description}\nQuery:{query}' # Each query must come with a one-sentence instruction that describes the task task = 'Given a web search query, retrieve relevant passages that answer the query' queries = [ get_detailed_instruct(task, 'What is the capital of China?'), get_detailed_instruct(task, 'Explain gravity') ] # No need to add instruction for retrieval documents documents = [ "The capital of China is Beijing.", "Gravity is a force that attracts two bodies towards each other. It gives weight to physical objects and is responsible for the movement of planets around the sun." ] input_texts = queries + documents model = LLM(model="Qwen/Qwen3-Embedding-0.6B", task="embed") outputs = model.embed(input_texts) embeddings = torch.tensor([o.outputs.embedding for o in outputs]) scores = (embeddings[:2] @ embeddings[2:].T) print(scores.tolist()) # [[0.7620252966880798, 0.14078938961029053], [0.1358368694782257, 0.6013815999031067]] ``` --------- Signed-off-by: wangli <wangli858794774@gmail.com> Signed-off-by: wangli <858794774@qq.com> Co-authored-by: wangli <858794774@qq.com>