[V1][LoRA][Test] V1 Engine LoRA support & e2e test (#893)

### What this PR does / why we need it?

Add V1Engine LoRA support.
Add LoRA e2e test on single card and multiple cards.

### Does this PR introduce _any_ user-facing change?
support lora for V1

### How was this patch tested?

CI passed with new added test

---------

Signed-off-by: jesse <szxfml@gmail.com>
Signed-off-by: paulyu <paulyu0307@gmail.com>
Signed-off-by: paulyu12 <507435917@qq.com>
Co-authored-by: jesse <szxfml@gmail.com>
Co-authored-by: paulyu <paulyu0307@gmail.com>

.github/workflows/vllm_ascend_test.yaml

@@ -112,10 +112,12 @@ jobs:
         run: |
           if [[ "${{ matrix.os }}" == "linux-arm64-npu-1" ]]; then
             pytest -sv tests/singlecard/test_offline_inference.py
+            pytest -sv tests/singlecard/test_ilama_lora.py
             pytest -sv tests/ops
             pytest -sv tests/compile
           else
             pytest -sv -k "QwQ" tests/multicard/test_offline_inference_distributed.py
+            pytest -sv tests/multicard/test_ilama_lora_tp2.py
             pytest -sv tests/ops
             pytest -sv tests/compile
           fi
@@ -125,9 +127,11 @@ jobs:
           VLLM_USE_V1: 0
         run: |
           if [[ "${{ matrix.os }}" == "linux-arm64-npu-1" ]]; then
+            pytest -sv tests/singlecard/test_ilama_lora.py
             pytest -sv tests/singlecard/test_offline_inference.py
             pytest -sv tests/ops
           else
+            pytest -sv tests/multicard/test_ilama_lora_tp2.py
             pytest -sv -k "QwQ" tests/multicard/test_offline_inference_distributed.py
             pytest -sv -k "DeepSeek" tests/multicard/test_offline_inference_distributed.py
             pytest -sv tests/ops

tests/conftest.py

@@ -23,6 +23,7 @@ from typing import List, Optional, Tuple, TypeVar, Union
 import numpy as np
 import pytest
 import torch
+from huggingface_hub import snapshot_download
 from PIL import Image
 from vllm import LLM, SamplingParams
 from vllm.config import TaskOption
@@ -349,3 +350,8 @@ def vllm_runner():
 @pytest.fixture(params=list(PROMPT_TEMPLATES.keys()))
 def prompt_template(request):
     return PROMPT_TEMPLATES[request.param]
+
+
+@pytest.fixture(scope="session")
+def ilama_lora_files():
+    return snapshot_download(repo_id="jeeejeee/ilama-text2sql-spider")

tests/multicard/test_ilama_lora_tp2.py

@@ -0,0 +1,21 @@
+import pytest
+
+from tests.conftest import VllmRunner
+from tests.singlecard.test_ilama_lora import (EXPECTED_LORA_OUTPUT, MODEL_PATH,
+                                              do_sample)
+
+
+@pytest.mark.parametrize("distributed_executor_backend", ["mp"])
+def test_ilama_lora_tp2(distributed_executor_backend, ilama_lora_files):
+    with VllmRunner(model_name=MODEL_PATH,
+                    enable_lora=True,
+                    max_loras=4,
+                    max_model_len=1024,
+                    max_num_seqs=16,
+                    tensor_parallel_size=2,
+                    distributed_executor_backend=distributed_executor_backend
+                    ) as vllm_model:
+        output = do_sample(vllm_model.model, ilama_lora_files, lora_id=2)
+
+    for i in range(len(EXPECTED_LORA_OUTPUT)):
+        assert output[i] == EXPECTED_LORA_OUTPUT[i]

tests/singlecard/test_ilama_lora.py

@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: Apache-2.0
+
+import vllm
+from vllm.lora.request import LoRARequest
+
+from tests.conftest import VllmRunner
+
+MODEL_PATH = "ArthurZ/ilama-3.2-1B"
+
+PROMPT_TEMPLATE = """I want you to act as a SQL terminal in front of an example database, you need only to return the sql command to me.Below is an instruction that describes a task, Write a response that appropriately completes the request.\n"\n##Instruction:\nconcert_singer contains tables such as stadium, singer, concert, singer_in_concert. Table stadium has columns such as Stadium_ID, Location, Name, Capacity, Highest, Lowest, Average. Stadium_ID is the primary key.\nTable singer has columns such as Singer_ID, Name, Country, Song_Name, Song_release_year, Age, Is_male. Singer_ID is the primary key.\nTable concert has columns such as concert_ID, concert_Name, Theme, Stadium_ID, Year. concert_ID is the primary key.\nTable singer_in_concert has columns such as concert_ID, Singer_ID. concert_ID is the primary key.\nThe Stadium_ID of concert is the foreign key of Stadium_ID of stadium.\nThe Singer_ID of singer_in_concert is the foreign key of Singer_ID of singer.\nThe concert_ID of singer_in_concert is the foreign key of concert_ID of concert.\n\n###Input:\n{query}\n\n###Response:"""  # noqa: E501
+
+EXPECTED_LORA_OUTPUT = [
+    "SELECT count(*) FROM singer",
+    "SELECT avg(age) ,  min(age) ,  max(age) FROM singer WHERE country  =  'France'",  # noqa: E501
+    "SELECT DISTINCT Country FROM singer WHERE Age  >  20",
+]
+
+
+def do_sample(llm: vllm.LLM, lora_path: str, lora_id: int) -> list[str]:
+    prompts = [
+        PROMPT_TEMPLATE.format(query="How many singers do we have?"),
+        PROMPT_TEMPLATE.format(
+            query=
+            "What is the average, minimum, and maximum age of all singers from France?"  # noqa: E501
+        ),
+        PROMPT_TEMPLATE.format(
+            query=
+            "What are all distinct countries where singers above age 20 are from?"  # noqa: E501
+        ),
+    ]
+    sampling_params = vllm.SamplingParams(temperature=0, max_tokens=32)
+    outputs = llm.generate(
+        prompts,
+        sampling_params,
+        lora_request=LoRARequest(str(lora_id), lora_id, lora_path)
+        if lora_id else None)
+    # Print the outputs.
+    generated_texts: list[str] = []
+    for output in outputs:
+        prompt = output.prompt
+        generated_text = output.outputs[0].text.strip()
+        generated_texts.append(generated_text)
+        print(f"Prompt: {prompt!r}, Generated text: {generated_text!r}")
+    return generated_texts
+
+
+def test_ilama_lora(ilama_lora_files):
+    with VllmRunner(model_name=MODEL_PATH,
+                    enable_lora=True,
+                    max_loras=4,
+                    max_model_len=1024,
+                    max_num_seqs=16) as vllm_model:
+
+        output1 = do_sample(vllm_model.model, ilama_lora_files, lora_id=1)
+        for i in range(len(EXPECTED_LORA_OUTPUT)):
+            assert output1[i] == EXPECTED_LORA_OUTPUT[i]
+
+        output2 = do_sample(vllm_model.model, ilama_lora_files, lora_id=2)
+        for i in range(len(EXPECTED_LORA_OUTPUT)):
+            assert output2[i] == EXPECTED_LORA_OUTPUT[i]

vllm_ascend/worker/model_runner_v1.py

@@ -50,6 +50,7 @@ from vllm.v1.outputs import EMPTY_MODEL_RUNNER_OUTPUT, ModelRunnerOutput
 from vllm.v1.sample.sampler import Sampler
 from vllm.v1.utils import bind_kv_cache
 from vllm.v1.worker.gpu_input_batch import CachedRequestState, InputBatch
+from vllm.v1.worker.lora_model_runner_mixin import LoRAModelRunnerMixin
 
 from vllm_ascend.attention.attention import AttentionMaskBuilder
 from vllm_ascend.attention.attention_v1 import AscendAttentionState
@@ -102,7 +103,7 @@ def graph_capture(device: torch.device):
         yield graph_capture_context
 
 
-class NPUModelRunner:
+class NPUModelRunner(LoRAModelRunnerMixin):
 
     def __init__(self, vllm_config: VllmConfig, device: torch.device):
         self.vllm_config = vllm_config
@@ -543,6 +544,10 @@ class NPUModelRunner:
             max_num_scheduled_tokens = max(max_num_scheduled_tokens,
                                            num_tokens)
 
+        # Hot-Swap lora model
+        if self.lora_config:
+            self.set_active_loras(self.input_batch, num_scheduled_tokens)
+
         # Prepare positions
         req_indices = np.repeat(self.arange_np[:num_reqs],
                                 num_scheduled_tokens)
@@ -867,6 +872,21 @@ class NPUModelRunner:
 
     @torch.inference_mode()
     def _dummy_run(self, num_tokens: int) -> torch.Tensor:
+        # Set num_scheduled_tokens based on num_tokens and max_num_seqs
+        # for dummy run with LoRA so that the num_reqs collectively
+        # has num_tokens in total.
+        assert num_tokens <= self.scheduler_config.max_num_batched_tokens
+        max_num_reqs = self.scheduler_config.max_num_seqs
+        num_reqs = max_num_reqs if num_tokens >= max_num_reqs else num_tokens
+        min_tokens_per_req = num_tokens // num_reqs
+        num_scheduled_tokens_list = [min_tokens_per_req] * num_reqs
+        num_scheduled_tokens_list[-1] += num_tokens % num_reqs
+        assert sum(num_scheduled_tokens_list) == num_tokens
+        assert len(num_scheduled_tokens_list) == num_reqs
+        num_scheduled_tokens = np.array(num_scheduled_tokens_list,
+                                        dtype=np.int32)
+        with self.maybe_dummy_run_with_lora(self.lora_config,
+                                            num_scheduled_tokens):
             model = self.model
             if self.is_multimodal_model:
                 input_ids = None
@@ -895,7 +915,8 @@ class NPUModelRunner:
                 })
 
             with set_forward_context(None, self.vllm_config):
-            hidden_states = model(input_ids=input_ids,
+                hidden_states = model(
+                    input_ids=input_ids,
                     positions=positions,
                     intermediate_tensors=intermediate_tensors,
                     inputs_embeds=inputs_embeds)
@@ -948,7 +969,11 @@ class NPUModelRunner:
         with DeviceMemoryProfiler() as m:  # noqa: SIM117
             self.model = get_model(vllm_config=self.vllm_config)
             if self.lora_config:
-                raise ValueError("LoRA model is not supported on NPU now.")
+                self.model = self.load_lora_model(self.model,
+                                                  self.model_config,
+                                                  self.scheduler_config,
+                                                  self.lora_config,
+                                                  self.device)
         logger.info("Loading model weights took %.4f GB",
                     m.consumed_memory / float(2**30))
 

vllm_ascend/worker/worker_v1.py

@@ -31,6 +31,7 @@ from vllm.distributed import (ensure_model_parallel_initialized,
                               set_custom_all_reduce)
 from vllm.distributed.kv_transfer import ensure_kv_transfer_initialized
 from vllm.logger import logger
+from vllm.lora.request import LoRARequest
 from vllm.model_executor import set_random_seed
 from vllm.utils import STR_DTYPE_TO_TORCH_DTYPE
 from vllm.v1.core.sched.output import SchedulerOutput
@@ -216,6 +217,18 @@ class NPUWorker(WorkerBase):
         else:
             self.profiler.stop()
 
+    def add_lora(self, lora_request: LoRARequest) -> bool:
+        return self.model_runner.add_lora(lora_request)
+
+    def remove_lora(self, lora_id: int) -> bool:
+        return self.model_runner.remove_lora(lora_id)
+
+    def list_loras(self) -> set[int]:
+        return self.model_runner.list_loras()
+
+    def pin_lora(self, lora_id: int) -> bool:
+        return self.model_runner.pin_lora(lora_id)
+
     def execute_dummy_batch(self) -> None:
         self.model_runner._dummy_run(1)