Disaggregate prefill for kv cache register style （merge into v0.9.1-dev）

.github/workflows/vllm_ascend_test_pd.yaml

@@ -103,3 +103,7 @@ jobs:
       - name: Run vllm-project/vllm-ascend PD Disaggregation test
         run: |
           pytest -sv tests/e2e/pd_disaggreate/test_pd_e2e.py
+
+      - name: Run vllm-project/vllm-ascend PD Disaggregation edge test
+        run: |
+          bash tests/e2e/pd_disaggreate/run_edge_case_test.sh

examples/disaggregate_prefill_v1/README.md

@@ -0,0 +1,234 @@
+# Disaggregated Prefill-Decode Deployment Guide
+
+## Overview
+This demo document provides instructions for running a disaggregated vLLM-ascend service with separate prefill and decode stages across 4 nodes, uses 16 Ascend NPUs for two prefill nodes (P1/P2) and 16 Ascend NPUS for two decode nodes (D1/D2).
+
+## Prerequisites
+- Ascend NPU environment with vLLM 0.9.1 installed
+- Network interfaces configured for distributed communication (eg: eth0)
+- Model weights located at `/data01/deepseek_r1_w8a8_zhw`
+
+## Rank table generation
+The rank table is a JSON file that specifies the mapping of Ascend NPU ranks to nodes. The following command generates a rank table for all nodes with 16 cards prefill and 16 cards decode:
+
+Run the following command on every node to generate the rank table:
+```shell
+cd vllm-ascend/examples/disaggregate_prefill_v1/
+bash gen_ranktable.sh --ips 172.19.32.175 172.19.241.49 172.19.123.51 172.19.190.36 \
+  --npus-per-node 8 --network-card-name enp189s0f0 --prefill-device-cnt 16 --decode-device-cnt 16
+```
+Rank table will generated at `/vllm-workspace/vllm-ascend/examples/disaggregate_prefill_v1/ranktable.json`
+
+## Start disaggregated vLLM-ascend service 
+Execution Sequence
+- 4 configured node ip are: 172.19.32.175 172.19.241.49 172.19.123.51 172.19.190.36
+- Start Prefill on Node 1 (P1)
+- Start Prefill on Node 2 (P2)
+- Start Decode on Node 1 (D1)
+- Start Decode on Node 2 (D2)
+- Start proxy server on Node1
+
+* Run prefill server P1 on first node
+```shell
+export HCCL_IF_IP=`hostname -I|awk -F " " '{print$1}'`
+export GLOO_SOCKET_IFNAME="eth0"
+export TP_SOCKET_IFNAME="eth0"
+export HCCL_SOCKET_IFNAME="eth0"
+export DISAGGREGATED_PREFILL_RANK_TABLE_PATH=/vllm-workspace/vllm-ascend/examples/disaggregate_prefill_v1/ranktable.json
+export OMP_PROC_BIND=false
+export OMP_NUM_THREADS=100
+export VLLM_USE_V1=1
+export VLLM_VERSION=0.9.1
+vllm serve /data01/deepseek_r1_w8a8_zhw \
+  --host 0.0.0.0 \
+  --port 20002 \
+  --data-parallel-size 2 \
+  --data-parallel-size-local 1 \
+  --api-server-count 2 \
+  --data-parallel-address 172.19.32.175 \
+  --data-parallel-rpc-port 13356 \
+  --tensor-parallel-size 8 \
+  --no-enable-prefix-caching \
+  --seed 1024 \
+  --served-model-name deepseek \
+  --max-model-len 6144  \
+  --max-num-batched-tokens 6144  \
+  --trust-remote-code \
+  --enforce-eager \
+  --gpu-memory-utilization 0.9  \
+  --kv-transfer-config  \
+  '{"kv_connector": "LLMDataDistCMgrConnector",
+  "kv_buffer_device": "npu",
+  "kv_role": "kv_producer",
+  "kv_parallel_size": 1,
+  "kv_port": "20001",
+  "engine_id": "0",
+  "kv_connector_module_path": "vllm_ascend.distributed.llmdatadist_c_mgr_connector"
+  }'  \
+  --additional-config \
+  '{"torchair_graph_config": {"enabled": false, "enable_multistream_shared_expert": false}, "expert_tensor_parallel_size": 1}'
+```
+
+* Run prefill server P2 on second node
+```shell
+export HCCL_IF_IP=`hostname -I|awk -F " " '{print$1}'`
+export GLOO_SOCKET_IFNAME="eth0"
+export TP_SOCKET_IFNAME="eth0"
+export HCCL_SOCKET_IFNAME="eth0"
+export DISAGGREGATED_PREFILL_RANK_TABLE_PATH=/vllm-workspace/vllm-ascend/examples/disaggregate_prefill_v1/ranktable.json
+export OMP_PROC_BIND=false
+export OMP_NUM_THREADS=100
+export VLLM_USE_V1=1
+export VLLM_VERSION=0.9.1
+vllm serve /data01/deepseek_r1_w8a8_zhw \
+  --host 0.0.0.0 \
+  --port 20002 \
+  --headless \
+  --data-parallel-size 2 \
+  --data-parallel-start-rank 1 \
+  --data-parallel-size-local 1 \
+  --data-parallel-address 172.19.32.175 \
+  --data-parallel-rpc-port 13356 \
+  --tensor-parallel-size 8 \
+  --no-enable-prefix-caching \
+  --seed 1024 \
+  --served-model-name deepseek \
+  --max-model-len 6144  \
+  --max-num-batched-tokens 6144  \
+  --trust-remote-code \
+  --enforce-eager \
+  --gpu-memory-utilization 0.9  \
+  --kv-transfer-config  \
+  '{"kv_connector": "LLMDataDistCMgrConnector",
+  "kv_buffer_device": "npu",
+  "kv_role": "kv_producer",
+  "kv_parallel_size": 1,
+  "kv_port": "20001",
+  "engine_id": "0",
+  "kv_connector_module_path": "vllm_ascend.distributed.llmdatadist_c_mgr_connector"
+  }'  \
+  --additional-config \
+  '{"torchair_graph_config": {"enabled": false, "enable_multistream_shared_expert": false}, "expert_tensor_parallel_size": 1}' 
+```
+
+* Run decode server d1 on third node
+```shell
+export HCCL_IF_IP=`hostname -I|awk -F " " '{print$1}'`
+export GLOO_SOCKET_IFNAME="eth0"
+export TP_SOCKET_IFNAME="eth0"
+export HCCL_SOCKET_IFNAME="eth0"
+export DISAGGREGATED_PREFILL_RANK_TABLE_PATH=/vllm-workspace/vllm-ascend/examples/disaggregate_prefill_v1/ranktable.json
+export OMP_PROC_BIND=false
+export OMP_NUM_THREADS=100
+export VLLM_USE_V1=1
+export VLLM_VERSION=0.9.1
+vllm serve /data01/deepseek_r1_w8a8_zhw \
+  --host 0.0.0.0 \
+  --port 20002 \
+  --data-parallel-size 2 \
+  --data-parallel-size-local 1 \
+  --api-server-count 2 \
+  --data-parallel-address 172.19.123.51 \
+  --data-parallel-rpc-port 13356 \
+  --tensor-parallel-size 8 \
+  --no-enable-prefix-caching \
+  --seed 1024 \
+  --served-model-name deepseek \
+  --max-model-len 6144  \
+  --max-num-batched-tokens 6144  \
+  --trust-remote-code \
+  --enforce-eager \
+  --gpu-memory-utilization 0.9  \
+  --kv-transfer-config  \
+  '{"kv_connector": "LLMDataDistCMgrConnector",
+  "kv_buffer_device": "npu",
+  "kv_role": "kv_consumer",
+  "kv_parallel_size": 1,
+  "kv_port": "20001",
+  "engine_id": "0",
+  "kv_connector_module_path": "vllm_ascend.distributed.llmdatadist_c_mgr_connector"
+  }'  \
+  --additional-config \
+  '{"torchair_graph_config": {"enabled": false, "enable_multistream_shared_expert": false}, "expert_tensor_parallel_size": 1}'
+```
+
+* Run decode server d2 on last node
+```shell
+export HCCL_IF_IP=`hostname -I|awk -F " " '{print$1}'`
+export GLOO_SOCKET_IFNAME="eth0"
+export TP_SOCKET_IFNAME="eth0"
+export HCCL_SOCKET_IFNAME="eth0"
+export DISAGGREGATED_PREFILL_RANK_TABLE_PATH=/vllm-workspace/vllm-ascend/examples/disaggregate_prefill_v1/ranktable.json
+export OMP_PROC_BIND=false
+export OMP_NUM_THREADS=100
+export VLLM_USE_V1=1
+export VLLM_VERSION=0.9.1
+vllm serve /data01/deepseek_r1_w8a8_zhw \
+  --host 0.0.0.0 \
+  --port 20002 \
+  --headless \
+  --data-parallel-size 2 \
+  --data-parallel-start-rank 1 \
+  --data-parallel-size-local 1 \
+  --data-parallel-address 172.19.123.51 \
+  --data-parallel-rpc-port 13356 \
+  --tensor-parallel-size 8 \
+  --no-enable-prefix-caching \
+  --seed 1024 \
+  --served-model-name deepseek \
+  --max-model-len 6144  \
+  --max-num-batched-tokens 6144  \
+  --trust-remote-code \
+  --enforce-eager \
+  --gpu-memory-utilization 0.9  \
+  --kv-transfer-config  \
+  '{"kv_connector": "LLMDataDistCMgrConnector",
+  "kv_buffer_device": "npu",
+  "kv_role": "kv_consumer",
+  "kv_parallel_size": 1,
+  "kv_port": "20001",
+  "engine_id": "0",
+  "kv_connector_module_path": "vllm_ascend.distributed.llmdatadist_c_mgr_connector"
+  }'  \
+  --additional-config \
+  '{"torchair_graph_config": {"enabled": false, "enable_multistream_shared_expert": false}, "expert_tensor_parallel_size": 1}' 
+```
+
+* Run proxy server on the first node
+```shell
+cd /vllm-workspace/vllm-ascend/examples/disaggregate_prefill_v1
+python toy_proxy_server.py --host 172.19.32.175 --port 1025 --prefiller-hosts 172.19.241.49 --prefiller-port 20002 --decoder-hosts 172.19.123.51 --decoder-ports 20002
+```
+
+* Verification
+Check service health using the proxy server endpoint:
+```shell
+curl http://localhost:1025/v1/completions \
+    -H "Content-Type: application/json" \
+    -d '{
+        "model": "deepseek",
+        "prompt": "Who are you?",
+        "max_tokens": 100,
+        "temperature": 0
+    }'
+```
+
+* Performance
+Test performance with vllm benchmark
+```shell
+cd /vllm-workspace/vllm/benchmarks
+python3 benchmark_serving.py \
+    --backend vllm \
+    --dataset-name random \
+    --random-input-len 4096 \
+    --random-output-len 1536 \
+    --num-prompts 256 \
+    --ignore-eos \
+    --model deepseek \
+    --tokenizer /data01/deepseek_r1_w8a8_zhw \
+    --host localhost \
+    --port 8000 \
+    --endpoint /v1/completions \
+    --max-concurrency 4 \
+    --request-rate 4
+```

examples/disaggregate_prefill_v1/gen_ranktable.py

@@ -0,0 +1,120 @@
+import argparse
+import json
+import os
+
+import torch.distributed as dist
+
+from vllm_ascend.soc_info import NPUSocInfo
+
+parser = argparse.ArgumentParser(
+    description="Arguments of rank table generator", )
+parser.add_argument("--local-host", type=str, required=True, help="local ip")
+parser.add_argument("--prefill-device-cnt",
+                    type=int,
+                    required=True,
+                    help="number of prefill devices")
+parser.add_argument("--decode-device-cnt",
+                    type=int,
+                    required=True,
+                    help="number of decode devices")
+args = parser.parse_args()
+local_host = args.local_host
+prefill_device_cnt = args.prefill_device_cnt
+decode_device_cnt = args.decode_device_cnt
+
+print("enter py")
+
+hccn_tool_path = os.environ.get("HCCN_TOOL_PATH",
+                                "/usr/local/Ascend/driver/tools/hccn_tool")
+master_addr = os.environ.get("MASTER_ADDR")
+master_port = os.environ.get("MASTER_PORT")
+rank = os.environ.get("RANK")
+local_rank = os.environ.get("LOCAL_RANK")
+# This variable is set by torchrun,
+# and is different from WORLD_SIZE in gen_rank_table.sh.
+world_size = os.environ.get("WORLD_SIZE")
+soc_info = NPUSocInfo()
+
+
+def get_cmd_stdout(cmd):
+    import subprocess
+    return subprocess.run(cmd, capture_output=True,
+                          shell=True).stdout.decode("utf-8").strip()
+
+
+print(f"local_host: {local_host}")
+print("gen ranktable.json")
+
+num_cards = get_cmd_stdout("npu-smi info -l | grep \"Total Count\"").split(
+    ":")[1].strip()
+num_cards = int(num_cards)
+chips_per_card = get_cmd_stdout("npu-smi info -l | grep \"Chip Count\"").split(
+    "\n")[0].split(":")[1].strip()
+chips_per_card = int(chips_per_card)
+
+# generate local device list for local rank 0, and gather it to all ranks
+local_device_list: list[dict[str, str]] = list()
+if local_rank == "0":
+    super_pod_id = "0"
+    for card_id in range(num_cards):
+        for chip_id in range(chips_per_card):
+            device_id = card_id * chips_per_card + chip_id
+            if soc_info.is_a3:
+                device_ip = get_cmd_stdout(
+                    f"{hccn_tool_path} -i {device_id} -vnic -g | grep ipaddr"
+                ).split(":")[1].strip()
+                super_device_id = get_cmd_stdout(
+                    f"npu-smi info -t spod-info -i {card_id} -c {chip_id} | grep SDID"
+                ).split(":")[1].strip()
+                super_pod_id = get_cmd_stdout(
+                    f"npu-smi info -t spod-info -i {card_id} -c {chip_id} | grep \"Super Pod ID\""
+                ).split(":")[1].strip()
+            else:
+                device_ip = get_cmd_stdout(
+                    f"{hccn_tool_path} -i {device_id} -ip -g | grep ipaddr"
+                ).split(":")[1].strip()
+
+            device_info = {
+                "server_id": local_host,
+                "device_id": str(device_id),
+                "device_ip": str(device_ip),
+            }
+            if soc_info.is_a3:
+                device_info.update({
+                    "super_pod_id": str(super_pod_id),
+                    "super_device_id": str(super_device_id)
+                })
+            local_device_list.append(device_info)
+
+dist.init_process_group(backend=dist.Backend.GLOO)
+global_device_list = [None] * dist.get_world_size()
+dist.all_gather_object(global_device_list, local_device_list)
+global_device_list = [
+    device_info for device_list in global_device_list
+    for device_info in device_list  # type: ignore[attr-defined]
+]
+cnt = 1
+for device_info in global_device_list:  # type: ignore[assignment]
+    device_info["cluster_id"] = str(cnt)
+    cnt += 1
+assert (prefill_device_cnt + decode_device_cnt) <= len(global_device_list), \
+"prefill_device_cnt + decode_device_cnt must be less than or equal to number of all devices in cluster"
+ranktable = {
+    "version":
+    "1.2",
+    "server_count":
+    str(world_size),
+    "prefill_device_list":
+    global_device_list[:prefill_device_cnt],
+    "decode_device_list":
+    global_device_list[prefill_device_cnt:prefill_device_cnt +
+                       decode_device_cnt],
+    "status":
+    "completed"
+}
+
+if local_rank == '0':
+    with open("ranktable.json", "w") as f:
+        json.dump(ranktable, f, indent=4)
+
+    print("gen ranktable.json done")