Files
xc-llm-ascend/examples/disaggregated_prefill_v1/gen_ranktable.py
wangxiyuan 36e450eb0f [Misc] Nit fix for disaggregated_prefill and ascend_forward_context (#2097)
we recently added disaggregated_prefill and ascend_forward_context
feature by
ba3dfbd59e
and
df0ec55162.
This PR fix some nit introduced by them to make the code clear.
1. drop `current_platform` usage. It'll lead unknown circular import
error in some case
2. update `set_ascend_forward_context` function to make the logic clear.
for example, remove V0 support in this function.
3. Remove useless `self.local_rank_across_dp` in worker
4. Remove `soc_info.py` to use `get_ascend_soc_version` instead.
 

- vLLM version: v0.10.0
- vLLM main:
02f82fe438

Signed-off-by: wangxiyuan <wangxiyuan1007@gmail.com>
2025-08-05 08:39:02 +08:00

123 lines
4.3 KiB
Python

import argparse
import json
import os
import torch.distributed as dist
from vllm_ascend.utils import AscendSocVersion, init_ascend_soc_version, get_ascend_soc_version
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")
init_ascend_soc_version()
soc_info = get_ascend_soc_version()
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 == AscendSocVersion.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 == AscendSocVersion.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")