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vllm-omni/examples/offline_inference/minimax_h3/dlo_lifecycle.py
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# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
"""Validate MiniMax-H3 request-mode and DLO lifecycle behavior.
The DLO modes accept any positive data-parallel size. With AllGather enabled,
the script submits one complete DP wave and verifies recovery after an invalid
wave. It also checks that every mode shuts down all worker processes cleanly.
Examples:
VLLM_WORKER_MULTIPROC_METHOD=spawn \
VLLM_OMNI_VIDEO_SYNC_TIMEOUT=14400 \
VLLM_OMNI_DLO_DP_WAVE_TIMEOUT=600 \
CUDA_VISIBLE_DEVICES=0,1,2,3 \
python examples/offline_inference/minimax_h3/dlo_lifecycle.py \
--model /path/to/MiniMax-H3/FL2VA --mode dlo --dp-size 4
# Rank-local mmap storage, with no DLO collective or DP wave scheduling.
VLLM_WORKER_MULTIPROC_METHOD=spawn \
VLLM_OMNI_VIDEO_SYNC_TIMEOUT=14400 \
CUDA_VISIBLE_DEVICES=0,1 \
python examples/offline_inference/minimax_h3/dlo_lifecycle.py \
--model /path/to/MiniMax-H3/FL2VA --mode dlo-no-allgather --dp-size 2
VLLM_WORKER_MULTIPROC_METHOD=spawn \
VLLM_OMNI_VIDEO_SYNC_TIMEOUT=14400 \
CUDA_VISIBLE_DEVICES=0,1 \
python examples/offline_inference/minimax_h3/dlo_lifecycle.py \
--model /path/to/MiniMax-H3/FL2VA --mode request --tp-size 2
"""
from __future__ import annotations
import argparse
import asyncio
import copy
import json
import multiprocessing
import time
from pathlib import Path
from typing import Any
import numpy as np
from vllm_omni.entrypoints.async_omni import AsyncOmni
DEFAULT_PROMPTS = (
"At night, three cats march into a bedroom playing tiny brass instruments, "
"then abruptly file out, with synchronized room ambience.",
"A paper boat crosses a rain-filled street while distant traffic and water sounds remain synchronized.",
)
def positive_int(value: str) -> int:
parsed = int(value)
if parsed < 1:
raise argparse.ArgumentTypeError("must be a positive integer")
return parsed
def parse_args() -> argparse.Namespace:
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--model", required=True, help="Path to MiniMax-H3/FL2VA")
parser.add_argument(
"--mode",
choices=("dlo", "dlo-no-allgather", "request"),
required=True,
help="DLO (with or without AllGather) or ordinary non-DLO request mode",
)
parser.add_argument(
"--dp-size",
type=positive_int,
default=2,
help="DLO data-parallel size (for example 1, 2, 4, or 8; default: 2)",
)
parser.add_argument(
"--tp-size",
type=positive_int,
default=2,
help="Tensor-parallel size used only by request mode (default: 2)",
)
parser.add_argument("--steps", type=int, default=2)
parser.add_argument("--duration", type=float, default=5.0)
parser.add_argument("--width", type=int, default=1344)
parser.add_argument("--height", type=int, default=768)
parser.add_argument("--batch-wait-ms", type=float, default=500.0)
parser.add_argument("--init-timeout", type=float, default=1800.0)
parser.add_argument("--output", type=Path)
return parser.parse_args()
def engine_kwargs(args: argparse.Namespace) -> dict[str, Any]:
is_dlo = args.mode in {"dlo", "dlo-no-allgather"}
common: dict[str, Any] = {
"model": args.model,
"trust_remote_code": True,
"num_gpus": args.dp_size if is_dlo else args.tp_size,
"usp": 1,
"ring": 1,
"vae_parallel_mode": "tile",
"vae_use_tiling": True,
"diffusion_attention_backend": "CUDNN_ATTN",
"request_batch_max_wait_ms": args.batch_wait_ms,
"enforce_eager": True,
"stage_init_timeout": args.init_timeout,
"init_timeout": args.init_timeout,
}
if is_dlo:
common.update(
tensor_parallel_size=1,
data_parallel_size=args.dp_size,
text_encoder_tp_size=1,
vae_patch_parallel_size=1,
enable_distributed_layerwise_offload=True,
dlo_use_allgather=args.mode == "dlo",
dlo_resident_layers=0,
)
else:
common.update(
tensor_parallel_size=args.tp_size,
data_parallel_size=1,
text_encoder_tp_size=args.tp_size,
vae_patch_parallel_size=args.tp_size,
)
return common
def sampling_params(
engine: AsyncOmni,
args: argparse.Namespace,
seed: int,
) -> list[Any]:
params = copy.deepcopy(engine.default_sampling_params_list)
diffusion = params[0]
diffusion.width = args.width
diffusion.height = args.height
diffusion.fps = 24
diffusion.num_inference_steps = args.steps
diffusion.seed = seed
diffusion.extra_args = {
"task": "t2va",
"duration": args.duration,
"aspect_ratio": "16:9",
"flow_shift": 12.0,
"audio_flow_shift": 3.0,
}
return params
async def generate_one(
engine: AsyncOmni,
args: argparse.Namespace,
*,
request_id: str,
prompt: str,
seed: int,
) -> Any:
final_output = None
async for output in engine.generate(
prompt=prompt,
request_id=request_id,
sampling_params_list=sampling_params(engine, args, seed),
):
if output.finished:
final_output = output
if final_output is None:
raise RuntimeError(f"{request_id} finished without an output")
return final_output
def output_summary(output: Any, args: argparse.Namespace) -> dict[str, Any]:
if not output.images:
raise RuntimeError(f"{output.request_id} returned no video")
frames = np.asarray(output.images[0])
audio = np.asarray(output.multimodal_output.get("audio"))
if frames.ndim != 4 or tuple(frames.shape[1:]) != (
args.height,
args.width,
3,
):
raise RuntimeError(f"{output.request_id} returned invalid video shape {tuple(frames.shape)}")
if audio.ndim != 3 or tuple(audio.shape[:2]) != (1, 2):
raise RuntimeError(f"{output.request_id} returned invalid audio shape {tuple(audio.shape)}")
if args.duration == 5.0 and args.height == 768 and args.width == 1344:
if tuple(frames.shape) != (124, 768, 1344, 3) or tuple(audio.shape) != (1, 2, 165600):
raise RuntimeError(
f"{output.request_id} default shape mismatch: video={tuple(frames.shape)}, audio={tuple(audio.shape)}"
)
return {
"request_id": output.request_id,
"frames_shape": list(frames.shape),
"audio_shape": list(audio.shape),
"peak_memory_mb": output.peak_memory_mb,
"stage_durations": output.stage_durations,
}
async def run(args: argparse.Namespace) -> dict[str, Any]:
engine = AsyncOmni(**engine_kwargs(args))
summary: dict[str, Any] = {
"mode": args.mode,
"engine_kwargs": engine_kwargs(args),
}
try:
uses_dp_wave = args.mode == "dlo" and args.dp_size > 1
if uses_dp_wave:
started = time.perf_counter()
asymmetric = await asyncio.gather(
generate_one(
engine,
args,
request_id="invalid-empty",
prompt="",
seed=1001,
),
*(
generate_one(
engine,
args,
request_id=f"invalid-peer-{index}",
prompt=DEFAULT_PROMPTS[index % len(DEFAULT_PROMPTS)],
seed=1001 + index,
)
for index in range(1, args.dp_size)
),
return_exceptions=True,
)
summary["asymmetric_wave_s"] = time.perf_counter() - started
summary["asymmetric_errors"] = [
f"{type(result).__name__}: {result}" for result in asymmetric if isinstance(result, BaseException)
]
if len(summary["asymmetric_errors"]) != args.dp_size:
raise RuntimeError("Every request in the asymmetric DP wave must fail before dispatch")
started = time.perf_counter()
request_count = args.dp_size if uses_dp_wave else 1
outputs = await asyncio.gather(
*(
generate_one(
engine,
args,
request_id=f"recovery-{index}",
prompt=DEFAULT_PROMPTS[index % len(DEFAULT_PROMPTS)],
seed=2000 + index,
)
for index in range(request_count)
)
)
summary["valid_wave_s"] = time.perf_counter() - started
summary["outputs"] = [output_summary(output, args) for output in outputs]
finally:
started = time.perf_counter()
engine.close()
summary["shutdown_s"] = time.perf_counter() - started
children = multiprocessing.active_children()
summary["active_children"] = [{"name": child.name, "pid": child.pid} for child in children]
if children:
raise RuntimeError(f"Worker processes remain after shutdown: {children}")
return summary
def main() -> None:
args = parse_args()
summary = asyncio.run(run(args))
rendered = json.dumps(summary, indent=2, sort_keys=True)
print(f"E2E_RESULT {rendered}", flush=True)
if args.output is not None:
args.output.parent.mkdir(parents=True, exist_ok=True)
args.output.write_text(rendered + "\n", encoding="utf-8")
if __name__ == "__main__":
main()