File size: 5,033 Bytes
8652b04 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 | #!/usr/bin/env python3
"""Run identical Lustify SDXL jobs concurrently on multiple GPUs."""
from __future__ import annotations
import argparse
import os
import subprocess
import sys
from pathlib import Path
ROOT = Path(__file__).resolve().parent
DEFAULT_SCRIPT = ROOT / "generate_lustify.py"
DEFAULT_PYTHON = Path(sys.executable)
def parse_args() -> tuple[argparse.Namespace, list[str]]:
parser = argparse.ArgumentParser(
description=(
"Launch one identical Lustify generation job per GPU. "
"Seeds are base_seed, base_seed-1, ..."
)
)
parser.add_argument("--gpus", required=True, help="Comma-separated physical GPU IDs, e.g. 4,5,6,7")
parser.add_argument("--seed", required=True, type=int, help="Seed for the first GPU")
parser.add_argument("--output", default="outputs/lustify.png", help="Base output path")
parser.add_argument("--log-dir", type=Path, default=ROOT / "logs")
parser.add_argument("--script", type=Path, default=DEFAULT_SCRIPT, help=argparse.SUPPRESS)
parser.add_argument("--python", type=Path, default=DEFAULT_PYTHON, help=argparse.SUPPRESS)
parser.add_argument("--dry-run", action="store_true", help="Show GPU/seed/output mapping without launching")
args, child_args = parser.parse_known_args()
return args, child_args
def parse_gpus(value: str) -> list[int]:
try:
gpus = [int(item.strip()) for item in value.split(",") if item.strip()]
except ValueError as error:
raise SystemExit("--gpus must be a comma-separated list of integer GPU IDs") from error
if not gpus:
raise SystemExit("--gpus must contain at least one GPU ID")
if len(set(gpus)) != len(gpus):
raise SystemExit("--gpus must not contain duplicate GPU IDs")
if any(gpu < 0 for gpu in gpus):
raise SystemExit("GPU IDs must be non-negative")
return gpus
def output_for(base: Path, seed: int) -> Path:
suffix = base.suffix or ".png"
return base.with_name(f"{base.stem}_seed{seed}{suffix}")
def terminate_all(processes: list[subprocess.Popen]) -> None:
for process in processes:
if process.poll() is None:
process.terminate()
for process in processes:
if process.poll() is None:
try:
process.wait(timeout=10)
except subprocess.TimeoutExpired:
process.kill()
def main() -> None:
args, child_args = parse_args()
gpus = parse_gpus(args.gpus)
if not args.script.is_file():
raise SystemExit(f"Generation script does not exist: {args.script}")
if not args.python.is_file():
raise SystemExit(f"Python interpreter does not exist: {args.python}")
if "--device" in child_args:
raise SystemExit("Do not pass --device; each physical GPU is mapped to cuda:0 automatically")
base_output = Path(args.output)
jobs = []
for index, gpu in enumerate(gpus):
seed = args.seed - index
output = output_for(base_output, seed)
log = args.log_dir / f"{base_output.stem}_gpu{gpu}_seed{seed}.log"
jobs.append((gpu, seed, output, log))
print(f"GPU {gpu}: seed={seed}, output={output}, log={log}")
if args.dry_run:
return
base_output.parent.mkdir(parents=True, exist_ok=True)
args.log_dir.mkdir(parents=True, exist_ok=True)
processes: list[subprocess.Popen] = []
exit_codes: list[int] = []
log_files = []
try:
for gpu, seed, output, log in jobs:
env = os.environ.copy()
env["CUDA_VISIBLE_DEVICES"] = str(gpu)
env.setdefault("TOKENIZERS_PARALLELISM", "false")
env.setdefault("PYTORCH_CUDA_ALLOC_CONF", "expandable_segments:True")
command = [
str(args.python),
str(args.script),
*child_args,
"--seed",
str(seed),
"--output",
str(output),
]
log_file = log.open("w", encoding="utf-8")
log_files.append(log_file)
processes.append(
subprocess.Popen(
command,
cwd=ROOT,
env=env,
stdout=log_file,
stderr=subprocess.STDOUT,
)
)
exit_codes = [process.wait() for process in processes]
except KeyboardInterrupt:
print("Interrupted; terminating all child processes", file=sys.stderr)
terminate_all(processes)
raise SystemExit(130)
finally:
for log_file in log_files:
log_file.close()
failures = [(*jobs[index][:2], code, jobs[index][3]) for index, code in enumerate(exit_codes) if code]
if failures:
for gpu, seed, code, log in failures:
print(f"FAILED GPU {gpu}, seed {seed}, exit={code}; see {log}", file=sys.stderr)
raise SystemExit(1)
print(f"Completed {len(jobs)} jobs successfully")
if __name__ == "__main__":
main()
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