#!/usr/bin/env python3
"""Run a deterministic shard of the frozen convolutional-HFA short screen."""
import argparse
import os
import subprocess
import sys


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument("--device", default="cuda")
    parser.add_argument("--shard_index", type=int, default=0)
    parser.add_argument("--num_shards", type=int, default=1)
    parser.add_argument("--dry_run", action="store_true")
    args = parser.parse_args()
    if not 0 <= args.shard_index < args.num_shards:
        raise ValueError("invalid shard index")

    common = [
        sys.executable, "experiments/conv_run.py", "--mode", "hfa",
        "--device", args.device, "--depth", "20", "--width", "16",
        "--seed", "0", "--loader_seed", "0", "--batch_size", "128",
        "--epochs", "20", "--train_limit", "10000",
        "--val_examples", "5000", "--split_seed", "2027",
        "--eval_split", "validation", "--eval_every", "0",
        "--augment_train", "1", "--lr_schedule", "cosine",
        "--warmup_epochs", "0", "--momentum", "0.9",
        "--weight_decay", "1e-4", "--normalization", "batchnorm",
        "--output_lr", "0.1", "--a_scale", "1",
        "--alignment_probe", "32",
    ]
    jobs = []
    for rate in (0.01, 0.03, 0.1):
        tag = f"hfa_lr{rate}"
        jobs.append((tag, common + [
            "--lr", str(rate),
            "--out", f"results/oral_a_hfa_short/{tag}.json",
        ]))

    os.makedirs("results/oral_a_hfa_short", exist_ok=True)
    selected = [job for index, job in enumerate(jobs)
                if index % args.num_shards == args.shard_index]
    for tag, command in selected:
        print(tag, " ".join(command), flush=True)
        if not args.dry_run:
            subprocess.run(command, check=True)


if __name__ == "__main__":
    main()