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TrackCraft3R forecasting โ€” Isambard ํ•™์Šต ์ฒดํฌํฌ์ธํŠธ

Wan2.1-T2V-1.3B ๊ธฐ๋ฐ˜ TrackCraft3R ๋ฅผ 3D ๊ถค์  ์˜ˆ์ธก๊ธฐ๋กœ ๋ฐ”๊พผ flow ํ•™์Šต์˜ ์ „ ๋Ÿฐยท์ „ ์Šคํ…. ์ฝ”๋“œ: sheep1283/TrackCraft3R_forcasting (๋น„๊ณต๊ฐœ).

๊ตฌ์„ฑ

๊ฒฝ๋กœ ๋‚ด์šฉ ์šฉ๋„
full/<๋Ÿฐ>/flow_stepN.pt ๋Ÿฐ๋ณ„ ์ตœ์‹  ์Šคํ… ์›๋ณธ ๊ทธ๋Œ€๋กœ (์˜ตํ‹ฐ๋งˆ์ด์ € ํฌํ•จ, 3.17GB) ํ•™์Šต ์žฌ๊ฐœ
dedup/<๋Ÿฐ>/flow_stepN.safetensors ๋‚˜๋จธ์ง€ ์Šคํ…, ํ•™์Šต๋œ ํ…์„œ๋งŒ (0.18GB) ์ถ”๋ก ยทํ‰๊ฐ€

์™œ ์ค‘๋ณต ์ œ๊ฑฐ๊ฐ€ ์•ˆ์ „ํ•œ๊ฐ€

flow ํ•™์Šต๊ธฐ(scripts/train_forecast_flow_delta.py)๋Š” DiT ๋ฅผ ํ†ต์งธ๋กœ ๋™๊ฒฐํ•˜๊ณ  PlainLoRA ์˜ A/B, injector, mask_head ๋งŒ ์˜ตํ‹ฐ๋งˆ์ด์ €์— ๋„ฃ๋Š”๋‹ค. .pt ์˜ ๋‚˜๋จธ์ง€๋Š”:

  • base.base_layer.*, base.lora_*.default โ€” ๊ณต์‹ TrackCraft3R ๋ฆด๋ฆฌ์Šค model.safetensors ์™€ ๋ฐ”์ดํŠธ ๋™์ผ (3๊ฐœ ๋Ÿฐ ร— 960 ํ…์„œ ์ „์ˆ˜ ๋Œ€์กฐ, ๋ถˆ์ผ์น˜ 0)
  • base.lora_*.forecast โ€” PEFT ๊ฐ€ B ๋ฅผ 0 ์œผ๋กœ ์ดˆ๊ธฐํ™”ํ•˜๊ณ  ํ•™์Šต๊ธฐ๊ฐ€ ๋™๊ฒฐ. ์ˆœ์ „ํŒŒ ๊ธฐ์—ฌ๊ฐ€ ํ•ญ์ƒ 0 (720 ๋ชจ๋“ˆ ์ „๋ถ€ B=0 ํ™•์ธ)
  • opt โ€” ์˜ตํ‹ฐ๋งˆ์ด์ € ์ƒํƒœ. ์žฌ๊ฐœ์—๋งŒ ํ•„์š”

scripts/verify_dedup_cpu.py ๋กœ ํ™•์ธ: ์ƒˆ๋กœ ์ฃผ์ž…ํ•œ forecast_B 300/300 ๋ ˆ์ด์–ด๊ฐ€ 0, 240 ๋ชจ๋“ˆ ์ถœ๋ ฅ์ด ์›๋ณธ๊ณผ ๋น„ํŠธ ๋™์ผ.

dedup ํŒŒ์ผ ๋กœ๋“œ

from scripts.export_dedup_ckpt import load_dedup
lora, injector_sd, maskhead_sd, args, step = load_dedup("flow_stepN.safetensors")

# ํ‰์†Œ๋Œ€๋กœ ๊ณต์‹ ๋ฆด๋ฆฌ์Šค๋กœ ๋ชจ๋ธ์„ ๋งŒ๋“  ๋’ค
module = WanForecastTrainingModule(official_checkpoint_path=".../trackcraft3r/model.safetensors", ...)
wrap_attention_plain(module.pipe.dit, args["lora_rank"])
for nm, m in module.pipe.dit.named_modules():
    if isinstance(m, PlainLoRA):
        m.A.weight.data.copy_(lora[nm]["A.weight"]); m.B.weight.data.copy_(lora[nm]["B.weight"])
injector.load_state_dict(injector_sd)

args ์— ํ•™์Šต ์ธ์ž ์ „์ฒด(total_len, history_len, mm_subset, ์†์‹ค ๊ฐ€์ค‘์น˜ ๋“ฑ)๊ฐ€ ๋“ค์–ด ์žˆ๋‹ค.

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