Skip to content

v3.0.2 — speed restored

Choose a tag to compare

@mrbizarro mrbizarro released this 28 May 12:08
· 28 commits to main since this release

v3.0.2 — speed restored

For the past two months Boost and Turbo have been silently doing nothing — or doing the wrong thing. Two unrelated bugs landed within hours of each other on May 9 and cancelled each other out, so the symptom was just "renders feel slow." This release fixes both.

What was broken

  • The acceleration monkey-patch in mlx_warm_helper.py targeted only TextToVideoPipeline.denoise_loop. After ltx-2-mlx renamed that to DistilledPipeline (~May 9), the patch hit 3 of 9 import sites. The active Standard T2V path through _base.BasePipeline.generate was never patched — every Boost/Turbo run since May 9 silently went full denoise.
  • Same evening, commit 3e4bfd8 bumped protected_tail from ceil(N/3)ceil(N/2) to fix Turbo eye/skin artifacts. On the 8-step schedule this dropped cacheable slots from 3 to 2 — meaning Turbo became identical to Boost.

What you'll see

Standard T2V, accel=turbo: 503s → ~310s (~38% faster). Boost: 503s → 364s. Compound env+turbo: ~251s (~50% faster). All v3.0.1 fixes (FFLF crash, update auto-detect) carry forward.

Update

Update once from the Phosphene tile. If you're on anything older than v3.0.1, Update twice.


Issue #9 reply (oo2music)

hi @oo2music — v3.0.2 just shipped. The FFLF crash fix from v3.0.1 is in there (the decode_and_stream kwarg shim into get_kf_pipe), plus a separate pair of fixes that restore Boost/Turbo speed — both had been silently no-op'ing since May 9.

You're already on v3.0, so one Update from the Phosphene tile should get you to v3.0.2. If FFLF works for you now, feel free to close this — and if anything's still off, paste a fresh trace and I'll reopen.


Issue #14 reply (ronyeoh)

hi @ronyeoh — the Update-twice path from the earlier reply should have walked you from 2.0.0 through 3.0.1; v3.0.2 just shipped on top of that.

Worth flagging: v3.0.2 also fixes two speed bugs that had been cancelling each other out since May 9 — Boost and Turbo were silently running at full denoise (or worse, doing the same thing as each other). Standard T2V at turbo goes from ~503s → ~310s after the fix. If renders felt slow on your end, that's likely why.

Update from the Phosphene tile — twice if you're still on 2.0.0, once if you made it to 3.x. Paste a fresh trace if it still won't move and I'll dig in.