Skip to content

chore: ⬆️ Update mudler/parakeet.cpp to 843600590f96a31467a5199f827c253f34c110f7#10198

Merged
mudler merged 1 commit into
masterfrom
chore/bump-parakeet-banded
Jun 6, 2026
Merged

chore: ⬆️ Update mudler/parakeet.cpp to 843600590f96a31467a5199f827c253f34c110f7#10198
mudler merged 1 commit into
masterfrom
chore/bump-parakeet-banded

Conversation

@localai-bot
Copy link
Copy Markdown
Collaborator

Bumps the parakeet-cpp backend pin (PARAKEET_VERSION in backend/go/parakeet-cpp/Makefile) to mudler/parakeet.cpp@843600590, the merge of parakeet.cpp#9.

What this brings

NeMo rel_pos_local_attn banded / Longformer self-attention with a chunk-matmul construction in the FastConformer encoder. Long audio now uses O(T·window) attention instead of global O(T²), fixing the encoder OOM on long clips that took down a node.

Measured on a 16.6-min clip (tdt-0.6b-v3, GB10, CPU/16t):

Attention Wall Peak RSS
global O(T²) 148 s 54 GB
banded W=128 (NeMo full) 37 s 9.4 GB

~4× faster, ~5.7× less peak memory, at NeMo's full [128,128] window. Banding auto-enables past >8192 encoder frames; short clips stay on the global path and are byte-identical. No C-ABI change (the bump only changes encoder internals).

Follow-up

After merge + image rebuild, the parakeet backend can safely handle long audio without OOMing the node.

Update PARAKEET_VERSION to mudler/parakeet.cpp@8436005
(merge of parakeet.cpp#9). Brings NeMo rel_pos_local_attn banded/Longformer
attention with the chunk-matmul construction: long audio now uses O(T*window)
attention instead of global O(T^2), fixing the encoder OOM on long clips
(~16.6-min clip: 54GB->9.4GB peak, ~4x faster) at NeMo's full [128,128] window.
Short clips are unchanged (global path). No C-ABI change.

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
Assisted-by: Claude:claude-opus-4-8
@mudler mudler merged commit 0e6712f into master Jun 6, 2026
63 of 64 checks passed
@mudler mudler deleted the chore/bump-parakeet-banded branch June 6, 2026 07:25
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Projects

None yet

Development

Successfully merging this pull request may close these issues.

2 participants