Repository navigation

FastConformer ASR 3/3: Parakeet and Nemotron ASR, the transducer as a graph loop - #892

Merged

vasilevklart merged 72 commits into

mainfrom

asr/03-transducer-loop

Oct 28, 2026

Merged

FastConformer ASR 3/3: Parakeet and Nemotron ASR, the transducer as a graph loop#892
vasilevklart merged 72 commits into
mainfrom
asr/03-transducer-loop

Commits on Oct 21, 2026
Commits on Oct 24, 2026
- Canary-Qwen: take a custom instruction from model_kwargs, not /generate's text
  
  dghosef
  and
  claude
  committed
  213ed80
- Docs: untimed transcription models get one segment per window
  
  dghosef
  and
  claude
  committed
  515af91
Commits on Oct 25, 2026
Commits on Oct 26, 2026
- Merge main into fc/asr
  vasilevklart
  committed
  bf9f067
- parakeet, nemotron_asr: out of this PR, into a follow-up on top of it
  vasilevklart
  committed
  32c4258
- Merge main into fc/asr
  vasilevklart
  committed
  6455afe
- RecurrentStatePool: gather / scatter_ over the step's addressing
  
  authored and
  vasilevklart
  committed
  323f929
- test: gather / scatter_ round-trip, replay vs eager addressing, padding rows on the sink
  vasilevklart
  committed
  3bf413b
- docs: RecurrentStatePool.gather / scatter_ are on main, not an open PR
  vasilevklart
  committed
  50026aa
- Revert "parakeet, nemotron_asr: out of this PR, into a follow-up on top of it"
  vasilevklart
  committed
  d357820
- Merge branch 'engine/recurrent-gather-scatter' into fc/transducer-loop
  vasilevklart
  committed
  ceadfa5
- parakeet: the transducer as a decode loop, its state in a recurrent pool
  vasilevklart
  committed
  6fcc8c3
- test: the transducer loop through the recurrent pool, against #796's decoder
  vasilevklart
  committed
  147e524
- docs: Parakeet and Nemotron keep their decoder state in a recurrent pool
  vasilevklart
  committed
  fca0849
- RecurrentStatePool: gather / scatter_ refuse a pool without a sink slot
  vasilevklart
  committed
  7f878a0
- Merge branch 'engine/recurrent-gather-scatter' into fc/transducer-loop
  vasilevklart
  committed
  d2cb78c
- audio_features: use the engine's fp32_precision_scope for the mel matmul
  
  dghosef
  and
  claude
  committed
  0664853
- Merge asr/01-canary into fc/transducer-loop
  dghosef
  committed
  8640efd
- test: the engine's fp32_precision_scope in place of the removed helper
  
  dghosef
  and
  claude
  committed
  1145f10
- canary, canary_qwen: cap the decode loop at the request's max_output_tokens
  
  dghosef
  and
  claude
  committed
  b1c4fe5
Commits on Oct 27, 2026
- transcriptions: no compression-ratio retry for the untimed ASR adapters
  
  dghosef
  and
  claude
  committed
  32f38f9
- parakeet: the decode tokens reach the client from the stop check's host copy
  vasilevklart
  committed
  f4a9ba4
- audio_features: only a failed decode is the upload's fault
  
  dghosef
  and
  claude
  committed
  c545b99
- canary: the prompt's KV is a rows span
  
  dghosef
  and
  claude
  committed
  6a3b19a
- canary: refuse a checkpoint whose mel front end NemoLogMel doesn't compute
  
  dghosef
  and
  claude
  committed
  f866b4a
- token_step: say decode is uncapped with accelerator graphs off
  
  dghosef
  and
  claude
  committed
  c9c7dac
- test: load_speech_file's blame split goes through _decode, and a resample failure stays the server's
  
  dghosef
  and
  claude
  committed
  cfaf667
- canary, canary_qwen: one audio file per request, refused before decoding
  
  dghosef
  and
  claude
  committed
  5ccd62f
- asr extra installs soundfile; Higgs segments and a stale test comment documented
  
  dghosef
  and
  claude
  committed
  e955a1a
- parakeet: one walk, the encoder output decoded where it lands
  vasilevklart
  committed
  18f7447
- parakeet: 64 greedy steps a decode iteration, not 16
  vasilevklart
  committed
  059f222
- parakeet: a 2,048-frame decode bucket, 164 s of audio
  vasilevklart
  committed
  8155c82
- Merge asr/01-canary into fc/transducer-loop
  dghosef
  committed
  81038df
- TransducerAdapter: the compression-ratio opt-out now comes from _UntimedTranscriptionAdapter
  
  dghosef
  and
  claude
  committed
  f3233b7
- parakeet, nemotron_asr: one audio file per request, refused before decoding
  
  dghosef
  and
  claude
  committed
  3f3edfd
- Merge asr/03-transducer-loop: #890's Canary fixes under the one-walk loop
  vasilevklart
  committed
  07b94df
- parakeet: one audio file per request, refused before decoding
  vasilevklart
  committed
  6e83587
- RecurrentStatePool: gather / scatter_ read the step's plan, and gather takes a start state
  
  dghosef
  and
  claude
  committed
  0b8a741
- Merge asr/02-recurrent-gather-scatter into fc/transducer-loop
  dghosef
  committed
  0e0269d
- parakeet: read and write the transducer state through the pool's gather(start=) / scatter_
  
  dghosef
  and
  claude
  committed
  3f530e6
- parakeet: refuse a transducer state pool with fewer than 2 slots
  
  dghosef
  and
  claude
  committed
  90caa2d
- parakeet: comments on the clock edge and slot lifetime match the code
  
  dghosef
  and
  claude
  committed
  f78bb0d
- docs: the recurrent state pool's gather / scatter_ for models
  
  dghosef
  and
  claude
  committed
  073d7d8
- Merge asr/02-recurrent-gather-scatter into fc/transducer-loop
  dghosef
  committed
  2761ca8
- RecurrentStatePool: say what a zero-span row addresses
  
  dghosef
  and
  claude
  committed
  edf0fe6
- Merge asr/02-recurrent-gather-scatter into fc/transducer-loop
  dghosef
  committed
  8087a42
- parakeet: drop the stop check's copy of the loop cap
  
  dghosef
  and
  claude
  committed
  4e2901c
- test: drop the frozen copy of the transducer step; the independent reference covers it
  
  dghosef
  and
  claude
  committed
  4e09fcc
- RecurrentStatePool: cast the scatter index once per step
  
  dghosef
  and
  claude
  committed
  7f49c53
- Merge asr/02-recurrent-gather-scatter into fc/transducer-loop
  dghosef
  committed
  d6972da
- Merge asr/03-transducer-loop (one-walk loop, 64-step chunk, 2048 bucket) into review fixes
  
  dghosef
  and
  claude
  committed
  dac3163
- Merge main into asr/03-transducer-loop
  vasilevklart
  committed
  e5f4cd5
- Merge main into asr/03-transducer-loop
  vasilevklart
  committed
  9329535

Commits

Commits on Oct 21, 2026

Commits on Oct 24, 2026

Commits on Oct 25, 2026

Commits on Oct 26, 2026

Commits on Oct 27, 2026