[TTS][EasyMagpietts] Online CFG Distillation

.devcontainer/devDockerfile

@@ -0,0 +1,11 @@
+ARG NEMO_VERSION=25.11
+
+FROM nvcr.io/nvidia/nemo:${NEMO_VERSION}
+
+LABEL \
+    maintainer="NeMoTTS team" \
+    description="NeMoTTS Dev Container"
+
+WORKDIR /workspace/NeMo
+
+USER root

.devcontainer/devcontainer.json

@@ -0,0 +1,26 @@
+{
+  "name": "NeMoTTS Dev Container",
+  "build": {
+    "dockerfile": "../.devcontainer/devDockerfile"
+  },
+  "runArgs": [
+    "--gpus",
+    "\"device=0,1\"",
+    "--ipc=host",
+    "--name",
+    "${localEnv:USER}_nemo_tts_devcontainer_easymagpietts_online_cfg_distillation"
+  ],
+  "workspaceFolder": "/workspace/NeMo",
+  "mounts": [
+    "source=${localWorkspaceFolder},target=/workspace/NeMo,type=bind"
+  ],
+  "remoteUser": "root",
+  "postCreateCommand": "pip install -e /workspace/NeMo --no-deps && pip install git+https://github.com/sarulab-speech/UTMOSv2.git@v1.2.1",
+  "customizations": {
+    "vscode": {
+        "settings": {
+            "terminal.integrated.shell.linux": "/bin/bash"
+        }
+    }
+  }
+}

examples/tts/easy_magpietts.py

@@ -16,11 +16,17 @@
 import torch.multiprocessing as mp
 from omegaconf import OmegaConf, open_dict
 
-from nemo.collections.tts.models import EasyMagpieTTSModel, EasyMagpieTTSModelOnlinePO
+from nemo.collections.tts.models import EasyMagpieCFGDistillation, EasyMagpieTTSModel, EasyMagpieTTSModelOnlinePO
 from nemo.core.config import hydra_runner
 from nemo.utils import logging
 from nemo.utils.exp_manager import exp_manager
 
+_TRAIN_MODES: list[str] = [
+    "train",
+    "online_cfg_distillation_train",
+    "onlinepo_train",
+]
+
 
 @hydra_runner(config_path="conf/magpietts", config_name="easy_magpietts")
 def main(cfg):
@@ -43,8 +49,12 @@ def main(cfg):
     exp_manager(trainer, cfg.get("exp_manager", None))
 
     mode = cfg.get('mode', 'train')
+    train_modes_msg = ", ".join(_TRAIN_MODES)
+
     if mode == 'train':
         model = EasyMagpieTTSModel(cfg=cfg.model, trainer=trainer)
+    elif mode == "online_cfg_distillation_train":
+        model = EasyMagpieCFGDistillation(cfg=cfg.model, trainer=trainer)
     elif mode == 'onlinepo_train':
         model_cfg = cfg.model
         with open_dict(model_cfg):
@@ -53,11 +63,11 @@ def main(cfg):
     elif mode == 'test':
         model = EasyMagpieTTSModel(cfg=cfg.model, trainer=trainer)
     else:
-        raise NotImplementedError(f"Only train, onlinepo_train and test modes are supported. Got {mode}")
+        raise NotImplementedError(f"Only {train_modes_msg} and test modes are supported. Got {mode}.")
 
     model.maybe_init_from_pretrained_checkpoint(cfg=cfg)
 
-    if mode in ['train', 'onlinepo_train']:
+    if mode in _TRAIN_MODES:
         trainer.fit(model)
     elif mode == 'test':
         trainer.test(model)

nemo/collections/tts/models/__init__.py

@@ -15,6 +15,7 @@
 from nemo.collections.tts.models.aligner import AlignerModel
 from nemo.collections.tts.models.audio_codec import AudioCodecModel
 from nemo.collections.tts.models.easy_magpietts import EasyMagpieTTSModel
+from nemo.collections.tts.models.easy_magpietts_cfg_distillation import EasyMagpieCFGDistillation
 from nemo.collections.tts.models.easy_magpietts_inference import EasyMagpieTTSInferenceModel
 from nemo.collections.tts.models.easy_magpietts_preference_optimization import EasyMagpieTTSModelOnlinePO
 from nemo.collections.tts.models.fastpitch import FastPitchModel
@@ -45,4 +46,5 @@
     "MagpieTTSModelOfflinePODataGen",
     "MagpieTTSModelOfflinePO",
     "MagpieTTSModelOnlinePO",
+    "EasyMagpieCFGDistillation",
 ]