NVIDIA-NeMo/Speech

NGPU-LM with ONNX model inference

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#14,501 opened on Aug 18, 2025

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Description

How can I perform inference with my ONNX-exported Fast-Conformer model using CTC decoding and NGPU-LM beam search?

Contributor guide

Research direction
Look for examples of ONNX model inference with CTC decoder and NGPU LM beam search in NeMo; check documentation for NGPU LM integration with ONNX models; trace the inference pipeline to identify configuration steps.
Tech stack
python
Domain
machine learningai
Issue type
Research
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
PythonONNXCTC decoding
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60