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Nan grad norm in MXFP8 training

area:perfPerformance optimizations and benchmarkingPerformance optimizations and benchmarking

bugSomething isn't workingSomething isn't working

performance

performance/releasePerformance items related with NeMo releasePerformance items related with NeMo release

qa_rcca_done

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

Bug

#1255 In NVIDIA-NeMo/Megatron-Bridge;

· erhoo82 opened on Nov 10, 2025

Need a new conversion path to handle quantized HF models

area:quantQuantization (PTQ, QAT, FP8 recipes)Quantization (PTQ, QAT, FP8 recipes)

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

Feature

#967 In NVIDIA-NeMo/Megatron-Bridge;

· yaoyu-33 opened on Oct 15, 2025

Add Training Config Diff Tool: Mbridge vs. NeMo vs. MLM

area:miscCross-cutting utilities, logging, helpers, and other changesCross-cutting utilities, logging, helpers, and other changes

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

Feature

#1063 In NVIDIA-NeMo/Megatron-Bridge;

· yaoyu-33 opened on Oct 23, 2025

Clean up model variant providers and related provider functional tests

area:modelModel implementations and HF bridge logicModel implementations and HF bridge logic

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

Feature

#1076 In NVIDIA-NeMo/Megatron-Bridge;

· yaoyu-33 opened on Oct 24, 2025

add provide data_loader api to dataset providers

area:dataDataset builders, preprocessing, and samplersDataset builders, preprocessing, and samplers

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

Feature

#1099 In NVIDIA-NeMo/Megatron-Bridge;

· yaoyu-33 opened on Oct 27, 2025

Add sequence packing in VLM datasets (HF and Preloaded)

area:dataDataset builders, preprocessing, and samplersDataset builders, preprocessing, and samplers

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

Feature

#1106 In NVIDIA-NeMo/Megatron-Bridge;

· yaoyu-33 opened on Oct 27, 2025

Need a FP8 (low precision) page in Doc

area:quantQuantization (PTQ, QAT, FP8 recipes)Quantization (PTQ, QAT, FP8 recipes)

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

Task

#1147 In NVIDIA-NeMo/Megatron-Bridge;

· yaoyu-33 opened on Oct 30, 2025

Update all docstring / doc commands to use uv run

area:miscCross-cutting utilities, logging, helpers, and other changesCross-cutting utilities, logging, helpers, and other changes

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

Feature

#1273 In NVIDIA-NeMo/Megatron-Bridge;

· yaoyu-33 opened on Nov 10, 2025

MTP Support for VLM Training

area:modelModel implementations and HF bridge logicModel implementations and HF bridge logic

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

model-qwen

waiting-on-maintainersWaiting on maintainers to respondWaiting on maintainers to respond

x-aisg

x-lg

Status: Open.

Feature

#1313 In NVIDIA-NeMo/Megatron-Bridge;

· eagle705 opened on Nov 12, 2025

Logging to MLFlow

area:trainingTraining loop, callbacks, and runtime integrationTraining loop, callbacks, and runtime integration

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

waiting-on-maintainersWaiting on maintainers to respondWaiting on maintainers to respond

Status: Open.

#1387 In NVIDIA-NeMo/Megatron-Bridge;

· sbhavani opened on Nov 17, 2025

Request to way to fetch the latest release version

area:miscCross-cutting utilities, logging, helpers, and other changesCross-cutting utilities, logging, helpers, and other changes

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

#1508 In NVIDIA-NeMo/Megatron-Bridge;

· gautham-kollu opened on Nov 25, 2025

Update get_megatron_optimizer api for the upcoming refactor in MCore

area:trainingTraining loop, callbacks, and runtime integrationTraining loop, callbacks, and runtime integration

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

Task

#1572 In NVIDIA-NeMo/Megatron-Bridge;

· yaoyu-33 opened on Dec 3, 2025

DeepSeek-V3 intermittently fails with OOM

area:perfPerformance optimizations and benchmarkingPerformance optimizations and benchmarking

bugSomething isn't workingSomething isn't working

waiting-on-customerWaiting on the original author to respondWaiting on the original author to respond

Status: Open.

#1512 In NVIDIA-NeMo/Megatron-Bridge;

· scsudhakaran opened on Nov 26, 2025

<Ministral 3> Model Support

area:modelModel implementations and HF bridge logicModel implementations and HF bridge logic

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

model-fullrecipe

p0

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

Feature

#1601 In NVIDIA-NeMo/Megatron-Bridge;

· yaoyu-33 opened on Dec 5, 2025

InternVL3 Model Support

area:modelModel implementations and HF bridge logicModel implementations and HF bridge logic

community-request

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

model-bridgeonly

model-lm

waiting-on-maintainersWaiting on maintainers to respondWaiting on maintainers to respond

Status: Open.

#1297 In NVIDIA-NeMo/Megatron-Bridge;

· sbhavani opened on Nov 12, 2025

Kimi-VL Model Support

area:modelModel implementations and HF bridge logicModel implementations and HF bridge logic

community-request

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

model-bridgeonly

model-kimi

waiting-on-maintainersWaiting on maintainers to respondWaiting on maintainers to respond

Status: Open.

#1325 In NVIDIA-NeMo/Megatron-Bridge;

· sbhavani opened on Nov 12, 2025

muP support

area:trainingTraining loop, callbacks, and runtime integrationTraining loop, callbacks, and runtime integration

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

x-arobo

Status: Open.

Feature

#901 In NVIDIA-NeMo/Megatron-Bridge;

· paul-gibbons opened on Oct 9, 2025

Distrain Support

area:trainingTraining loop, callbacks, and runtime integrationTraining loop, callbacks, and runtime integration

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

#1923 In NVIDIA-NeMo/Megatron-Bridge;

· elliottnv opened on Jan 13, 2026

CP + Seq packing in LLM & VLM

area:dataDataset builders, preprocessing, and samplersDataset builders, preprocessing, and samplers

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

#1926 In NVIDIA-NeMo/Megatron-Bridge;

· elliottnv opened on Jan 13, 2026

disable precision_aware_optimizer for FSDP

bugSomething isn't workingSomething isn't working

performance

performance/releasePerformance items related with NeMo releasePerformance items related with NeMo release

Status: Draft (not ready).

NVIDIA-NeMo/Megatron-Bridgenumber 2025

#2025 In NVIDIA-NeMo/Megatron-Bridge;

· malay-nagda opened on Jan 22, 2026

Tune best performance for FSDP on GB300 for LLAMA31 405B

area:perfPerformance optimizations and benchmarkingPerformance optimizations and benchmarking

featureNew capabilities, enhancements, or enablement workNew capabilities, enhancements, or enablement work

performance

performance/optimizePerformance optimization trackingPerformance optimization tracking

trackingTracking issue for an ongoing project with smaller stepsTracking issue for an ongoing project with smaller steps

Status: Open.

#2118 In NVIDIA-NeMo/Megatron-Bridge;

· sanandaraj5597 opened on Jan 29, 2026