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NVIDIA-NeMo / Megatron-Bridge Public

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26.04

Open

No due date

•Last updated Apr 16, 2026

60% complete

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0 issues of 13 selected

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(13)
Closed
(20)

Hybrid-sharding support in Megatron FSDP with EP

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

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

Status: Open.

#1765 In NVIDIA-NeMo/Megatron-Bridge;

· erhoo82 opened

on Dec 18, 2025

[feature] DSv3 recipe for real routing

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

Status: Open.

#2242 In NVIDIA-NeMo/Megatron-Bridge;

· erhoo82 opened

on Feb 5, 2026

[Test] Use IB-SHARP in Hybrid-FSDP replication domain communication

bugSomething isn't workingSomething isn't working

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

Status: Open.

#1898 In NVIDIA-NeMo/Megatron-Bridge;

· erhoo82 opened

on Jan 9, 2026

[Test] H100 QWEN3 Performance tuning with HybridEP

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

Status: Open.

#2119 In NVIDIA-NeMo/Megatron-Bridge;

· scsudhakaran opened

on Jan 29, 2026

[bug] Qwen3 FP8 Performance worse than BF16

bugSomething isn't workingSomething isn't working

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

Status: Open.

#2842 In NVIDIA-NeMo/Megatron-Bridge;

· rhmukundan opened

on Mar 17, 2026

[feature] HybridEP optimization for NVL8 with EP>8, and tests for H100 and B200/300

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

Status: Open.

#2883 In NVIDIA-NeMo/Megatron-Bridge;

· erhoo82 opened

on Mar 18, 2026

[feature] enable improved Group Linear module for MoE

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

Status: Open.

#2885 In NVIDIA-NeMo/Megatron-Bridge;

· erhoo82 opened

on Mar 18, 2026

[feature] HybridEP with local permutation fusion

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

Status: Open.

#2886 In NVIDIA-NeMo/Megatron-Bridge;

· erhoo82 opened

on Mar 18, 2026

perf: Update GPT-OSS 120B B300 defaults to PP=4, EP=8, MBS=1

area:perfPerformance optimizations and benchmarkingPerformance optimizations and benchmarking

community-request

needs-authorAuthor action is required before review or merge can continueAuthor action is required before review or merge can continue

needs-follow-upIssue needs follow-upIssue needs follow-up

needs-reviewPR is ready for code review and waiting on a reviewerPR is ready for code review and waiting on a reviewer

Status: Open (in progress).

NVIDIA-NeMo/Megatron-Bridgenumber 2909

#2909 In NVIDIA-NeMo/Megatron-Bridge;

· salberdi-nvidia opened

on Mar 19, 2026

[feature] Test DSV3 FSDP NVFP4 at max scale proxy

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

needs-triageNew item needs classification and ownershipNew item needs classification and ownership

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

Status: Open.

#2930 In NVIDIA-NeMo/Megatron-Bridge;

· dingqingy-nv opened

on Mar 20, 2026

[patch][Bug] Megatron-FSDP fails only at MBridge due to assert

bugSomething isn't workingSomething isn't working

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

Status: Open.

#1971 In NVIDIA-NeMo/Megatron-Bridge;

· erhoo82 opened

on Jan 16, 2026

[bug] Qwen3 235B GB300 BF16 Regression

bugSomething isn't workingSomething isn't working

needs-triageNew item needs classification and ownershipNew item needs classification and ownership

Status: Open.

#3248 In NVIDIA-NeMo/Megatron-Bridge;

· rhmukundan opened

on Apr 9, 2026

[training] feat: enable fp4_param_gather in MixedPrecisionConfig

area:perfPerformance optimizations and benchmarkingPerformance optimizations and benchmarking

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

r0.4.0Auto-cherrypick to release branch. Apply before merge; cherrypick happens after merge.Auto-cherrypick to release branch. Apply before merge; cherrypick happens after merge.

Status: Open (in progress).

NVIDIA-NeMo/Megatron-Bridgenumber 3364

#3364 In NVIDIA-NeMo/Megatron-Bridge;

· dingqingy-nv opened

on Apr 16, 2026

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