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Fix optional chat_completions returnables

complexity: low

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Status: Merged (completed).

NVIDIA/Megatron-LMnumber 3519

#3519 In NVIDIA/Megatron-LM;

· by tdene was closed on Mar 4, 2026

Fix for PR-2142

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 3165

#3165 In NVIDIA/Megatron-LM;

· by HaochenYuan was closed on Jan 30, 2026

Remove calculation of padding token in moe routing loss

complexity: high

dev2main: mbridgedev to main: this PR is needed in main for mbridgedev to main: this PR is needed in main for mbridge

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Final ReviewPR is in the "final review" stagePR is in the "final review" stage

module: moe

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 2142

#2142 In NVIDIA/Megatron-LM;

· by HaochenYuan was closed on Jan 23, 2026

Add MTP support for hybrid models

community-request

Run functional tests

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 2363

#2363 In NVIDIA/Megatron-LM;

· by rkarimimahab was closed on Feb 1, 2026

[DEV] change to allow qwen3 style weight decay

Status: Closed (abandoned).

NVIDIA/Megatron-LMnumber 2721

#2721 In NVIDIA/Megatron-LM;

· by FDecaYed was closed on Jan 26, 2026

[Dev] Changes to support multimodule pipelining

dev branchDev branch related issues and developmentDev branch related issues and development

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Status: Closed (abandoned).

NVIDIA/Megatron-LMnumber 2092

#2092 In NVIDIA/Megatron-LM;

· by yashaswikarnati was closed on Mar 19, 2026

[Dev] test(MoE): Add performance test for MoE layer

dev branchDev branch related issues and developmentDev branch related issues and development

Expert Review[deprecated] Apply this label to indicate that your PR is ready for expert review.[deprecated] Apply this label to indicate that your PR is ready for expert review.

Status: Closed (abandoned).

NVIDIA/Megatron-LMnumber 2177

#2177 In NVIDIA/Megatron-LM;

· by Victarry was closed on Jan 23, 2026

Super tiny fix typo

community-request

Status: Closed (abandoned).

NVIDIA/Megatron-LMnumber 2215

#2215 In NVIDIA/Megatron-LM;

· by fzyzcjy was closed on Feb 2, 2026

[main] feat(moe): Support gated delta net for Qwen3-Next (1/4)

complexity: high

dev2main: mbridgedev to main: this PR is needed in main for mbridgedev to main: this PR is needed in main for mbridge

Expert Review[deprecated] Apply this label to indicate that your PR is ready for expert review.[deprecated] Apply this label to indicate that your PR is ready for expert review.

module: moe

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 1989

#1989 In NVIDIA/Megatron-LM;

· by yuzhongw-nvidia was closed on Jan 16, 2026

feat(moe): Fine-grained activation offloading

complexity: high

dev2main: mbridgedev to main: this PR is needed in main for mbridgedev to main: this PR is needed in main for mbridge

Expert Review[deprecated] Apply this label to indicate that your PR is ready for expert review.[deprecated] Apply this label to indicate that your PR is ready for expert review.

Final ReviewPR is in the "final review" stagePR is in the "final review" stage

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 1913

#1913 In NVIDIA/Megatron-LM;

· by lhb8125 was closed on Jan 15, 2026

Hybrid Context Parallel Feature

complexity: high

dev2main: mbridgedev to main: this PR is needed in main for mbridgedev to main: this PR is needed in main for mbridge

Final ReviewPR is in the "final review" stagePR is in the "final review" stage

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 2282

#2282 In NVIDIA/Megatron-LM;

· by parthmannan was closed on Jan 17, 2026

Support multimodule communication

complexity: low

Run tests

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 2031

#2031 In NVIDIA/Megatron-LM;

· by yaoyu-33 was closed on Jan 24, 2026

[Dev] docs(megatron-fsdp): add Megatron-FSDP user guide

dev branchDev branch related issues and developmentDev branch related issues and development

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 2397

#2397 In NVIDIA/Megatron-LM;

· by xuwchen was closed on Jan 16, 2026

Support CUDA Graph capture offloading modules

dev branchDev branch related issues and developmentDev branch related issues and development

Status: Closed (abandoned).

NVIDIA/Megatron-LMnumber 2437

#2437 In NVIDIA/Megatron-LM;

· by lhb8125 was closed on Feb 24, 2026

Add a UT for the entire training loop

Status: Closed (abandoned).

NVIDIA/Megatron-LMnumber 2409

#2409 In NVIDIA/Megatron-LM;

· by yuzhongw-nvidia was closed on Jan 21, 2026

[Main] Partial CUDA Graph support for EP Overlap

complexity: high

dev2main: mbridgedev to main: this PR is needed in main for mbridgedev to main: this PR is needed in main for mbridge

Expert Review[deprecated] Apply this label to indicate that your PR is ready for expert review.[deprecated] Apply this label to indicate that your PR is ready for expert review.

Final ReviewPR is in the "final review" stagePR is in the "final review" stage

module: moe

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 2184

#2184 In NVIDIA/Megatron-LM;

· by Wohox was closed on Jan 16, 2026

Refactoring of PP implementation for hybrid models to support virtual pipeline parallelism

Status: Closed (abandoned).

NVIDIA/Megatron-LMnumber 2492

#2492 In NVIDIA/Megatron-LM;

· by deepakn94 was closed on Feb 26, 2026

[Dev] Refactor MoE loss logging

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 2569

#2569 In NVIDIA/Megatron-LM;

· by yanring was closed on Mar 5, 2026

Modify config for the PP fix.

Expert Review[deprecated] Apply this label to indicate that your PR is ready for expert review.[deprecated] Apply this label to indicate that your PR is ready for expert review.

Status: Closed (abandoned).

NVIDIA/Megatron-LMnumber 2603

#2603 In NVIDIA/Megatron-LM;

· by yobibyte was closed on Jan 26, 2026

Use FP4 context for mamba

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 2604

#2604 In NVIDIA/Megatron-LM;

· by kwyss-nvidia was closed on Feb 10, 2026

[Community][Main] fix(moe): Fix theoretical memory calculation of layernorm.

community-request

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 2434

#2434 In NVIDIA/Megatron-LM;

· by 1195343015 was closed on Jan 30, 2026

Add router replay for MoE models

community-request

complexity: medium

Expert Review[deprecated] Apply this label to indicate that your PR is ready for expert review.[deprecated] Apply this label to indicate that your PR is ready for expert review.

Final ReviewPR is in the "final review" stagePR is in the "final review" stage

module: moe

Run functional tests

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 2101

#2101 In NVIDIA/Megatron-LM;

· by litianjian was closed on Jan 27, 2026

[training migration] Add StragglerDetectionConfig dataclass

complexity: low

enhancementNew feature or requestNew feature or request

Final ReviewPR is in the "final review" stagePR is in the "final review" stage

module: training

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 2435

#2435 In NVIDIA/Megatron-LM;

· by maanug-nv was closed on Jan 28, 2026

Make Megatron-FSDP torch.compile compatible

Final ReviewPR is in the "final review" stagePR is in the "final review" stage

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 2425

#2425 In NVIDIA/Megatron-LM;

· by shjwudp was closed on Jan 20, 2026

[M-FSDP] Fix double buffering not working with activation recompute

Final ReviewPR is in the "final review" stagePR is in the "final review" stage

module: megatron-fsdp

Status: Merged (completed).

NVIDIA/Megatron-LMnumber 2689

#2689 In NVIDIA/Megatron-LM;

· by shjwudp was closed on Jan 28, 2026