Upgrade: Synchronization with Megatron-LM Core0.17.0 by lxd-cumt · Pull Request #34 · flagos-ai/Megatron-LM-FL

lxd-cumt · 2026-04-24T09:49:57Z

Megatron-LM-FL Core Upgrade, core_r0.17.0 (fa49087)

Key changes:

Merge upstream
Replace torch.cuda with cur_platform across 22 core files
Restore FlagScale-specific patches: engram DDP buffer separation, hetero pipeline, qk_layernorm_hidden_dim support
Sync override plugin functions with upstream 0.17.0 API signatures
Add 15 FlagScale-specific fields to TransformerConfig
Fix Muon optimizer: keep upstream 0.17.0 base, preserve engram parallel extensions
Clean up FlagScale Begin/End markers to only wrap FlagScale-added code
disable unit_tests/transformer/ for cicd, to be fixed

NVIDIA#3649) Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Signed-off-by: Xin Yao <xiny@nvidia.com> Co-authored-by: Xin Yao <xiny@nvidia.com>

…VIDIA#3686) Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

… tp_size. (NVIDIA#3575) Co-authored-by: xiaotaoliu <xiaotaoliu@tencent.com>

NVIDIA#3739) Co-authored-by: Hongbin Liu <lhb8125@users.noreply.github.com>

…IDIA#3680)

…IA#3805)

Signed-off-by: oliver könig <okoenig@nvidia.com>

Co-authored-by: mathemakitten <helen.ngo14@gmail.com> Co-authored-by: Helen Ngo <helenn@nvidia.com>

Signed-off-by: Keshav Santhanam <ksanthanam@nvidia.com> Co-authored-by: Shanmugam Ramasamy <shanmugamr@cw-dfw-cs-001-login-01.cm.cluster> Co-authored-by: shanmugamr1992 <shanmugamr1992@gmail.com>

Co-authored-by: Teodor-Dumitru Ene <teodord.ene@gmail.com> Co-authored-by: Robert Kirby <rkirby@nvidia.com> Co-authored-by: Shanmugam Ramasamy <shanmugamr@cw-dfw-cs-001-login-01.cm.cluster> Co-authored-by: rislam <rislam@nvidia.com>

…VIDIA#3799) Co-authored-by: claude[bot] <209825114+claude[bot]@users.noreply.github.com>

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

…IA#3789)" (NVIDIA#3834)

Co-authored-by: Keshav Santhanam <ksanthanam@nvidia.com>

Signed-off-by: oliver könig <okoenig@nvidia.com>

Signed-off-by: Salman Muin Kayser Chishti <13schishti@gmail.com> Signed-off-by: oliver könig <okoenig@nvidia.com> Co-authored-by: Salman Muin Kayser Chishti <13schishti@gmail.com>

Signed-off-by: oliver könig <okoenig@nvidia.com>

Signed-off-by: Charlie Truong <chtruong@nvidia.com>

Signed-off-by: dimapihtar <dpihtar@gmail.com>

Signed-off-by: Charlie Truong <chtruong@nvidia.com>

…aph when running eager (NVIDIA#3815)

**Megatron-LM-FL Core Upgrade, core_r0.17.0 (fa49087)** Key changes: - Merge upstream - Replace torch.cuda with cur_platform across 22 core files - Restore FlagScale-specific patches: engram DDP buffer separation, hetero pipeline, qk_layernorm_hidden_dim support - Sync override plugin functions with upstream 0.17.0 API signatures - Add 15 FlagScale-specific fields to TransformerConfig - Fix Muon optimizer: keep upstream 0.17.0 base, preserve engram parallel extensions - Clean up FlagScale Begin/End markers to only wrap FlagScale-added code - disable unit_tests/transformer/ for cicd, to be fixed --------- Signed-off-by: Xin Yao <xiny@nvidia.com> Signed-off-by: oliver könig <okoenig@nvidia.com> Signed-off-by: Keshav Santhanam <ksanthanam@nvidia.com> Signed-off-by: Salman Muin Kayser Chishti <13schishti@gmail.com> Signed-off-by: Charlie Truong <chtruong@nvidia.com> Signed-off-by: dimapihtar <dpihtar@gmail.com> Signed-off-by: gkollu <gkollu@nvidia.com> Signed-off-by: Gautham Kollu <gkollu@nvidia.com> Signed-off-by: Maanu Grover <maanug@nvidia.com> Signed-off-by: Asha Anoosheh <aanoosheh@nvidia.com> Signed-off-by: Cory Ye <cye@nvidia.com> Signed-off-by: Faradawn Yang <73060648+faradawn@users.noreply.github.com> Signed-off-by: Mike Chrzanowski <mchrzanowski@nvidia.com> Signed-off-by: ykarnati <ykarnati@nvidia.com> Signed-off-by: Onur Yilmaz <oyilmaz@nvidia.com> Signed-off-by: Robin Zhang <robinz@nvidia.com> Signed-off-by: Maxime Grenu <maxime.grenu@gmail.com> Signed-off-by: Maxime Kawawa-Beaudan <maxkawab@gmail.com> Signed-off-by: qiyuw <qiyuw@nvidia.com> Signed-off-by: rislam <rislam@nvidia.com> Signed-off-by: NeMo Bot <nemo-bot@nvidia.com> Signed-off-by: dimapihtar <dpykhtar@nvidia.com> Co-authored-by: Dennis(Zhenhuan) Liu <denliu@nvidia.com> Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Co-authored-by: Dun Liang <randonlang@gmail.com> Co-authored-by: Xin Yao <xiny@nvidia.com> Co-authored-by: Yuzhong Wang <yuzhongw@nvidia.com> Co-authored-by: xiaotaoliu <xiaotaoliu@tencent.com> Co-authored-by: Ritesh Patel <ritesh88@gmail.com> Co-authored-by: Hongbin Liu <lhb8125@users.noreply.github.com> Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com> Co-authored-by: Vitaly Kurin <yobibyte@users.noreply.github.com> Co-authored-by: Jenny Chen <jennifchen@nvidia.com> Co-authored-by: oliver könig <okoenig@nvidia.com> Co-authored-by: Jorge Albericio <jalbericiola@nvidia.com> Co-authored-by: mathemakitten <helen.ngo14@gmail.com> Co-authored-by: Helen Ngo <helenn@nvidia.com> Co-authored-by: Keshav Santhanam <ksanthanam@nvidia.com> Co-authored-by: Shanmugam Ramasamy <shanmugamr@cw-dfw-cs-001-login-01.cm.cluster> Co-authored-by: shanmugamr1992 <shanmugamr1992@gmail.com> Co-authored-by: Shanmugam Ramasamy <111910568+shanmugamr1992@users.noreply.github.com> Co-authored-by: Teodor-Dumitru Ene <teodord.ene@gmail.com> Co-authored-by: Robert Kirby <rkirby@nvidia.com> Co-authored-by: rislam <rislam@nvidia.com> Co-authored-by: Jianbin Chang <shjwudp@gmail.com> Co-authored-by: claude[bot] <209825114+claude[bot]@users.noreply.github.com> Co-authored-by: Seonmyeong Bak <sbak@nvidia.com> Co-authored-by: Teodor-Dumitru Ene <34819528+tdene@users.noreply.github.com> Co-authored-by: Salman Muin Kayser Chishti <13schishti@gmail.com> Co-authored-by: Charlie Truong <chtruong@nvidia.com> Co-authored-by: Dmytro Pykhtar <37850217+dimapihtar@users.noreply.github.com> Co-authored-by: Huy Vu <86480512+huvunvidia@users.noreply.github.com> Co-authored-by: Siddharth Singh <sidsingh@nvidia.com> Co-authored-by: gautham-kollu <gkollu@nvidia.com> Co-authored-by: Antoni-Joan Solergibert <asolergibert@nvidia.com> Co-authored-by: Maanu Grover <109391026+maanug-nv@users.noreply.github.com> Co-authored-by: Asha Anoosheh <aanoosheh@nvidia.com> Co-authored-by: Chenhan Yu <chenhany@nvidia.com> Co-authored-by: Cory Ye <44509866+cspades@users.noreply.github.com> Co-authored-by: Faradawn Yang <73060648+faradawn@users.noreply.github.com> Co-authored-by: Cory Ye <cye@nvidia.com> Co-authored-by: Mike Chrzanowski <mchrzanowski@nvidia.com> Co-authored-by: root <root@pool0-0020.cm.cluster> Co-authored-by: root <root@pool0-0038.cm.cluster> Co-authored-by: root <root@pool0-0022.cm.cluster> Co-authored-by: Yashaswi Karnati <144376261+yashaswikarnati@users.noreply.github.com> Co-authored-by: Shifang Xu <shifangx@nvidia.com> Co-authored-by: Lawrence McAfee <85179052+lmcafee-nvidia@users.noreply.github.com> Co-authored-by: Onur Yilmaz <oyilmaz@nvidia.com> Co-authored-by: Jon Barker <jbarker@nvidia.com> Co-authored-by: Hexin Wang <160587990+hexinw-nvidia@users.noreply.github.com> Co-authored-by: Li Jinliang <jinliangl@nvidia.com> Co-authored-by: Philip Petrakian <ppetrakian@nvidia.com> Co-authored-by: Lintch <44701395+returnL@users.noreply.github.com> Co-authored-by: anthropic-code-agent[bot] <242468646+Claude@users.noreply.github.com> Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: Tom Long <tolong@nvidia.com> Co-authored-by: Robin Zhang <robinz@nvidia.com> Co-authored-by: Eric Harper <eharper@nvidia.com> Co-authored-by: liuyun7345 <51505092+liuyun7345@users.noreply.github.com> Co-authored-by: wdykas <73254672+wdykas@users.noreply.github.com> Co-authored-by: William Dykas <wdykas@oci-hsg-cs-001-vscode-03.cm.cluster> Co-authored-by: root <root@nvl72077-T12.cm.cluster> Co-authored-by: root <root@nvl72098-T17.cm.cluster> Co-authored-by: Pingtian Li <158665726+Wohox@users.noreply.github.com> Co-authored-by: root <root@nvl72160-T18.cm.cluster> Co-authored-by: root <root@nvl72006-T11.cm.cluster> Co-authored-by: Deepak Narayanan <dnarayanan@nvidia.com> Co-authored-by: Saakshi Gupta <saakshigupta2002@gmail.com> Co-authored-by: Progyan <progyan.das@iitgn.ac.in> Co-authored-by: Boxiang Wang <boxiangw@nvidia.com> Co-authored-by: Nan Zheng <80790206+nanz-nv@users.noreply.github.com> Co-authored-by: kinjalpatel27 <31936134+kinjalpatel27@users.noreply.github.com> Co-authored-by: Maxime Grenu <69890511+cluster2600@users.noreply.github.com> Co-authored-by: Maxime Kawawa-Beaudan <maxkawab@gmail.com> Co-authored-by: Nick Schank <nick@reflection.ai> Co-authored-by: Carlos Gomes <cgomes@nvidia.com> Co-authored-by: Qiyu Wan <39144338+WanZzzzzz@users.noreply.github.com> Co-authored-by: qiyuw <qiyuw@nvidia.com> Co-authored-by: root <root@pool0-0084.cm.cluster> Co-authored-by: root <root@pool0-0393.cm.cluster> Co-authored-by: root <root@pool0-0154.cm.cluster> Co-authored-by: root <root@pool0-0021.cm.cluster> Co-authored-by: root <root@pool0-0331.cm.cluster> Co-authored-by: root <root@pool0-0079.cm.cluster> Co-authored-by: root <root@pool0-0137.cm.cluster> Co-authored-by: Saksham Goyal <sakgoy2001@gmail.com> Co-authored-by: ldl <140483453+lvdunlin@users.noreply.github.com> Co-authored-by: lvdunlin <lvdunlin@xiaomi.com> Co-authored-by: vasunvidia <108759426+vasunvidia@users.noreply.github.com>

Victarry and others added 30 commits March 11, 2026 02:17

feat(checkpoint): zero-copy storage sharing in CheckpointWithoutOutput (

f544034

NVIDIA#3649) Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Fuse MLA DOWN projection GEMMs (NVIDIA#3039)

8fd390d

Signed-off-by: Xin Yao <xiny@nvidia.com> Co-authored-by: Xin Yao <xiny@nvidia.com>

fix: skip FSDP DTensor boundary validation under fake process group (N…

7d52694

…VIDIA#3686) Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

[main] fix(moe): fix the bug where gate was not sliced when kv_head <…

16a8cdb

… tp_size. (NVIDIA#3575) Co-authored-by: xiaotaoliu <xiaotaoliu@tencent.com>

fix(offload): reset activation offload manager after eval as well as … (

b8e23d5

NVIDIA#3739) Co-authored-by: Hongbin Liu <lhb8125@users.noreply.github.com>

chore: rotate oncall schedule

07e512a

Improve error logging when invalid number of tokens is requested. (NV…

e20b89a

…IDIA#3680)

Add NVIDIA-Nemotron-3-Super-120B-A12B-BF16 to ModelOpt examples (NVID…

5bc89f3

…IA#3805)

build: Bump TE2.13 (NVIDIA#3800)

da46946

Signed-off-by: oliver könig <okoenig@nvidia.com>

Ensure dummy_forward does not attempt to run cudagraphs (NVIDIA#3789)

8e64e69

Co-authored-by: mathemakitten <helen.ngo14@gmail.com> Co-authored-by: Helen Ngo <helenn@nvidia.com>

Add speculative decoding support with MTP layers (NVIDIA#3594)

8f539df

Signed-off-by: Keshav Santhanam <ksanthanam@nvidia.com> Co-authored-by: Shanmugam Ramasamy <shanmugamr@cw-dfw-cs-001-login-01.cm.cluster> Co-authored-by: shanmugamr1992 <shanmugamr1992@gmail.com>

Shanmugamr1992/megatron inference ultra (NVIDIA#3784)

39472d8

Co-authored-by: Teodor-Dumitru Ene <teodord.ene@gmail.com> Co-authored-by: Robert Kirby <rkirby@nvidia.com> Co-authored-by: Shanmugam Ramasamy <shanmugamr@cw-dfw-cs-001-login-01.cm.cluster> Co-authored-by: rislam <rislam@nvidia.com>

Fix backward compatibility issue with MFSDP --grad-reduce-in-bf16 (N…

d997820

…VIDIA#3799) Co-authored-by: claude[bot] <209825114+claude[bot]@users.noreply.github.com>

feat: add NCCL flight recorder configuration support (NVIDIA#3806)

251a754

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Revert "Ensure dummy_forward does not attempt to run cudagraphs (NVID…

5a3aa17

…IA#3789)" (NVIDIA#3834)

Fix if statement in main (NVIDIA#3833)

5b25326

Co-authored-by: Keshav Santhanam <ksanthanam@nvidia.com>

Update golden values of weekly tests (NVIDIA#3829)

6657173

Signed-off-by: oliver könig <okoenig@nvidia.com>

build: Loosen TE restriction (NVIDIA#3827)

4736aed

Signed-off-by: oliver könig <okoenig@nvidia.com>

Upgrade GitHub Actions for Node 24 compatibility (NVIDIA#3830)

1d5e68b

Signed-off-by: Salman Muin Kayser Chishti <13schishti@gmail.com> Signed-off-by: oliver könig <okoenig@nvidia.com> Co-authored-by: Salman Muin Kayser Chishti <13schishti@gmail.com>

Do not let chunked prefill generate decode logprobs (NVIDIA#3777)

46227e0

Prevent double serialization inside Flask server (NVIDIA#3653)

e08dc9d

Allow RL to run inference-only via skip-train (NVIDIA#3744)

29e798a

Announce Python 3.12 migration (NVIDIA#3825)

4c1d0e4

Signed-off-by: oliver könig <okoenig@nvidia.com>

Update copy-pr-bot.yaml [skip ci]

fabbcdf

ci: Skip test_wrong_cuda_graph_impl_returns_false in LTS (NVIDIA#3847)

b250472

Signed-off-by: Charlie Truong <chtruong@nvidia.com>

ci: Mark TestCoordinator.test_throughput as flaky (NVIDIA#3849)

7ca9dc5

Signed-off-by: Charlie Truong <chtruong@nvidia.com>

find optimal number of workers (NVIDIA#3699)

f261906

Signed-off-by: dimapihtar <dpihtar@gmail.com>

remove encoder_and_decoder (NVIDIA#3836)

b7437fe

Signed-off-by: dimapihtar <dpihtar@gmail.com>

ci: Skip more tests in test_vision_cuda_graphs for LTS (NVIDIA#3860)

8a806e5

Signed-off-by: Charlie Truong <chtruong@nvidia.com>

Ensure that inference dummy_forward does not try to match on a cudagr…

90fee1f

…aph when running eager (NVIDIA#3815)

lxd-cumt added 26 commits April 27, 2026 15:14

add ignore

73a020c

fix

d45d0f5

fix pip

4390bb1

fix

3203fe2

append fix

435a0e8

tmp disable some tests, due to cu-malloc errors

42f3c89

fix unit test core

251bbe3

tmp fix for cicd

4cbc962

disable

da0dcd0

fix

3ae42cd

polish

011d5ab

fix pipeline tst_multimodule_schedules

d3de087

remove ignore

5f3a054

add ignore

9bbc434

fix triton flatten for old version

a47ad50

fix cp+thd for old te version

9b7634e

fix

b4fa09e

fix

8fecbe5

add empty cache

a153042

fix

78f95c9

tmp disable

378d6b9

cancel transformer

c52478f

fix cuda functional test: delete legacy tokenizer

66cf497

append fix

13882de

fix cicd labels

1f2cb48

enable all unit tests except transformer

de24f22

zhaoyinglia approved these changes Apr 30, 2026

View reviewed changes

aoyulong approved these changes Apr 30, 2026

View reviewed changes

aoyulong merged commit ecb5dfa into flagos-ai:main Apr 30, 2026
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Upgrade: Synchronization with Megatron-LM Core0.17.0#34

Upgrade: Synchronization with Megatron-LM Core0.17.0#34
aoyulong merged 972 commits into
flagos-ai:mainfrom
lxd-cumt:merge-upstream-0.17.0-v3

lxd-cumt commented Apr 24, 2026 •

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lxd-cumt commented Apr 24, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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lxd-cumt commented Apr 24, 2026 •

edited

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