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[Main] Fix FusedAdam.use_decoupled_grad mis-set for Megatron-FSDP.
- #4427
#4427
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cspades
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Apr 27, 2026
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[Main] Fix FusedAdam.use_decoupled_grad mis-set for Megatron-FSDP.
#4427
cspades
merged 4 commits into
NVIDIA:main
NVIDIA/Megatron-LM:main
from
cspades:cye/mfsdp-decgrad-segfault
cspades/Megatron-LM:cye/mfsdp-decgrad-segfault
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Commits on Apr 22, 2026
Fix segfault caused by not overriding use_decoupled_grad for Megatron-FSDP.
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Commits on Apr 24, 2026
Merge branch 'main' into cye/mfsdp-decgrad-segfault
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Add more assert tests that guard against the FusedAdam.step() bug.
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Commits on Apr 27, 2026
Merge branch 'main' into cye/mfsdp-decgrad-segfault
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