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Fix issue where parameter groups with different min/max LRs get overridden at checkpoint load time
- #4705
#4705
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dimapihtar
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jstjohn:jstjohn/fix_dist_op_pg_lr_override
jstjohn/Megatron-LM:jstjohn/fix_dist_op_pg_lr_override
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Jul 17, 2026
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Fix issue where parameter groups with different min/max LRs get overridden at checkpoint load time
#4705
dimapihtar
merged 10 commits into
NVIDIA:main
NVIDIA/Megatron-LM:main
from
jstjohn:jstjohn/fix_dist_op_pg_lr_override
jstjohn/Megatron-LM:jstjohn/fix_dist_op_pg_lr_override
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Commits on May 15, 2026
Fix issue where parameter groups with different min/max LRs end up having the same key at dist op load time which leads to different LRs on checkpoint resumption
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Address confusing __optional_keys__ use
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Fix formatting
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Add more clarifying comments on the current design and what it is doing
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Commits on Jun 9, 2026
Merge branch 'main' into jstjohn/fix_dist_op_pg_lr_override
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Remove the hard-coded missing key string
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Update comment
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Commits on Jun 12, 2026
Merge in main and fix conflicts in optimizer
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Commits on Jun 25, 2026
Merge branch 'main' into jstjohn/fix_dist_op_pg_lr_override
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Commits on Jul 15, 2026
Merge branch 'main' into jstjohn/fix_dist_op_pg_lr_override
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