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NVIDIA-NeMo / RL Public

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perf: shard concat overhead#2002

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pjo256 wants to merge 6 commits intoNVIDIA-NeMo:mainNVIDIA-NeMo/RL:mainfrom

pjo256:shard-concat-overheadpjo256/RL:shard-concat-overheadCopy head branch name to clipboard

Conversation Commits6 (6)Checks Files changed

Open

perf: shard concat overhead#2002
pjo256 wants to merge 6 commits intoNVIDIA-NeMo:mainfrom
pjo256:shard-concat-overhead

Commits

Commits on Feb 21, 2026

fix: avoid repeated concat copies in shard_by_batch_size
pjo256
committed
fix: preallocate shard tensors to remove chunk concat copy overhead
pjo256
committed
fix: simplify with per-shard range aggregation
pjo256
committed
docs: cleanup comments
pjo256
committed
tests: fix missing empty PackedTensor, add a unit test for it
pjo256
committed
fix: lint
pjo256
committed

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