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Track split_megabytes in wandb. #2629

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Track split_megabytes in wandb. #2629

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Track split_megabytes in wandb.
yobibyte Dec 11, 2025
a7d1dae
Merge branch 'main' into split_bytes
yaox12 Feb 2, 2026
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4 changes: 4 additions & 0 deletions megatron/rl/rl_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -975,9 +975,13 @@ def maybe_log_training_metrics(
advantages = wandb_writer.Table(
columns=['advantages'], data=[[x] for x in group_stats.advantages]
)
stats = torch.cuda.memory_stats()
# 1024*1024 = 1048576
n_split_megabytes = stats.get("inactive_split_bytes.all.current", 0)/1048576
wandb_writer.log(
{
**{
'split_megabytes': n_split_megabytes,
'group_means_hist': wandb_writer.plot.histogram(
group_table, 'group_means', 'Group Means'
),
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