feat: add --max-checkpoint-count to limit saved checkpoints#1914
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JIANG54864 wants to merge 2 commits into
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feat: add --max-checkpoint-count to limit saved checkpoints#1914JIANG54864 wants to merge 2 commits into
JIANG54864 wants to merge 2 commits into
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Add a new training argument --max-checkpoint-count to automatically prune old Megatron checkpoint directories during training. When set, only the N most recent iter_* directories are retained after each save, preventing unbounded disk usage on long training runs. Changes: - slime/utils/arguments.py: add --max-checkpoint-count argument and validation - slime/backends/megatron_utils/checkpoint.py: add cleanup_old_checkpoints() - slime/backends/megatron_utils/actor.py: call cleanup after save_model() Usage: --save /path/to/ckpt --save-interval 20 --max-checkpoint-count 5 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Add a new training argument --max-checkpoint-count to automatically prune old Megatron checkpoint directories during training. When set, only the N most recent iter_* directories are retained after each save, preventing unbounded disk usage on long training runs.
Changes:
Usage: --save /path/to/ckpt --save-interval 20 --max-checkpoint-count 5