Sanitize Metric Name in Checkpoints #990
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Summary:
Context
Metric names may be included in checkpoint names when specifying a
best_checkpoint_config
, but no verification is done on the metric name. This may lead to nested directory structures if checkpoint names contain/
, e.g.:f721785233
Here we use
top1_accuracy/evaluate
as themonitored_metric
, which will create checkpoints in a nested directory:{F1977112918}
Checkpointers won't be able to appropriately restore the checkpoint with the best monitored metric, as each checkpoint will be stored in a different directory.
Proposed change
In this diff, we sanitize the metric name prior to checkpoint saving, replacing
/
with_
. Now, checkpoints are saved in the same directory:f721793003
{F1977113027}
Differential Revision: D73004419