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 the `monitored_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 
| This pull request was exported from Phabricator. Differential Revision: D73004419 |
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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/evaluateas 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