# JAX v0.3.21 — JAX release v0.3.21

- Product: JAX (https://whatsnew.fyi/product/jax)
- Vendor: Google
- Date: 2022-10-03
- Version: v0.3.21
- Original notes: https://github.com/jax-ml/jax/releases/tag/jax-v0.3.21
- Permalink: https://whatsnew.fyi/product/jax/releases/v0.3.21

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Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **changed** — The persistent compilation cache now warns instead of raising an exception on error, allowing program execution to continue if something goes wrong with the cache; set JAX_RAISE_PERSISTENT_CACHE_ERRORS=true to revert this behavior

* Changes
  * The persistent compilation cache will now warn instead of raising an
    exception on error ({jax-issue}`#12582`), so program execution can continue
    if something goes wrong with the cache. Set
    `JAX_RAISE_PERSISTENT_CACHE_ERRORS=true` to revert this behavior.