This commit changes the JAX codebase to use Python's builtin logging instead of ABSL logging. With the latter being used in JAX code as of now, the change to Python builtin logging is advised for the following reasons (among others):
- absl-py can be removed as an external dependency of JAX.
- Builtin logging brings the option of adding more log handlers, for example file handlers for log dumps or writers to different IO streams.
Logging in JAX is ported over to take place at the module level. While previously, some Python namespaces within JAX already used module-scoped logging via absl.vlog, the following idiom was adopted to provide the same functionality in Python builtin logging:
```py
import logging
logger = logging.getLogger(__name__)
logger.debug(...)
logger.info(...)
```
The builtin root logger is left untouched, which is beneficial for downstream users planning to customize the Python root logger. All JAX internal code promises to log to descendants of the top-level "jax" logger by virtue of log propagation.
The package `absl-py` was removed from JAX's install requirements, and added into its test requirements.
We don't have a formal support policy for scipy versions, but 1.5 dates from around the same date as the oldest supported NumPy release NEP-29 would have us support (1.20).
This is being used in the following ways in this CL:
* To dump IR, you can now pass paths with `gs://` or `cns` and the HLO can be dumped to those paths.
* Removing the TF dep from gda serialization.
PiperOrigin-RevId: 452117007
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391dea76bc8fe264cf26ec93d42147f87847894d by Peter Hawkins <phawkins@google.com>:
Update version numbers after jax/jaxlib 0.3.7 release.
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/jax/pull/10324 from hawkinsp:jaxlib 391dea76bc8fe264cf26ec93d42147f87847894d
PiperOrigin-RevId: 442311051
Over time JAX has sprouted many variants of XLA translation rules, each with slightly different but overlapping arguments. This change consolidates them into a new xla.TranslationRule signature:
rule(ctx, avals_in, avals_out, *args, **params)
where ctx contains the parts of the other signatures that were typically not specific to a particular equation.
Since there are many JAX rules to migrate, and even a number of translation rules belonging to projects downstream of JAX, we leave backwards compatibility shims around `xla.translations`, `xla.backend_specific_translations`, and `xla.call_translations` which seem to be the only ones used outside JAX itself.
In passing, this change alters the semantics of `backend` arguments to nested `jit` blocks. We now always canonicalize the backend to a specific backend at the outermost `jit`, and do not complain if an inner `jit` has an explicit `backend` that matches the current default choice.
PiperOrigin-RevId: 403607667
