JAX v0.7.0

• New features:

  • Added jax.P which is an alias for jax.sharding.PartitionSpec.
  • Added jax.tree.reduce_associative.

• Breaking changes:

  • JAX is migrating from GSPMD to Shardy by default. See the
    migration guide
    for more information.
  • JAX autodiff is switching to using direct linearization by default (instead of
    implementing linearization via JVP and partial eval).
    See migration guide
    for more information.
  • jax.stages.OutInfo has been replaced with jax.ShapeDtypeStruct.
  • jax.jit now requires fun to be passed by position, and additional
    arguments to be passed by keyword. Doing otherwise will result in an error
    starting in v0.7.x. This raised a DeprecationWarning in v0.6.x.
  • The minimum Python version is now 3.11. 3.11 will remain the minimum
    supported version until July 2026.
  • Layout API renames:
    • Layout, .layout, .input_layouts and .output_layouts have been
      renamed to Format, .format, .input_formats and .output_formats
    • DeviceLocalLayout, .device_local_layout have been renamed to Layout
      and .layout
  • jax.experimental.shard module has been deleted and all the APIs have been
    moved to the jax.sharding endpoint. So use jax.sharding.reshard,
    jax.sharding.auto_axes and jax.sharding.explicit_axes instead of their
    experimental endpoints.
  • lax.infeed and lax.outfeed were removed, after being deprecated in
    JAX 0.6. The transfer_to_infeed and transfer_from_outfeed methods were
    also removed the Device objects.
  • The jax.extend.core.primitives.pjit_p primitive has been renamed to
    jit_p, and its name attribute has changed from "pjit" to "jit".
    This affects the string representations of jaxprs. The same primitive is no
    longer exported from the jax.experimental.pjit module.
  • The (undocumented) function jax.extend.backend.add_clear_backends_callback
    has been removed. Users should use jax.extend.backend.register_backend_cache
    instead.

• Deprecations:

  • {obj}jax.dlpack.SUPPORTED_DTYPES is deprecated; please use the new
    jax.dlpack.is_supported_dtype function.
  • jax.scipy.special.sph_harm has been deprecated following a similar
    deprecation in SciPy; use jax.scipy.special.sph_harm_y instead.
  • From {mod}jax.interpreters.xla, the previously deprecated symbols
    abstractify and pytype_aval_mappings have been removed.
  • jax.interpreters.xla.canonicalize_dtype is deprecated. For
    canonicalizing dtypes, prefer jax.dtypes.canonicalize_dtype.
    For checking whether an object is a valid jax input, prefer
    jax.core.valid_jaxtype.
  • From {mod}jax.core, the previously deprecated symbols AxisName,
    ConcretizationTypeError, axis_frame, call_p, closed_call_p,
    get_type, trace_state_clean, typematch, and typecheck have been
    removed.
  • From {mod}jax.lib.xla_client, the previously deprecated symbols
    DeviceAssignment, get_topology_for_devices, and mlir_api_version
    have been removed.
  • jax.extend.ffi was removed after being deprecated in v0.5.0.
    Use {mod}jax.ffi instead.
  • jax.lib.xla_bridge.get_compile_options is deprecated, and replaced by
    jax.extend.backend.get_compile_options.