Test cases are still frequently skipped due to lack of CompileOptions
support, but the skip/run behavior does not seem to meaningfully change
compared to a clean checkout. This was verified by inserting an exception
in place of unittest.SkipTest.
PiperOrigin-RevId: 529437419
Start off with two functions: one for retrieving the attached topology, and the other for producing a mesh from the topology (modeling how `mesh_utils` might be adapted).
Use as:
```
topo = jax.topologies.get_attached_topology() // Discovers local devices.
mesh = jax.topologies.make_mesh(topo, mesh_shape, axis_names) # see mesh_utils.create_device_mesh.
```
Co-authored-by: Roy Frostig <frostig@google.com>
PiperOrigin-RevId: 524909149
