* embedding is slow
* failing
* float is fine
* null
* it fails
* simplify embedding with broadcasting
* ATOMIC_ADD incoming
* min change
* simpler test
* better test
* fix test
* real test
* simpler
* cleanups
* types and names
* _zero_kernel
* grad multi
* hack
* none
* multi unshard
* more for call
* don't tag in call
* good
* call_multi
* call_multi wow claude is useless
* embedding backward mutli test
* test passes
* fix as_param
* shape_to_shape_arg
* add clip
* before cast
* fix spec=2, use atomics