Ljj UdZddlZddlZddlmZmZddlmZddlm Z m Z ddl Z ddl m Z ejeZGdde Zee j"ee j&gefZiZeeedzfed <iZeeefed < dd edzd edzd eedede ffdZej6edZej6edZd eezdefdZddeefdZej@ddZ!ej@ddZ"d ede#fdZ$y)a This module implements TorchDynamo's backend registry system for managing compiler backends. The registry provides a centralized way to register, discover and manage different compiler backends that can be used with torch.compile(). It handles: - Backend registration and discovery through decorators and entry points - Lazy loading of backend implementations - Lookup and validation of backend names - Categorization of backends using tags (debug, experimental, etc.) Key components: - CompilerFn: Type for backend compiler functions that transform FX graphs - _BACKENDS: Registry mapping backend names to entry points - _COMPILER_FNS: Registry mapping backend names to loaded compiler functions Example usage: @register_backend def my_compiler(fx_graph, example_inputs): # Transform FX graph into optimized implementation return compiled_fn # Use registered backend torch.compile(model, backend="my_compiler") The registry also supports discovering backends through setuptools entry points in the "torch_dynamo_backends" group. Example: ``` setup.py --- from setuptools import setup setup( name='my_torch_backend', version='0.1', packages=['my_torch_backend'], entry_points={ 'torch_dynamo_backends': [ # name = path to entry point of backend implementation 'my_compiler = my_torch_backend.compiler:my_compiler_function', ], }, ) ``` ``` my_torch_backend/compiler.py --- def my_compiler_function(fx_graph, example_inputs): # Transform FX graph into optimized implementation return compiled_fn ``` Using `my_compiler` backend: ``` import torch model = ... # Your PyTorch model optimized_model = torch.compile(model, backend="my_compiler") ``` N)CallableSequence) EntryPoint)AnyProtocol)fxcNeZdZdejdeejdffdZy) CompiledFnargsreturn.cy)N)selfr s ^/var/www/html/ia-enhanced/venv/lib/python3.12/site-packages/torch/_dynamo/backends/registry.py__call__zCompiledFn.__call__KsN)__name__ __module__ __qualname__torchTensortuplerrrrr r Js!LellLuU\\35F/GLrr _BACKENDS _COMPILER_FNS compiler_fnnametagsr .c|tjt||St|sJ|xs |j}|t vs Jd||t vr dt |<|t |<t||_|S)a Decorator to add a given compiler to the registry to allow calling `torch.compile` with string shorthand. Note: for projects not imported by default, it might be easier to pass a function directly as a backend and not use a string. Args: compiler_fn: Callable taking a FX graph and fake tensor inputs name: Optional name, defaults to `compiler_fn.__name__` tags: Optional set of string tags to categorize backend with N)rrzduplicate name: ) functoolspartialregister_backendcallablerrrr_tags)rrrs rr!r!Ts   !14HH K   ';''D } $?(8&?? $)# $%M$d K r)debug)r) experimentalct|tr`|tvr t|tvrddlm}|||t vr&t|}|t|j|t |}|S)z#Expand backend strings to functions)InvalidBackend)r)rr) isinstancestrr _lazy_importexcr(rr!load)rr( entry_points rlookup_backendr/wsj+s# i ' N i ' , k2 2 m +#K0K& [-=-=-?kR#K0 rctt|xsd}tDcgc].}|tvs"|j t|j s|0}}t |Scc}w)za Return valid strings that can be passed to: torch.compile(..., backend="name") r)r+setrr intersectionr#sorted) exclude_tagsexclude_tags_setrbackendss r list_backendsr7sk N<-2.  } $,,]4-@-F-FG H (  s3A"cTddlm}ddlm}||ddlm}|Jt y)Nr')r6)import_submodule)dynamo_minifier_backend)r6utilsr9repro.after_dynamor:_discover_entrypoint_backends)r6r9r:s rr+r+s%(X< " .. .!#rcddlm}d}||}|jDcic]}||| }}|D]}||t|<ycc}w)Nr) entry_pointstorch_dynamo_backends)group)importlib.metadatar@namesr)r@ group_nameepsreps_dict backend_names rr>r>sX0(J Z (C,/II6Dc$i6H6 9 "*<"8 ,97s Act|tjvryt|dr|j}|t vs|tvryt|dr |j tjvSy)z Check if the given compiler function is a registered backend. Custom backends (user-provided callables not in the registry) return False. T compiler_namerF)r+rvalueshasattrrJrr)rrJs r_is_registered_backendrMsq Nm**,,{O,#11 I %-)G{M*&&-*>*>*@@@ r)NNr))r$r%)r N)%__doc__rloggingcollections.abcrrrCrtypingrrrr getLoggerrlogr GraphModulelistr CompilerFnrdictr*__annotations__rr!r register_debug_backendregister_experimental_backendr/r7cacher+r>boolrMrrrr]sy:x.) g!MMr~~tELL'9:JF G *, 4Z$&& ',') tCO$)&*d" * 3-c3h :+**+;*M 1 1 1,! j 0Z&T#Y$  $ $  9 9 tr