rename sl to strobelight (#124455)

Summary:
TORCH_COMPILE_SL_PROFILE ->TORCH_COMPILE_STROBELIGHT
SL_MAX_STACK_LENGTH -> COMPILE_STROBELIGHT_MAX_STACK_LENGTH
SL_MAX_PROFILE_TIME -> COMPILE_STROBELIGHT_MAX_PROFILE_TIME
profile_with_sl() -> strobelight()
compiletime_sl_profile_meta() -> compiletime_strobelight_meta()

Test Plan:
1. run and verify
```
TORCH_COMPILE_STROBELIGHT=TRUE buck2 run  @//mode/inplace  @//mode/opt  //caffe2/fb/strobelight:compiletime_profiler_example
```
2. run and verify
```
buck2 run  @//mode/inplace  @//mode/opt  //caffe2/fb/strobelight:function_profiler_example --local-only
```
3. run and verify truncated stack for
```
TORCH_COMPILE_STROBELIGHT=TRUE COMPILE_STROBELIGHT_MAX_STACK_LENGTH=1 buck2 run  @//mode/inplace  @//mode/opt  //caffe2/fb/strobelight:compiletime_profiler_example
```
4. add infinite loop in _verify and verify samples for
```
COMPILE_STROBELIGHT_MAX_PROFILE_TIME=30 TORCH_COMPILE_STROBELIGHT=TRUE buck2 run  @//mode/inplace  @//mode/opt  //caffe2/fb/strobelight:compiletime_profiler_example
```

Reviewed By: oulgen

Differential Revision: D56327139

Pull Request resolved: #124455
Approved by: https://github.com/oulgen

torch/_dynamo/convert_frame.py

@@ -28,7 +28,7 @@
 import torch._logging
 from torch._guards import compile_context, CompileContext, CompileId, tracing
 from torch._logging import structured
-from torch._utils_internal import compiletime_sl_profile_meta, signpost_event
+from torch._utils_internal import compiletime_strobelight_meta, signpost_event
 from torch.fx.experimental.symbolic_shapes import (
     ConstraintViolationError,
     GuardOnDataDependentSymNode,
@@ -452,7 +452,7 @@ def register_bytecode_hook(hook: BytecodeHook) -> RemovableHandle:
     return handle
 
 
-@compiletime_sl_profile_meta(phase_name="_compile")
+@compiletime_strobelight_meta(phase_name="_compile")
 @_use_lazy_graph_module(config.use_lazy_graph_module)
 @maybe_cprofile
 def _compile(

torch/_inductor/compile_fx.py

@@ -36,7 +36,7 @@
 from torch._logging import trace_structured
 from torch._ops import OpOverload
 from torch._subclasses.fake_tensor import FakeTensor
-from torch._utils_internal import compiletime_sl_profile_meta
+from torch._utils_internal import compiletime_strobelight_meta
 from torch.fx.experimental.symbolic_shapes import free_unbacked_symbols
 from torch.fx.passes.fake_tensor_prop import FakeTensorProp
 
@@ -1349,7 +1349,7 @@ def partition_fn(graph, joint_inputs, **kwargs):
             graph, joint_inputs, **kwargs, compiler="inductor"
         )
 
-    @compiletime_sl_profile_meta(phase_name="bw_compiler")
+    @compiletime_strobelight_meta(phase_name="bw_compiler")
     @dynamo_utils.dynamo_timed
     @dynamo_utils.maybe_cprofile
     def bw_compiler(model: torch.fx.GraphModule, example_inputs: List[torch.Tensor]):

torch/_utils_internal.py

@@ -63,15 +63,15 @@ def throw_abstract_impl_not_imported_error(opname, module, context):
 
 
 # Meta only, act as nop otherwise.
-def compiletime_sl_profile_meta(phase_name):
-    def compiletime_sl_profile_inner(function):
+def compiletime_strobelight_meta(phase_name):
+    def compiletime_strobelight_meta_inner(function):
         @functools.wraps(function)
         def wrapper_function(*args, **kwargs):
             return function(*args, **kwargs)
 
         return wrapper_function
 
-    return compiletime_sl_profile_inner
+    return compiletime_strobelight_meta_inner
 
 
 # Meta only, see