add configurable prefix (#2625)

Summary:

X-link: pytorch/pytorch#157678

# Why

make experiments easier to find

# What

- dynamo config to provide a prefix
- use the prefix when sending data to scuba through the self.id_ field

Reviewed By: stashuk-olek

Differential Revision: D77837550

Author: coconutruben

userbenchmark/dynamo/dynamobench/_dynamo/utils.py

@@ -1713,9 +1713,15 @@ def get_event_data(self) -> dict[str, Any]:
 
     def __init__(self):
         self.tls = threading.local()
+
+        from . import config
+
         # Generate a unique id for this logger, which we can use in scuba to filter down
         # to a single python run.
-        self.id_ = str(uuid.uuid4())
+        if config.pt2_compile_id_prefix:
+            self.id_ = f"{config.pt2_compile_id_prefix}-{uuid.uuid4()}"
+        else:
+            self.id_ = str(uuid.uuid4())
 
         # TODO: log to init/id tlparse after I add support for it
         log.info("ChromiumEventLogger initialized with id %s", self.id_)