init nsys default (#1271)

Signed-off-by: Malay Nagda <[email protected]>

Author: malay-nagda

src/megatron/bridge/training/config.py

@@ -1104,7 +1104,7 @@ class ConfigContainer(Container):
     ft: Optional[FaultToleranceConfig] = None
     straggler: Optional[StragglerDetectionConfig] = None
     nvrx_straggler: Optional[NVRxStragglerDetectionConfig] = None
-    profiling: Optional[ProfilingConfig] = None
+    profiling: ProfilingConfig = field(default_factory=ProfilingConfig)
     peft: Optional[PEFT] = None
     comm_overlap: Optional[CommOverlapConfig] = None
     mixed_precision: Optional[Union[MixedPrecisionConfig, str]] = None