Patch to address issue 14392

scripts/performance/argument_parser.py

@@ -301,6 +301,14 @@ def bool_arg(arg):
         required=False,
         default=None,
     )
+    parser.add_argument(
+        "-fsdp_db",
+        "--use_fsdp_double_buffer",
+        help="Enable FSDP double buffer. Disabled by default",
+        type=bool_arg,
+        required=False,
+        default=None,
+    )
     parser.add_argument(
         "-ubr",
         "--use_user_buffer_registration",

scripts/performance/helpers.py

@@ -313,6 +313,12 @@ def set_perf_optimization_configs(
     if use_fsdp_double_buffer:
         assert use_mcore_fsdp == True, "use_fsdp_double_buffer requires use_mcore_fsdp to be True"
 
+    if use_user_buffer_registration:
+        assert use_mcore_fsdp == True, "use_user_buffer_registration requires use_mcore_fsdp to be True"
+        assert (
+            use_fsdp_double_buffer is not False
+        ), "use_fsdp_double_buffer cannot be False when use_user_buffer_registration is True"
+
     if use_mcore_fsdp and enable_cuda_graphs:
         logging.warning("Currently, cuda graphs are not supported with FSDP. Disabling cuda graphs.")
         enable_cuda_graphs = False
@@ -360,6 +366,7 @@ def set_primary_perf_configs(
     etp_size: Optional[int] = None,
     enable_cuda_graphs: bool = False,
     use_mcore_fsdp: bool = False,
+    use_fsdp_double_buffer: bool = False,
     use_user_buffer_registration: bool = False,
     use_sharp: bool = False,
     recompute_layers: int = 0,