removing the fuse distributed ops lowering pass for tegra platforms (#3411)

Author: apbose

py/torch_tensorrt/dynamo/lowering/passes/_aten_lowering_pass.py

@@ -3,6 +3,7 @@
 
 import torch
 from torch_tensorrt.dynamo._settings import CompilationSettings
+from torch_tensorrt.dynamo.utils import is_tegra_platform
 
 from .accumulate_fp32_matmul import accumulate_fp32_matmul
 from .constant_folding import constant_fold
@@ -15,18 +16,20 @@
 from .repair_input_as_output import repair_input_as_output
 from .replace_max_pool_with_indices import replace_max_pool_with_indices
 
-ATEN_POST_LOWERING_PASSES = DynamoPassManager.build_from_passlist(
-    [
-        remove_input_alias_fixing_clones,
-        constant_fold,
-        repair_input_as_output,
-        fuse_prims_broadcast,
-        fuse_distributed_ops,
-        replace_max_pool_with_indices,
-        remove_assert_nodes,
-        accumulate_fp32_matmul,
-    ]
-)
+pass_list = [
+    remove_input_alias_fixing_clones,
+    constant_fold,
+    repair_input_as_output,
+    fuse_prims_broadcast,
+    replace_max_pool_with_indices,
+    remove_assert_nodes,
+    accumulate_fp32_matmul,
+]
+
+if not is_tegra_platform():
+    pass_list.append(fuse_distributed_ops)
+
+ATEN_POST_LOWERING_PASSES = DynamoPassManager.build_from_passlist(pass_list)
 
 ATEN_PRE_LOWERING_PASSES = DynamoPassManager.build_from_passlist(
     [

py/torch_tensorrt/dynamo/utils.py

@@ -806,3 +806,9 @@ def get_output_dtypes(output: Any, truncate_doulbe: bool = False) -> List[dtype]
             f"got unexpected type {type(output)}, expected type is a torch.fx.node.Node or a tuple/list of torch.fx.node.Node"
         )
     return output_dtypes
+
+
+def is_tegra_platform() -> bool:
+    if torch.cuda.get_device_capability() in [(8, 7), (7, 2)]:
+        return True
+    return False