diff --git a/hta/common/trace_parser.py b/hta/common/trace_parser.py
index 147df25..2cea3f4 100644
--- a/hta/common/trace_parser.py
+++ b/hta/common/trace_parser.py
@@ -23,7 +23,12 @@
 
 from hta.configs.config import logger
 from hta.configs.default_values import ValueType
-from hta.configs.parser_config import AttributeSpec, ParserBackend, ParserConfig
+from hta.configs.parser_config import (
+    AttributeSpec,
+    DEFAULT_PARSE_VERSION,
+    ParserBackend,
+    ParserConfig,
+)
 from hta.utils.utils import normalize_gpu_stream_numbers
 
 # from memory_profiler import profile
@@ -260,7 +265,16 @@ def _compress_df(
         )
         # args_to_keep = args_to_keep.union(counter_names)
         cfg.add_args(
-            [AttributeSpec(name, name, ValueType.Int, -1) for name in counter_names]
+            [
+                AttributeSpec(
+                    name,
+                    name,
+                    ValueType.Int,
+                    -1,
+                    min_supported_version=DEFAULT_PARSE_VERSION,
+                )
+                for name in counter_names
+            ]
         )
         logger.info(f"counter_names={counter_names}")
         logger.info(f"args={cfg.get_args()}")
diff --git a/hta/configs/default_values.py b/hta/configs/default_values.py
index 1600c45..3b483d8 100644
--- a/hta/configs/default_values.py
+++ b/hta/configs/default_values.py
@@ -2,6 +2,7 @@
 # This source code is licensed under the MIT license found in the
 # LICENSE file in the root directory of this source tree.
 
+import re
 from enum import Enum
 from typing import Dict, List, NamedTuple, Union
 
@@ -17,6 +18,24 @@
 MAX_NUM_PROCESSES: int = 32
 
 
+class YamlVersion(NamedTuple):
+    major: int
+    minor: int
+    patch: int
+
+    def get_version_str(self) -> str:
+        return f"{self.major}.{self.minor}.{self.patch}"
+
+    @staticmethod
+    def from_string(version_str: str) -> "YamlVersion":
+        pattern = r"^(\d+)\.(\d+)\.(\d+)$"
+        match = re.match(pattern, version_str)
+        if not match:
+            raise ValueError(f"Invalid version string: {version_str}")
+        major, minor, patch = map(int, match.groups())
+        return YamlVersion(major, minor, patch)
+
+
 class ValueType(Enum):
     """ValueType enumerates the possible data types for the attribute values."""
 
@@ -40,6 +59,9 @@ class AttributeSpec(NamedTuple):
     raw_name: str
     value_type: ValueType
     default_value: Union[int, float, str, object]
+    # This property allows for addition of fields that do
+    # not break backwards compatibility with other fields (minor version bumps).
+    min_supported_version: YamlVersion
 
 
 class EventArgs(NamedTuple):
diff --git a/hta/configs/event_args_formats/event_args_1.0.0.yaml b/hta/configs/event_args_formats/event_args_1.0.0.yaml
index 5c2c14b..216bb54 100644
--- a/hta/configs/event_args_formats/event_args_1.0.0.yaml
+++ b/hta/configs/event_args_formats/event_args_1.0.0.yaml
@@ -46,6 +46,12 @@ AVAILABLE_ARGS:
     raw_name: kernel_backend
     value_type: String
     default_value: ""
+  cpu_op::kernel_hash:
+    name: kernel_hash
+    raw_name: kernel_hash
+    value_type: String
+    default_value: ""
+    min_supported_version: "1.1.0"
   correlation::cbid:
     name: cbid
     raw_name: cbid
@@ -166,6 +172,16 @@ AVAILABLE_ARGS:
     raw_name: Out msg nelems
     value_type: Int
     default_value: 0
+  nccl::in_msg_size:
+    name: in_msg_size
+    raw_name: In msg size
+    value_type: Int
+    default_value: 0
+  nccl::out_msg_size:
+    name: out_msg_size
+    raw_name: Out msg size
+    value_type: Int
+    default_value: 0
   nccl::group_size:
     name: group_size
     raw_name: Group size
diff --git a/hta/configs/event_args_yaml_parser.py b/hta/configs/event_args_yaml_parser.py
index 4552b6b..2a902cf 100644
--- a/hta/configs/event_args_yaml_parser.py
+++ b/hta/configs/event_args_yaml_parser.py
@@ -3,32 +3,13 @@
 # pyre-strict
 
 
-import re
 from functools import lru_cache
 from pathlib import Path
-from typing import Callable, Dict, List, NamedTuple
+from typing import Callable, Dict, List
 
 import yaml
 
-from hta.configs.default_values import AttributeSpec, EventArgs, ValueType
-
-
-class YamlVersion(NamedTuple):
-    major: int
-    minor: int
-    patch: int
-
-    def get_version_str(self) -> str:
-        return f"{self.major}.{self.minor}.{self.patch}"
-
-    @staticmethod
-    def from_string(version_str: str) -> "YamlVersion":
-        pattern = r"^(\d+)\.(\d+)\.(\d+)$"
-        match = re.match(pattern, version_str)
-        if not match:
-            raise ValueError(f"Invalid version string: {version_str}")
-        major, minor, patch = map(int, match.groups())
-        return YamlVersion(major, minor, patch)
+from hta.configs.default_values import AttributeSpec, EventArgs, ValueType, YamlVersion
 
 
 # Yaml version will be mapped to the yaml files defined under the "event_args_formats" folder
@@ -110,6 +91,11 @@ def parse_value_type(value: str) -> ValueType:
             raw_name=value["raw_name"],
             value_type=parse_value_type(value["value_type"]),
             default_value=value["default_value"],
+            min_supported_version=(
+                YamlVersion.from_string(value["min_supported_version"])
+                if "min_supported_version" in value
+                else version
+            ),
         )
         for k, value in yaml_content["AVAILABLE_ARGS"].items()
     }
diff --git a/hta/configs/parser_config.py b/hta/configs/parser_config.py
index b9b3212..dbcf0dd 100644
--- a/hta/configs/parser_config.py
+++ b/hta/configs/parser_config.py
@@ -149,6 +149,13 @@ def set_global_parser_config_version(version: YamlVersion) -> None:
         ).ARGS_COMMUNICATION
         ParserConfig.ARGS_DEFAULT = parse_event_args_yaml(version).ARGS_DEFAULT
 
+    @staticmethod
+    def show_available_args():
+        from pprint import pprint
+
+        global AVAILABLE_ARGS
+        pprint(AVAILABLE_ARGS)
+
 
 # Define a global ParserConfig variable for internal use. To access this variable,
 # Clients should use ParserConfig.get_default_cfg and ParserConfig.set_default_cfg.
diff --git a/tests/data/triton_example/triton_example.json.gz b/tests/data/triton_example/triton_example.json.gz
index 0935c73..36347a1 100644
Binary files a/tests/data/triton_example/triton_example.json.gz and b/tests/data/triton_example/triton_example.json.gz differ
diff --git a/tests/test_trace_parse.py b/tests/test_trace_parse.py
index e8a915e..ef73bda 100644
--- a/tests/test_trace_parse.py
+++ b/tests/test_trace_parse.py
@@ -356,6 +356,7 @@ def test_triton_trace(self) -> None:
         trace_df = self.triton_t.get_trace(0)
         self.assertGreater(len(trace_df), 0)
         self.assertTrue("kernel_backend" in trace_df.columns)
+        self.assertTrue("kernel_hash" in trace_df.columns)
 
         triton_cpu_ops = trace_df[trace_df.kernel_backend.ne("")]
         # We have one triton cpu op
@@ -365,6 +366,10 @@ def test_triton_trace(self) -> None:
         self.assertEqual(triton_op["s_name"], "triton_poi_fused_add_cos_sin_0")
         self.assertEqual(triton_op["s_cat"], "cpu_op")
         self.assertEqual(triton_op["kernel_backend"], "triton")
+        self.assertEqual(
+            triton_op["kernel_hash"],
+            "cqaokwf2bph4egogzevc22vluasiyuui4i54zpemp6knbsggfbuu",
+        )
 
 
 if __name__ == "__main__":  # pragma: no cover