diff --git a/src/plugin/impl/opr_footprint.cpp b/src/plugin/impl/opr_footprint.cpp
index a483b63e0c3cbf93702e9bbcbdebdba7f8b1a8a0..3cc33f509eb8e76fa7584d529bc673ecb3926e12 100644
--- a/src/plugin/impl/opr_footprint.cpp
+++ b/src/plugin/impl/opr_footprint.cpp
@@ -5,6 +5,7 @@
 #include "megbrain/opr/dnn/batch_norm.h"
 #include "megbrain/opr/dnn/convolution.h"
 #include "megbrain/opr/dnn/images2neibs.h"
+#include "megbrain/opr/dnn/layer_norm.h"
 #include "megbrain/opr/dnn/local.h"
 #include "megbrain/opr/dnn/lrn.h"
 #include "megbrain/opr/dnn/pooling.h"
@@ -13,6 +14,7 @@
 #include "megbrain/opr/imgproc.h"
 #include "megbrain/opr/indexing.h"
 #include "megbrain/opr/internal/indexing_helper.h"
+#include "megbrain/opr/internal/indexing_helper_sereg.h"
 #include "megbrain/opr/io.h"
 #include "megbrain/opr/misc.h"
 #include "megbrain/opr/nn_int.h"
@@ -20,6 +22,7 @@
 #include "megbrain/opr/standalone/nms_opr.h"
 #include "megbrain/opr/tensor_gen.h"
 #include "megbrain/opr/tensor_manip.h"
+#include "megbrain/serialization/opr_load_dump.h"
 #if MGB_ENABLE_JSON
 #include "megdnn/opr_param_json.h"
 #endif
@@ -488,12 +491,24 @@ uint64_t opr_footprint_func<opr::Host2DeviceCopy>(cg::OperatorNodeBase* opr) {
 template <class T>
 std::shared_ptr<json::Value> opr_param_json_func(cg::OperatorNodeBase* opr);
 
+template <class T>
+std::shared_ptr<json::Value> serial_param_json_func(
+        serialization::OprLoadContextRawPOD& context);
+
+#define REGISTE_SERIAL_PARAM_JSON_FUNC(cls)                                   \
+    template <>                                                               \
+    std::shared_ptr<json::Value> serial_param_json_func<opr::cls>(            \
+            serialization::OprLoadContextRawPOD & context) {                  \
+        return opr::opr_param_to_json(context.read_param<opr::cls::Param>()); \
+    }
+
 #define REGISTE_PARAM_JSON_FUNC(cls)                                             \
     template <>                                                                  \
     std::shared_ptr<json::Value> opr_param_json_func<opr::cls>(                  \
             cg::OperatorNodeBase * opr) {                                        \
         return opr::opr_param_to_json(opr->cast_final_safe<opr::cls>().param()); \
-    }
+    }                                                                            \
+    REGISTE_SERIAL_PARAM_JSON_FUNC(cls)
 
 REGISTE_PARAM_JSON_FUNC(Elemwise)
 REGISTE_PARAM_JSON_FUNC(ConvolutionForward)
@@ -544,12 +559,12 @@ REGISTE_PARAM_JSON_FUNC(GaussianRNG)
 REGISTE_PARAM_JSON_FUNC(Linspace)
 REGISTE_PARAM_JSON_FUNC(Eye)
 REGISTE_PARAM_JSON_FUNC(CvtColor)
+REGISTE_PARAM_JSON_FUNC(LayerNormBackward)
+REGISTE_PARAM_JSON_FUNC(AdaptivePoolingBackward)
+REGISTE_PARAM_JSON_FUNC(DropoutBackward)
 
-template <>
-std::shared_ptr<json::Value> opr_param_json_func<opr::Dimshuffle>(
-        cg::OperatorNodeBase* opr) {
-    auto param = opr->cast_final_safe<opr::Dimshuffle>().param();
-
+std::shared_ptr<json::Value> dimshuffle_param2json(
+        const opr::Dimshuffle::Param& param) {
     auto pattern = json::Array::make();
     for (size_t i = 0; i < param.pattern_len; i++)
         pattern->add(json::NumberInt::make(param.pattern[i]));
@@ -561,10 +576,19 @@ std::shared_ptr<json::Value> opr_param_json_func<opr::Dimshuffle>(
 }
 
 template <>
-std::shared_ptr<json::Value> opr_param_json_func<opr::AxisAddRemove>(
+std::shared_ptr<json::Value> opr_param_json_func<opr::Dimshuffle>(
         cg::OperatorNodeBase* opr) {
-    auto param = opr->cast_final_safe<opr::AxisAddRemove>().param();
+    auto param = opr->cast_final_safe<opr::Dimshuffle>().param();
+    return dimshuffle_param2json(param);
+}
+template <>
+std::shared_ptr<json::Value> serial_param_json_func<opr::Dimshuffle>(
+        serialization::OprLoadContextRawPOD& context) {
+    return dimshuffle_param2json(context.read_param<opr::Dimshuffle::Param>());
+}
 
+std::shared_ptr<json::Value> axis_add_remove_param2json(
+        const opr::AxisAddRemove::Param& param) {
     auto desc = json::Array::make();
     for (size_t i = 0; i < param.nr_desc; i++) {
         auto axisdesc = param.desc[i];
@@ -581,6 +605,19 @@ std::shared_ptr<json::Value> opr_param_json_func<opr::AxisAddRemove>(
     });
 }
 
+template <>
+std::shared_ptr<json::Value> opr_param_json_func<opr::AxisAddRemove>(
+        cg::OperatorNodeBase* opr) {
+    auto param = opr->cast_final_safe<opr::AxisAddRemove>().param();
+    return axis_add_remove_param2json(param);
+}
+
+template <>
+std::shared_ptr<json::Value> serial_param_json_func<opr::AxisAddRemove>(
+        serialization::OprLoadContextRawPOD& context) {
+    return axis_add_remove_param2json(context.read_param<opr::AxisAddRemove::Param>());
+}
+
 std::shared_ptr<json::Value> indexing_param_to_json(
         const std::vector<opr::indexing::AxisIndexer>& indices) {
     auto desc = json::Array::make();
@@ -596,12 +633,29 @@ std::shared_ptr<json::Value> indexing_param_to_json(
     return desc;
 }
 
-#define REGISTE_INDEXING_PARAM_JSON_FUNC(cls)                         \
-    template <>                                                       \
-    std::shared_ptr<json::Value> opr_param_json_func<opr::cls>(       \
-            cg::OperatorNodeBase * opr) {                             \
-        auto indices = opr->cast_final_safe<opr::cls>().index_desc(); \
-        return indexing_param_to_json(indices);                       \
+#define REGISTE_INDEXING_PARAM_JSON_FUNC(cls)                                  \
+    template <>                                                                \
+    std::shared_ptr<json::Value> opr_param_json_func<opr::cls>(                \
+            cg::OperatorNodeBase * opr) {                                      \
+        auto indices = opr->cast_final_safe<opr::cls>().index_desc();          \
+        return indexing_param_to_json(indices);                                \
+    }                                                                          \
+    template <>                                                                \
+    std::shared_ptr<json::Value> serial_param_json_func<opr::cls>(             \
+            serialization::OprLoadContextRawPOD & context) {                   \
+        auto indices = context.read_param<serialization::IndexDescMaskDump>(); \
+        auto desc = json::Array::make();                                       \
+        for (size_t i = 0; i < indices.nr_item; i++) {                         \
+            auto&& index = indices.items[i];                                   \
+            desc->add(json::Object::make({                                     \
+                    {"axis", json::NumberInt::make(index.axis)},               \
+                    {"begin", json::NumberInt::make(index.begin)},             \
+                    {"end", json::NumberInt::make(index.end)},                 \
+                    {"step", json::NumberInt::make(index.step)},               \
+                    {"idx", json::NumberInt::make(index.idx)},                 \
+            }));                                                               \
+        }                                                                      \
+        return desc;                                                           \
     }
 
 REGISTE_INDEXING_PARAM_JSON_FUNC(Subtensor);
@@ -617,14 +671,11 @@ REGISTE_INDEXING_PARAM_JSON_FUNC(BatchedMeshIndexing);
 REGISTE_INDEXING_PARAM_JSON_FUNC(BatchedIncrMeshIndexing);
 REGISTE_INDEXING_PARAM_JSON_FUNC(BatchedSetMeshIndexing);
 
-template <>
-std::shared_ptr<json::Value> opr_param_json_func<opr::Reshape>(
-        cg::OperatorNodeBase* opr) {
+std::shared_ptr<json::Value> reshape_param2json(const opr::Reshape::Param& param) {
     auto desc = json::Array::make();
-    auto axis_param = opr->cast_final_safe<opr::Reshape>().param();
-    if (axis_param.axis != axis_param.MAX_NDIM) {
+    if (param.axis != param.MAX_NDIM) {
         return json::Object::make({
-                {"axis", json::NumberInt::make(axis_param.axis)},
+                {"axis", json::NumberInt::make(param.axis)},
         });
     } else {
         return json::Object::make();
@@ -632,13 +683,24 @@ std::shared_ptr<json::Value> opr_param_json_func<opr::Reshape>(
 }
 
 template <>
-std::shared_ptr<json::Value> opr_param_json_func<opr::GetVarShape>(
+std::shared_ptr<json::Value> opr_param_json_func<opr::Reshape>(
         cg::OperatorNodeBase* opr) {
+    auto axis_param = opr->cast_final_safe<opr::Reshape>().param();
+    return reshape_param2json(axis_param);
+}
+
+template <>
+std::shared_ptr<json::Value> serial_param_json_func<opr::Reshape>(
+        serialization::OprLoadContextRawPOD& context) {
+    return reshape_param2json(context.read_param<opr::Reshape::Param>());
+}
+
+std::shared_ptr<json::Value> getvarshape_param2json(
+        const opr::GetVarShape::Param& param) {
     auto desc = json::Array::make();
-    auto axis_param = opr->cast_final_safe<opr::GetVarShape>().param();
-    if (axis_param.axis != axis_param.MAX_NDIM) {
+    if (param.axis != param.MAX_NDIM) {
         return json::Object::make({
-                {"axis", json::NumberInt::make(axis_param.axis)},
+                {"axis", json::NumberInt::make(param.axis)},
         });
     } else {
         return json::Object::make();
@@ -646,15 +708,39 @@ std::shared_ptr<json::Value> opr_param_json_func<opr::GetVarShape>(
 }
 
 template <>
-std::shared_ptr<json::Value> opr_param_json_func<opr::standalone::NMSKeep>(
+std::shared_ptr<json::Value> opr_param_json_func<opr::GetVarShape>(
         cg::OperatorNodeBase* opr) {
-    auto nms_param = opr->cast_final_safe<opr::standalone::NMSKeep>().param();
+    auto axis_param = opr->cast_final_safe<opr::GetVarShape>().param();
+    return getvarshape_param2json(axis_param);
+}
+
+template <>
+std::shared_ptr<json::Value> serial_param_json_func<opr::GetVarShape>(
+        serialization::OprLoadContextRawPOD& context) {
+    return getvarshape_param2json(context.read_param<opr::GetVarShape::Param>());
+}
+
+std::shared_ptr<json::Value> nmskeep_param2json(
+        const opr::standalone::NMSKeep::Param& param) {
     return json::Object::make({
-            {"iou_thresh", json::Number::make(nms_param.iou_thresh)},
-            {"max_output", json::Number::make(nms_param.max_output)},
+            {"iou_thresh", json::Number::make(param.iou_thresh)},
+            {"max_output", json::Number::make(param.max_output)},
     });
 }
 
+template <>
+std::shared_ptr<json::Value> opr_param_json_func<opr::standalone::NMSKeep>(
+        cg::OperatorNodeBase* opr) {
+    auto nms_param = opr->cast_final_safe<opr::standalone::NMSKeep>().param();
+    return nmskeep_param2json(nms_param);
+}
+
+template <>
+std::shared_ptr<json::Value> serial_param_json_func<opr::standalone::NMSKeep>(
+        serialization::OprLoadContextRawPOD& context) {
+    return nmskeep_param2json(context.read_param<opr::standalone::NMSKeep::Param>());
+}
+
 #endif  // MGB_ENABLE_JSON
 
 }  // namespace
@@ -675,6 +761,9 @@ void OprFootprint::add_single_param_json() {
     auto&& record = m_type2param_json.emplace(
             OprType::typeinfo(), opr_param_json_func<OprType>);
     mgb_assert(record.second, "duplicate opr typeinfo");
+    auto&& record1 = m_type2serialparam_json.emplace(
+            OprType::typeinfo(), serial_param_json_func<OprType>);
+    mgb_assert(record1.second, "duplicate opr typeinfo");
 }
 #endif
 
@@ -767,6 +856,9 @@ void OprFootprint::init_all_footprints() {
     add_single_param_json<opr::Eye>();
     add_single_param_json<opr::standalone::NMSKeep>();
     add_single_param_json<opr::CvtColor>();
+    add_single_param_json<opr::LayerNormBackward>();
+    add_single_param_json<opr::AdaptivePoolingBackward>();
+    add_single_param_json<opr::DropoutBackward>();
 
 #endif
 }
@@ -814,6 +906,15 @@ std::shared_ptr<json::Value> OprFootprint::get_param_json(cg::OperatorNodeBase*
     return json::Object::make();
 }
 
+std::shared_ptr<json::Value> OprFootprint::get_serial_param_json(
+        Typeinfo* type, serialization::OprLoadContextRawPOD& context) {
+    auto param_trait = m_type2serialparam_json.find(type);
+    if (param_trait != m_type2serialparam_json.end()) {
+        return (param_trait->second)(context);
+    }
+    return json::Object::make();
+}
+
 std::shared_ptr<json::Value> OprFootprint::Result::to_json() const {
     using namespace json;
     std::shared_ptr<Value> comp;
diff --git a/src/plugin/include/megbrain/plugin/opr_footprint.h b/src/plugin/include/megbrain/plugin/opr_footprint.h
index 48ba4ed4fe393992c887e1230b8056a47891105c..193c1cded33517c00c96655c03da0c16c85795c4 100644
--- a/src/plugin/include/megbrain/plugin/opr_footprint.h
+++ b/src/plugin/include/megbrain/plugin/opr_footprint.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "megbrain/graph.h"
+#include "megbrain/serialization/opr_load_dump.h"
 
 namespace mgb {
 
@@ -14,7 +15,10 @@ class OprFootprint {
 #if MGB_ENABLE_JSON
     using ParamJsonTrait =
             thin_function<std::shared_ptr<json::Value>(cg::OperatorNodeBase*)>;
+    using SerialParamJsonTrait = thin_function<std::shared_ptr<json::Value>(
+            serialization::OprLoadContextRawPOD&)>;
     ThinHashMap<Typeinfo*, ParamJsonTrait> m_type2param_json;
+    ThinHashMap<Typeinfo*, SerialParamJsonTrait> m_type2serialparam_json;
 #endif
 
     //! add single footprint calculator for associated opr type.
@@ -70,6 +74,8 @@ public:
 #if MGB_ENABLE_JSON
     MGE_WIN_DECLSPEC_FUC std::shared_ptr<json::Value> get_param_json(
             cg::OperatorNodeBase* opr);
+    MGE_WIN_DECLSPEC_FUC std::shared_ptr<json::Value> get_serial_param_json(
+            Typeinfo* type, serialization::OprLoadContextRawPOD& context);
     //! get opr foot print and graph exec info
     //! the function will recompile graph, AsyncExecutable compiled before will
     //! be invalid