diff --git a/paddle/fluid/framework/ir/ipu/popart_canonicalization_pass.cc b/paddle/fluid/framework/ir/ipu/popart_canonicalization_pass.cc
index c97b7fd5bcb0cb7b6a4a49725d15e23832a9308f..d2d76f9a9a2f92762f77ebc5e5f1ecb7d4d55bcb 100644
--- a/paddle/fluid/framework/ir/ipu/popart_canonicalization_pass.cc
+++ b/paddle/fluid/framework/ir/ipu/popart_canonicalization_pass.cc
@@ -16,7 +16,6 @@
 
 #include "paddle/fluid/framework/ir/pass_tester_helper.h"
 #include "paddle/fluid/platform/device/ipu/popart_canonicalization/canonicalization_utils.h"
-#include "paddle/fluid/platform/device/ipu/popart_canonicalization/post_canonicalization.h"
 
 namespace paddle {
 namespace framework {
diff --git a/paddle/fluid/platform/device/ipu/popart_canonicalization/activation_ops.cc b/paddle/fluid/platform/device/ipu/popart_canonicalization/activation_ops.cc
index 5793c4c0e3ca69ec6eb9b7161dd62f95d0ba314a..fc2f1e476b92eea0e8d2cfa3a53c5e1a40b008c6 100644
--- a/paddle/fluid/platform/device/ipu/popart_canonicalization/activation_ops.cc
+++ b/paddle/fluid/platform/device/ipu/popart_canonicalization/activation_ops.cc
@@ -48,7 +48,37 @@ Node *sqrt_handler(Graph *graph, Node *node) {
 }
 
 Node *gelu_handler(Graph *graph, Node *node) {
-  return activation_op_handler(graph, node, "popart_gelu_v2");
+  auto *op = node->Op();
+  auto approximate_ = BOOST_GET_CONST(bool, op->GetAttr("approximate"));
+  if (approximate_) {
+    return activation_op_handler(graph, node, "popart_gelu_v2");
+  } else {
+    auto sqrt2 = CreateConst(graph, node, {}, {},
+                             {{"value", std::vector<float>{1.4142135623730951}},
+                              {"dims", std::vector<int64_t>{1}},
+                              {"dtype", GetOutputVarDtype(node)}});
+    auto zero_point_five =
+        CreateConst(graph, node, {}, {}, {{"value", std::vector<float>{0.5}},
+                                          {"dims", std::vector<int64_t>{1}},
+                                          {"dtype", GetOutputVarDtype(node)}});
+    auto one =
+        CreateConst(graph, node, {}, {}, {{"value", std::vector<float>{1}},
+                                          {"dims", std::vector<int64_t>{1}},
+                                          {"dtype", GetOutputVarDtype(node)}});
+    auto div =
+        CreateBaseOp(graph, node, "popart_div",
+                     {GetInputVarNode("X", node), sqrt2->outputs[0]}, {}, {});
+    auto erf =
+        CreateBaseOp(graph, node, "popart_erf", {div->outputs[0]}, {}, {});
+    auto add = CreateBaseOp(graph, node, "popart_add",
+                            {erf->outputs[0], one->outputs[0]}, {}, {});
+    auto mul1 =
+        CreateBaseOp(graph, node, "popart_mul",
+                     {GetInputVarNode("X", node), add->outputs[0]}, {}, {});
+    return CreateBaseOp(graph, node, "popart_mul",
+                        {mul1->outputs[0], zero_point_five->outputs[0]},
+                        {GetOutputVarNode("Out", node)}, {});
+  }
 }
 
 Node *log_softmax_handler(Graph *graph, Node *node) {
diff --git a/paddle/fluid/platform/device/ipu/popart_canonicalization/canonicalization_utils.cc b/paddle/fluid/platform/device/ipu/popart_canonicalization/canonicalization_utils.cc
index d46fc55ec6ce0de12e2a610be1937f9e3a948c02..3d22f75d345d6a2376788cddfd4f4c8dbddcbee2 100644
--- a/paddle/fluid/platform/device/ipu/popart_canonicalization/canonicalization_utils.cc
+++ b/paddle/fluid/platform/device/ipu/popart_canonicalization/canonicalization_utils.cc
@@ -180,6 +180,17 @@ const bool is_float_equal(float a, float b, float eps) {
   return std::fabs(a - b) <= eps;
 }
 
+const int GetOutputVarDtype(const Node *node, const std::string &output_name) {
+  auto out_node = GetOutputVarNode(output_name, node);
+  PADDLE_ENFORCE_NOT_NULL(out_node, platform::errors::Unavailable(
+                                        "Node's out node does not exist."));
+  auto var = out_node->Var();
+  PADDLE_ENFORCE_NOT_NULL(
+      var, platform::errors::Unavailable("Node is not a variable."));
+  auto proto_var_type = var->GetDataType();
+  return VarType2OnnxDtype(proto_var_type);
+}
+
 }  // namespace ipu
 }  // namespace platform
 }  // namespace paddle
diff --git a/paddle/fluid/platform/device/ipu/popart_canonicalization/canonicalization_utils.h b/paddle/fluid/platform/device/ipu/popart_canonicalization/canonicalization_utils.h
index c1b2bd0c8b5fd454642be8eef733234c89c4d32a..5725ec767a42582ab728dd4d8c7e75ec403e9d68 100644
--- a/paddle/fluid/platform/device/ipu/popart_canonicalization/canonicalization_utils.h
+++ b/paddle/fluid/platform/device/ipu/popart_canonicalization/canonicalization_utils.h
@@ -23,10 +23,6 @@ namespace paddle {
 namespace platform {
 namespace ipu {
 
-using framework::ir::Graph;
-using framework::ir::Node;
-using framework::OpDesc;
-
 #define REGISTER_HANDLER(name, func) \
   static bool __UNUSED_##name =      \
       paddle::platform::ipu::RegisterHandler(#name, func)
@@ -58,6 +54,8 @@ Node *GetOutputVarNodeByVarName(const std::string &var_name,
                                 const Node *op_node);
 
 const bool is_float_equal(float a, float b, float eps = 1e-8);
+const int GetOutputVarDtype(const Node *node,
+                            const std::string &output_name = "Out");
 
 }  // namespace ipu
 }  // namespace platform
diff --git a/paddle/fluid/platform/device/ipu/popart_canonicalization/logic_ops.cc b/paddle/fluid/platform/device/ipu/popart_canonicalization/logic_ops.cc
index 92362ebf5be7d5426e4149e987c537691caedba4..c980bb780cfc0b9088fca71131d1b014b35d483c 100644
--- a/paddle/fluid/platform/device/ipu/popart_canonicalization/logic_ops.cc
+++ b/paddle/fluid/platform/device/ipu/popart_canonicalization/logic_ops.cc
@@ -28,7 +28,21 @@ Node *equal_handler(Graph *graph, Node *node) {
   return new_node;
 }
 
+Node *logical_not_handler(Graph *graph, Node *node) {
+  return CreateBaseOp(graph, node, "popart_logical_not",
+                      {GetInputVarNode("X", node)},
+                      {GetOutputVarNode("Out", node)}, {});
+}
+
+Node *greater_than_handler(Graph *graph, Node *node) {
+  return CreateBaseOp(graph, node, "popart_greater",
+                      {GetInputVarNode("X", node), GetInputVarNode("Y", node)},
+                      {GetOutputVarNode("Out", node)}, {});
+}
+
 REGISTER_HANDLER(equal, equal_handler);
+REGISTER_HANDLER(logical_not, logical_not_handler);
+REGISTER_HANDLER(greater_than, greater_than_handler);
 
 }  // namespace
 }  // namespace ipu
diff --git a/paddle/fluid/platform/device/ipu/popart_canonicalization/math_ops.cc b/paddle/fluid/platform/device/ipu/popart_canonicalization/math_ops.cc
index af7e4d0c7dbe9de77357c40f6298d1908495ac1a..67012e8d4b92d8d6336f1b192a7b19828511c08e 100644
--- a/paddle/fluid/platform/device/ipu/popart_canonicalization/math_ops.cc
+++ b/paddle/fluid/platform/device/ipu/popart_canonicalization/math_ops.cc
@@ -41,7 +41,8 @@ Node *pow_handler(Graph *graph, Node *node) {
     // Op(pow) -> Op(Constant)->Var(const_out)->Op(Pow)
     auto value_ = BOOST_GET_CONST(float, op->GetAttr("factor"));
     auto attrs =
-        MakeConstAttrMapFromValue<float>(value_, {1}, ONNXDataType::FLOAT);
+        MakeConstAttrMapFromValue<float>(value_, {1}, GetOutputVarDtype(node));
+
     auto new_node_const = CreateConst(graph, node, {}, {}, attrs);
     return CreateBaseOp(graph, node, "popart_pow", {GetInputVarNode("X", node),
                                                     new_node_const->outputs[0]},
@@ -122,16 +123,16 @@ Node *matmul_handler(Graph *graph, Node *node) {
     y_node = y_node->outputs[0];
   }
   if (is_float_equal(alpha, 1.0)) {
+    return CreateBaseOp(graph, node, "popart_matmul", {x_node, y_node},
+                        node->outputs);
+  } else {
     auto o_node =
         CreateBaseOp(graph, node, "popart_matmul", {x_node, y_node}, {});
-    auto attr = MakeConstAttrMapFromValue(alpha, {1}, ONNXDataType::FLOAT);
+    auto attr = MakeConstAttrMapFromValue(alpha, {1}, GetOutputVarDtype(node));
     auto const_node = CreateConst(graph, node, {}, {}, attr);
     return CreateBaseOp(graph, node, "popart_mul",
                         {o_node->outputs[0], const_node->outputs[0]},
                         node->outputs);
-  } else {
-    return CreateBaseOp(graph, node, "popart_matmul", {x_node, y_node},
-                        node->outputs);
   }
 }
 
@@ -141,7 +142,10 @@ Node *sum_handler(Graph *graph, Node *node) {
 
 Node *softmax_handler(Graph *graph, Node *node) {
   auto *op = node->Op();
-  auto axis = BOOST_GET_CONST(int, op->GetAttr("axis"));
+  int axis = -1;
+  if (op->HasAttr("axis")) {
+    axis = BOOST_GET_CONST(int, op->GetAttr("axis"));
+  }
   return CreateSoftmaxOpset11(graph, node, node->inputs, node->outputs, axis);
 }
 
@@ -153,42 +157,72 @@ Node *scale_handler(Graph *graph, Node *node) {
       BOOST_GET_CONST(bool, op->GetAttr("bias_after_scale"));
   auto data_type_ = GetInputVarNode("X", node)->Var()->GetDataType();
 
-  auto new_node_bias_var =
-      CreateConst(graph, node, {}, {}, {{"value", std::vector<float>{bias_}},
-                                        {"dims", std::vector<int64_t>{1}},
-                                        {"dtype", ONNXDataType::FLOAT}});
-  new_node_bias_var = new_node_bias_var->outputs[0];
-
-  Node *new_node_scale_var = nullptr;
-  if (op->HasInput("ScaleTensor") && !op->Input("ScaleTensor").empty()) {
-    new_node_scale_var = GetInputVarNode("ScaleTensor", node);
-  } else {
-    new_node_scale_var =
-        CreateConst(graph, node, {}, {}, {{"value", std::vector<float>{scale_}},
-                                          {"dims", std::vector<int64_t>{1}},
-                                          {"dtype", ONNXDataType::FLOAT}});
-    new_node_scale_var = new_node_scale_var->outputs[0];
-  }
+  auto cast = CreateCast(graph, node, {GetInputVarNode("X", node)}, {},
+                         static_cast<int>(framework::proto::VarType::FP32));
 
-  // convert to float32
-  auto new_node_cast =
-      CreateCast(graph, node, {GetInputVarNode("X", node)}, {},
-                 static_cast<int>(framework::proto::VarType::FP32));
   Node *result = nullptr;
-  if (bias_after_scale_) {
-    auto new_node_mul =
-        CreateBaseOp(graph, node, "popart_mul",
-                     {new_node_cast->outputs[0], new_node_scale_var}, {}, {});
-    result =
-        CreateBaseOp(graph, node, "popart_add",
-                     {new_node_mul->outputs[0], new_node_bias_var}, {}, {});
+  if (op->HasInput("ScaleTensor") && !op->Input("ScaleTensor").empty()) {
+    auto scale = GetInputVarNode("ScaleTensor", node);
+    if (is_float_equal(bias_, 0.0)) {
+      result = CreateBaseOp(graph, node, "popart_mul",
+                            {cast->outputs[0], scale}, {}, {});
+    } else {
+      auto bias = CreateConst(graph, node, {}, {},
+                              {{"value", std::vector<float>{bias_}},
+                               {"dims", std::vector<int64_t>{1}},
+                               {"dtype", ONNXDataType::FLOAT}});
+      bias = bias->outputs[0];
+      if (bias_after_scale_) {
+        auto mul = CreateBaseOp(graph, node, "popart_mul",
+                                {cast->outputs[0], scale}, {}, {});
+        result = CreateBaseOp(graph, node, "popart_add",
+                              {mul->outputs[0], bias}, {}, {});
+      } else {
+        auto add = CreateBaseOp(graph, node, "popart_add",
+                                {cast->outputs[0], bias}, {}, {});
+        result = CreateBaseOp(graph, node, "popart_mul",
+                              {add->outputs[0], scale}, {}, {});
+      }
+    }
   } else {
-    auto new_node_add =
-        CreateBaseOp(graph, node, "popart_add",
-                     {new_node_cast->outputs[0], new_node_bias_var}, {}, {});
-    result =
-        CreateBaseOp(graph, node, "popart_mul",
-                     {new_node_add->outputs[0], new_node_scale_var}, {}, {});
+    if (is_float_equal(bias_, 0.0) && is_float_equal(scale_, 1.0)) {
+      return CreateBaseOp(graph, node, "popart_identity",
+                          {GetInputVarNode("X", node)}, node->outputs, {});
+    } else if (is_float_equal(scale_, 1.0)) {
+      auto bias = CreateConst(graph, node, {}, {},
+                              {{"value", std::vector<float>{bias_}},
+                               {"dims", std::vector<int64_t>{1}},
+                               {"dtype", ONNXDataType::FLOAT}});
+      result = CreateBaseOp(graph, node, "popart_add",
+                            {cast->outputs[0], bias->outputs[0]}, {}, {});
+    } else if (is_float_equal(bias_, 0.0)) {
+      auto scale = CreateConst(graph, node, {}, {},
+                               {{"value", std::vector<float>{scale_}},
+                                {"dims", std::vector<int64_t>{1}},
+                                {"dtype", ONNXDataType::FLOAT}});
+      result = CreateBaseOp(graph, node, "popart_mul",
+                            {cast->outputs[0], scale->outputs[0]}, {}, {});
+    } else {
+      auto bias = CreateConst(graph, node, {}, {},
+                              {{"value", std::vector<float>{bias_}},
+                               {"dims", std::vector<int64_t>{1}},
+                               {"dtype", ONNXDataType::FLOAT}});
+      auto scale = CreateConst(graph, node, {}, {},
+                               {{"value", std::vector<float>{scale_}},
+                                {"dims", std::vector<int64_t>{1}},
+                                {"dtype", ONNXDataType::FLOAT}});
+      if (bias_after_scale_) {
+        auto mul = CreateBaseOp(graph, node, "popart_mul",
+                                {cast->outputs[0], scale->outputs[0]}, {}, {});
+        result = CreateBaseOp(graph, node, "popart_add",
+                              {mul->outputs[0], bias->outputs[0]}, {}, {});
+      } else {
+        auto add = CreateBaseOp(graph, node, "popart_add",
+                                {cast->outputs[0], bias->outputs[0]}, {}, {});
+        result = CreateBaseOp(graph, node, "popart_mul",
+                              {add->outputs[0], scale->outputs[0]}, {}, {});
+      }
+    }
   }
   auto result_after_cast =
       CreateCast(graph, node, result->outputs, node->outputs,
@@ -199,16 +233,27 @@ Node *scale_handler(Graph *graph, Node *node) {
 Node *cross_entropy2_handler(Graph *graph, Node *node) {
   auto *op = node->Op();
   auto ignoreIndex = BOOST_GET_CONST(int, op->GetAttr("ignore_index"));
-  auto new_cast = CreateCast(graph, node, {GetInputVarNode("Label", node)}, {},
-                             framework::proto::VarType::INT32);
+  Node *new_cast = nullptr;
+  if (GetInputVarNode("Label", node)->Var()->GetDataType() ==
+      framework::proto::VarType::INT32) {
+    new_cast = GetInputVarNode("Label", node);
+  } else {
+    auto new_cast = CreateCast(graph, node, {GetInputVarNode("Label", node)},
+                               {}, framework::proto::VarType::INT32);
+    new_cast = new_cast->outputs[0];
+  }
   auto label_shape_ = GetInputVarNode("Label", node)->Var()->GetShape();
-  if (label_shape_.size() == 1) {
-    return CreateBaseOp(graph, node, "popart_nllloss",
-                        {GetInputVarNode("X", node), new_cast->outputs[0]},
-                        {GetOutputVarNode("Y", node)},
-                        {
-                            {"ignoreIndex", ignoreIndex},
-                        });
+  if (label_shape_[label_shape_.size() - 1] != 1) {
+    auto log = CreateBaseOp(graph, node, "popart_log",
+                            {GetInputVarNode("X", node)}, {}, {});
+    return CreateBaseOp(
+        graph, node, "popart_nllloss_v2", {log->outputs[0], new_cast},
+        {GetOutputVarNode("Y", node)},
+        {
+            {"reduction", 2},  // popart::ReductionType::NoReduction
+            {"ignoreIndex", ignoreIndex},
+            {"inputIsLogProbability", true},
+        });
   } else {
     std::vector<int64_t> new_shape_{label_shape_[0]};
     auto const_before_loss = CreateBaseOp(
@@ -218,15 +263,19 @@ Node *cross_entropy2_handler(Graph *graph, Node *node) {
           std::vector<int64_t>{static_cast<int64_t>(new_shape_.size())}},
          {"dtype", ONNXDataType::INT64}});
 
-    auto reshape_before_loss = CreateBaseOp(
-        graph, node, "popart_reshape",
-        {new_cast->outputs[0], const_before_loss->outputs[0]}, {}, {});
+    auto reshape_before_loss =
+        CreateBaseOp(graph, node, "popart_reshape",
+                     {new_cast, const_before_loss->outputs[0]}, {}, {});
 
+    auto log = CreateBaseOp(graph, node, "popart_log",
+                            {GetInputVarNode("X", node)}, {}, {});
     auto nllloss = CreateBaseOp(
-        graph, node, "popart_nllloss",
-        {GetInputVarNode("X", node), reshape_before_loss->outputs[0]}, {},
+        graph, node, "popart_nllloss_v2",
+        {log->outputs[0], reshape_before_loss->outputs[0]}, {},
         {
+            {"reduction", 2},  // popart::ReductionType::NoReduction
             {"ignoreIndex", ignoreIndex},
+            {"inputIsLogProbability", true},
         });
 
     auto const_after_loss = CreateBaseOp(
@@ -244,6 +293,73 @@ Node *cross_entropy2_handler(Graph *graph, Node *node) {
   }
 }
 
+Node *cumsum_handler(Graph *graph, Node *node) {
+  auto *op = node->Op();
+  auto exclusive = BOOST_GET_CONST(bool, op->GetAttr("exclusive"));
+  int64_t popart_exclusive = 1 ? exclusive : 0;
+  auto reverse = BOOST_GET_CONST(bool, op->GetAttr("reverse"));
+  int64_t popart_reverse = 1 ? reverse : 0;
+  auto axis = BOOST_GET_CONST(int, op->GetAttr("axis"));
+  auto axis_node =
+      CreateConst(graph, node, {}, {}, {{"value", std::vector<int64_t>{axis}},
+                                        {"dims", std::vector<int64_t>{1}},
+                                        {"dtype", ONNXDataType::INT64}});
+  return CreateBaseOp(
+      graph, node, "popart_cumsum",
+      {GetInputVarNode("X", node), axis_node->outputs[0]},
+      {GetOutputVarNode("Out", node)},
+      {{"exclusive", popart_exclusive}, {"reverse", popart_reverse}});
+}
+
+Node *matmul_v2_handler(Graph *graph, Node *node) {
+  auto *op = node->Op();
+  auto transpose_x = BOOST_GET_CONST(bool, op->GetAttr("trans_x"));
+  auto transpose_y = BOOST_GET_CONST(bool, op->GetAttr("trans_y"));
+  auto x_shape = GetInputVarNode("X", node)->Var()->GetShape();
+  auto y_shape = GetInputVarNode("Y", node)->Var()->GetShape();
+
+  std::vector<int64_t> perm;
+  int x_rank = x_shape.size();
+  if (x_rank == 1) {
+    perm = std::vector<int64_t>{0};
+  } else if (x_rank == 2) {
+    perm = std::vector<int64_t>{1, 0};
+  } else if (x_rank == 3) {
+    perm = std::vector<int64_t>{0, 2, 1};
+  } else if (x_rank == 4) {
+    perm = std::vector<int64_t>{0, 1, 3, 2};
+  } else {
+    PADDLE_THROW(platform::errors::InvalidArgument(
+        "op matmul with input rank == %d", x_rank));
+  }
+
+  Node *x_node = GetInputVarNode("X", node);
+  Node *y_node = GetInputVarNode("Y", node);
+
+  if (transpose_x) {
+    x_node = CreateBaseOp(graph, node, "popart_transpose",
+                          {GetInputVarNode("X", node)}, {}, {{"perm", perm}});
+    x_node = x_node->outputs[0];
+  }
+  if (transpose_y) {
+    y_node = CreateBaseOp(graph, node, "popart_transpose",
+                          {GetInputVarNode("Y", node)}, {}, {{"perm", perm}});
+    y_node = y_node->outputs[0];
+  }
+
+  return CreateBaseOp(graph, node, "popart_matmul", {x_node, y_node},
+                      node->outputs);
+}
+
+Node *arg_max_handler(Graph *graph, Node *node) {
+  auto *op = node->Op();
+  auto axis = BOOST_GET_CONST(int64_t, op->GetAttr("axis"));
+  return CreateBaseOp(graph, node, "popart_argmax",
+                      {GetInputVarNode("X", node)},
+                      {GetOutputVarNode("Out", node)},
+                      {{"axis", axis}, {"keepdims", int64_t{0}}});
+}
+
 REGISTER_HANDLER(mean, mean_handler);
 REGISTER_HANDLER(pow, pow_handler);
 REGISTER_HANDLER(mul, mul_handler);
@@ -252,6 +368,9 @@ REGISTER_HANDLER(sum, sum_handler);
 REGISTER_HANDLER(softmax, softmax_handler);
 REGISTER_HANDLER(scale, scale_handler);
 REGISTER_HANDLER(cross_entropy2, cross_entropy2_handler);
+REGISTER_HANDLER(cumsum, cumsum_handler);
+REGISTER_HANDLER(matmul_v2, matmul_v2_handler);
+REGISTER_HANDLER(arg_max, arg_max_handler);
 
 }  // namespace
 }  // namespace ipu
diff --git a/paddle/fluid/platform/device/ipu/popart_canonicalization/nn_ops.cc b/paddle/fluid/platform/device/ipu/popart_canonicalization/nn_ops.cc
index 58f3e42b7387a778a553cc1187f912b1138d59b3..b7412000107d3157c6b5c38d7c456af3bd36aabd 100644
--- a/paddle/fluid/platform/device/ipu/popart_canonicalization/nn_ops.cc
+++ b/paddle/fluid/platform/device/ipu/popart_canonicalization/nn_ops.cc
@@ -22,7 +22,7 @@ namespace ipu {
 namespace {
 
 Node *conv2d_handler(Graph *graph, Node *node) {
-  OpDesc *op = node->Op();
+  auto *op = node->Op();
   auto dilations_ = BOOST_GET_CONST(std::vector<int>, op->GetAttr("dilations"));
   auto dilations = std::vector<int64_t>{dilations_.begin(), dilations_.end()};
   auto group_ = BOOST_GET_CONST(int, op->GetAttr("groups"));
@@ -193,6 +193,21 @@ Node *layer_norm_handler(Graph *graph, Node *node) {
   auto *op = node->Op();
   auto begin_norm_axis_ = BOOST_GET_CONST(int, op->GetAttr("begin_norm_axis"));
   auto input_shape_ = GetInputVarNode("X", node)->Var()->GetShape();
+  auto epsilon_ = BOOST_GET_CONST(float, op->GetAttr("epsilon"));
+  int64_t groups_ = 1;
+
+  auto groupnorm_attrs_ =
+      AttributeMap{{"epsilon", epsilon_}, {"num_groups", groups_}};
+
+  if (input_shape_.size() == 2) {
+    return CreateBaseOp(
+        graph, node, "popart_groupnormalization_v2",
+        {GetInputVarNode("X", node), GetInputVarNode("Scale", node),
+         GetInputVarNode("Bias", node)},
+        {GetOutputVarNode("Y", node), GetOutputVarNode("Mean", node),
+         GetOutputVarNode("Variance", node)},
+        groupnorm_attrs_);
+  }
 
   std::vector<int64_t> norm_shape_{1, 1};
   for (int i = 0; i < input_shape_.size(); i++) {
@@ -213,10 +228,6 @@ Node *layer_norm_handler(Graph *graph, Node *node) {
       graph, node, "popart_reshape",
       {GetInputVarNode("X", node), reshape1_const->outputs[0]}, {}, {});
 
-  auto epsilon_ = BOOST_GET_CONST(float, op->GetAttr("epsilon"));
-  int64_t groups_ = 1;
-  auto groupnorm_attrs_ =
-      AttributeMap{{"epsilon", epsilon_}, {"num_groups", groups_}};
   auto out_Y_ = MakeVarNode(graph, node);
   CreateBaseOp(graph, node, "popart_groupnormalization_v2",
                {new_node_reshape1->outputs[0], GetInputVarNode("Scale", node),
@@ -262,7 +273,7 @@ Node *dropout_handler(Graph *graph, Node *node) {
           CreateConst(graph, node, {}, {},
                       {{"value", std::vector<float>{1 - dropout_prob_}},
                        {"dims", std::vector<int64_t>{1}},
-                       {"dtype", ONNXDataType::FLOAT}});
+                       {"dtype", GetOutputVarDtype(node)}});
       return CreateBaseOp(graph, node, "popart_mul",
                           {GetInputVarNode("X", node), scale->outputs[0]},
                           {GetOutputVarNode("Out", node)}, {});
diff --git a/paddle/fluid/platform/device/ipu/popart_canonicalization/op_builder.cc b/paddle/fluid/platform/device/ipu/popart_canonicalization/op_builder.cc
index b7a3a8ca7c60f59f45dec5a1630fe3fd48a6f868..3ec1999edc4f0549cc348d9da39e3e23b76a1a91 100644
--- a/paddle/fluid/platform/device/ipu/popart_canonicalization/op_builder.cc
+++ b/paddle/fluid/platform/device/ipu/popart_canonicalization/op_builder.cc
@@ -31,15 +31,31 @@ const std::string GenerateOpName() {
 }
 
 const std::string CreateOpIdentifyId(Node *node) {
-  // format: op_type|out_var0|out_var1|...|_gen_*
+  // format:
+  //   if has custom op_namescope:
+  //      {op_namescope}/op_type/_gen_*
+  //   else:
+  //     {op_type}/{out_var0}/{out_var1}/.../_gen_*
   // this name will be used as op name when exporting onnx model from popart
   auto op_type = node->Name();
-  std::string op_out = "";
-  for (auto *out_node : node->outputs) {
-    op_out += "|";
-    op_out += out_node->Name();
+  std::string op_namescope;
+  if (node->Op()->HasAttr("op_namescope")) {
+    op_namescope =
+        BOOST_GET_CONST(std::string, node->Op()->GetAttr("op_namescope"));
+  } else {
+    op_namescope = "/";
+  }
+
+  if (op_namescope != "/") {
+    return {op_namescope + op_type + "/" + GenerateOpName()};
+  } else {
+    std::string op_out = "";
+    for (auto *out_node : node->outputs) {
+      op_out += "/";
+      op_out += out_node->Name();
+    }
+    return {op_type + op_out + "/" + GenerateOpName()};
   }
-  return {op_type + op_out + "|" + GenerateOpName()};
 }
 
 Node *MakeVarNode(Graph *graph, Node *node) {
@@ -100,6 +116,12 @@ Node *CreateBaseOp(Graph *graph, Node *node, const std::string &type,
   if (!new_node->Op()->HasAttr(sIpuStageAttr)) {
     CopyOpAttr(sIpuStageAttr, node->Op(), new_node->Op());
   }
+  if (node->Op()->HasAttr(sMatmulSerializeFactor)) {
+    CopyOpAttr(sMatmulSerializeFactor, node->Op(), new_node->Op());
+  }
+  if (node->Op()->HasAttr(sMatmulSerializeMode)) {
+    CopyOpAttr(sMatmulSerializeMode, node->Op(), new_node->Op());
+  }
   {
     new_node->Op()->SetAttr(sOpIdentifyIdAttr, CreateOpIdentifyId(node));
     new_node->Op()->Flush();
diff --git a/paddle/fluid/platform/device/ipu/popart_canonicalization/op_builder.h b/paddle/fluid/platform/device/ipu/popart_canonicalization/op_builder.h
index 7e70e56ef9166cc50a5018b0984994391856ab02..de3788e437a4243b9fe1dbe36833c8ab503a7e4a 100644
--- a/paddle/fluid/platform/device/ipu/popart_canonicalization/op_builder.h
+++ b/paddle/fluid/platform/device/ipu/popart_canonicalization/op_builder.h
@@ -14,15 +14,16 @@
 
 #pragma once
 
-#include "paddle/fluid/platform/device/ipu/common.h"
+#include "paddle/fluid/platform/device/ipu/ipu_names.h"
 #include "paddle/fluid/platform/device/ipu/popart_canonicalization/canonicalization_utils.h"
 
+using paddle::framework::AttributeMap;
+using paddle::framework::Attribute;
+
 namespace paddle {
 namespace platform {
 namespace ipu {
 
-using paddle::framework::AttributeMap;
-
 template <typename T>
 AttributeMap MakeConstAttrMap(std::vector<T> value, std::vector<int64_t> dims,
                               int dtype) {
@@ -56,7 +57,7 @@ Node *CreateConst(Graph *graph, Node *node, const std::vector<Node *> &inputs,
                   const std::vector<Node *> &outputs,
                   const AttributeMap &attrs);
 
-// otype is proto::VarType::Type
+// otype is framework::proto::VarType::Type
 Node *CreateCast(Graph *graph, Node *node, const std::vector<Node *> &inputs,
                  const std::vector<Node *> &outputs, const int otype);
 
diff --git a/paddle/fluid/platform/device/ipu/popart_canonicalization/other_ops.cc b/paddle/fluid/platform/device/ipu/popart_canonicalization/other_ops.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0919afef4d83aee2ab0a17a7a09c23d3f550f233
--- /dev/null
+++ b/paddle/fluid/platform/device/ipu/popart_canonicalization/other_ops.cc
@@ -0,0 +1,65 @@
+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "paddle/fluid/platform/device/ipu/popart_canonicalization/canonicalization_utils.h"
+#include "paddle/fluid/platform/device/ipu/popart_canonicalization/op_builder.h"
+#include "paddle/fluid/platform/enforce.h"
+
+namespace paddle {
+namespace platform {
+namespace ipu {
+namespace {
+
+Node *custom_op_handler(Graph *graph, Node *node) {
+  auto *op = node->Op();
+  auto attrs = op->GetAttrMap();
+  attrs.insert({"__op_type", node->Op()->Type()});
+  auto new_node = CreateBaseOp(graph, node, "popart_custom_op", node->inputs,
+                               node->outputs, attrs);
+  return new_node;
+}
+
+Node *print_handler(Graph *graph, Node *node) {
+  auto *op = node->Op();
+  auto print_phase = BOOST_GET_CONST(std::string, op->GetAttr("print_phase"));
+  int64_t print_gradient = 0;
+  if (print_phase != "forward") {
+    print_gradient = 1;
+  }
+  auto title = BOOST_GET_CONST(std::string, op->GetAttr("message"));
+  if (title.empty()) {
+    title = GetInputVarNode("In", node)->Var()->Name();
+  }
+  auto attrs =
+      AttributeMap{{"print_gradient", print_gradient}, {"title", title}};
+  return CreateBaseOp(graph, node, "popart_printtensor", node->inputs,
+                      node->outputs, attrs);
+}
+
+Node *popart_optimizer_handler(Graph *graph, Node *node) { return nullptr; }
+
+Node *checkpointoutput_handler(Graph *graph, Node *node) {
+  return CreateBaseOp(graph, node, "popart_checkpointoutput", node->inputs,
+                      node->outputs);
+}
+
+REGISTER_HANDLER(custom_op, custom_op_handler);
+REGISTER_HANDLER(print, print_handler);
+REGISTER_HANDLER(popart_optimizer, popart_optimizer_handler);
+REGISTER_HANDLER(checkpointoutput, checkpointoutput_handler);
+
+}  // namespace
+}  // namespace ipu
+}  // namespace platform
+}  // namespace paddle
diff --git a/paddle/fluid/platform/device/ipu/popart_canonicalization/search_ops.cc b/paddle/fluid/platform/device/ipu/popart_canonicalization/search_ops.cc
index e90faa502ec64865facfe1bdcab6a8f219f4030a..662660c23b4a6a357d27565a8c6b37b25db9c9be 100644
--- a/paddle/fluid/platform/device/ipu/popart_canonicalization/search_ops.cc
+++ b/paddle/fluid/platform/device/ipu/popart_canonicalization/search_ops.cc
@@ -21,24 +21,24 @@ namespace platform {
 namespace ipu {
 namespace {
 
-Node *topK_op_handler(Graph *graph, Node *node) {
-  VLOG(10) << "[topK_op_handler] entering to handler ...";
+Node *topk_handler(Graph *graph, Node *node) {
   auto *op = node->Op();
   auto attrs = AttributeMap{};
-  int axis_32INT = -1;
+
+  int axis_ = -1;
   if (op->HasAttr("axis")) {
-    axis_32INT = BOOST_GET_CONST(int, op->GetAttr("axis"));
+    axis_ = BOOST_GET_CONST(int, op->GetAttr("axis"));
   }
-  if (axis_32INT == -1) {
+  if (axis_ == -1) {
     auto shape = GetInputVarNode("X", node)->Var()->GetShape();
     int rank = shape.size();
     if (rank < 1) {
       PADDLE_THROW(platform::errors::InvalidArgument(
           "The dimension of the shape of topK input should be large than 1"));
     }
-    axis_32INT = rank - 1;
+    axis_ = rank - 1;
   }
-  int64_t axis = int64_t{axis_32INT};
+  int64_t axis = int64_t{axis_};
   attrs.emplace("axis", axis);
 
   bool largest = true;
@@ -63,45 +63,31 @@ Node *topK_op_handler(Graph *graph, Node *node) {
     attrs.emplace("sorted", 0);
   }
 
-  std::vector<paddle::framework::ir::Node *> inputs = node->inputs;
-  if (node->inputs.size() == 2) {
-    // Input X tensor and K const tensor
-    VLOG(10) << "[topK_op_handler] get 2 input tensors.";
-    inputs[0] = node->inputs[1];  // K_t
-    VLOG(10) << "[topK_op_handler] input node(" << inputs[0]->Var()->Name()
-             << ")";
-    inputs[1] = node->inputs[0];  // X
-    VLOG(10) << "[topK_op_handler] input node(" << inputs[1]->Var()->Name()
-             << ")";
-  } else if (node->inputs.size() == 1) {
-    // Input X tensor with k integer
-    VLOG(10) << "[topK_op_handler] get 1 input tensor.";
-    int k_32INT = BOOST_GET_CONST(int, op->GetAttr("k"));
-    int64_t k = int64_t{k_32INT};
-    attrs.emplace("k", k);
-  }
-  // show output node dtype
-  for (auto *o_node : node->outputs) {
-    auto *var = o_node->Var();
-    // see framework.pb.h
-    // VarType_Type_INT64 = 3,
-    // VarType_Type_FP32 = 5,
-    auto dtype = var->GetDataType();
-    if (dtype == 3) {
-      // poplar does not support int64_t
-      var->SetDataType(framework::proto::VarType::INT32);
-    }
-    std::string name = var->Name();
-    VLOG(10) << "[topK_op_handler] output node(" << name
-             << ") dtype : " << dtype;
+  Node *var_x = GetInputVarNode("X", node);
+  Node *var_k = nullptr;
+  if (op->HasInput("K") && !op->Input("K").empty()) {
+    var_k = GetInputVarNode("K", node);
+  } else {
+    auto k = BOOST_GET_CONST(int, op->GetAttr("k"));
+    auto *op_k =
+        CreateConst(graph, node, {}, {}, {{"value", std::vector<int64_t>{k}},
+                                          {"dims", std::vector<int64_t>{1}},
+                                          {"dtype", ONNXDataType::INT64}});
+    var_k = op_k->outputs[0];
   }
-  VLOG(10) << "[topK_op_handler] leave the handler.";
-  return CreateBaseOp(graph, node, "popart_topk", inputs,
-                      {node->outputs[1], node->outputs[0]}, attrs);
+
+  auto *var_i = MakeVarNode(graph, node);
+  CreateBaseOp(graph, node, "popart_topk", {var_x, var_k},
+               {GetOutputVarNode("Out", node), var_i},
+               {{"axis", int64_t{axis}},
+                {"largest", int64_t{largest}},
+                {"sorted", int64_t{sorted}}});
+  return CreateCast(graph, node, {var_i}, {GetOutputVarNode("Indices", node)},
+                    static_cast<int>(framework::proto::VarType::INT32));
 }
 
-REGISTER_HANDLER(top_k, topK_op_handler);
-REGISTER_HANDLER(top_k_v2, topK_op_handler);
+REGISTER_HANDLER(top_k, topk_handler);
+REGISTER_HANDLER(top_k_v2, topk_handler);
 
 }  // namespace
 }  // namespace ipu
diff --git a/paddle/fluid/platform/device/ipu/popart_canonicalization/tensor_ops.cc b/paddle/fluid/platform/device/ipu/popart_canonicalization/tensor_ops.cc
index f1f77b53e461445066b24755b625bc1f6426d532..296668890ebe5a0f1550e41aff4424b0f87b4f95 100644
--- a/paddle/fluid/platform/device/ipu/popart_canonicalization/tensor_ops.cc
+++ b/paddle/fluid/platform/device/ipu/popart_canonicalization/tensor_ops.cc
@@ -21,9 +21,6 @@ namespace platform {
 namespace ipu {
 namespace {
 
-using framework::Attribute;
-using framework::AttributeMap;
-
 Node *fill_constant_handler(Graph *graph, Node *node) {
   auto *op = node->Op();
   if (op->HasInput("ShapeTensor") && !op->Input("ShapeTensor").empty()) {
@@ -133,6 +130,14 @@ Node *reshape_handler(Graph *graph, Node *node) {
   return new_node_reshape;
 }
 
+Node *flatten2_handler(Graph *graph, Node *node) {
+  auto *op = node->Op();
+  auto axis = BOOST_GET_CONST(int, op->GetAttr("axis"));
+  return CreateBaseOp(
+      graph, node, "popart_flatten", {GetInputVarNode("X", node)},
+      {GetOutputVarNode("Out", node)}, {{"axis", int64_t(axis)}});
+}
+
 Node *gather_handler(Graph *graph, Node *node) {
   auto new_node_gather =
       CreateBaseOp(graph, node, "popart_gather",
@@ -169,7 +174,8 @@ Node *cast_handler(Graph *graph, Node *node) {
   return new_node_cast;
 }
 
-Node *lookup_table_handler(Graph *graph, Node *node) {
+Node *lookup_table_op_handler(Graph *graph, Node *node,
+                              const std::string &type) {
   auto *op = node->Op();
   auto padding_idx_ = BOOST_GET_CONST(int64_t, op->GetAttr("padding_idx"));
   auto w_shape_ = GetInputVarNode("W", node)->Var()->GetShape();
@@ -183,7 +189,7 @@ Node *lookup_table_handler(Graph *graph, Node *node) {
     auto concat_const =
         CreateConst(graph, node, {}, {}, {{"value", const_value_},
                                           {"dims", const_shape_},
-                                          {"dtype", ONNXDataType::FLOAT}});
+                                          {"dtype", GetOutputVarDtype(node)}});
     auto axes =
         CreateConst(graph, node, {}, {}, {{"value", std::vector<int64_t>{0}},
                                           {"dims", std::vector<int64_t>{1}},
@@ -247,16 +253,28 @@ Node *lookup_table_handler(Graph *graph, Node *node) {
     w_node = GetInputVarNode("W", node);
   }
 
-  auto squeeze = CreateBaseOp(graph, node, "popart_squeeze",
-                              {GetInputVarNode("Ids", node)}, {},
-                              {{"axes", std::vector<int64_t>{-1}}});
+  // lookup_table and lookup_table_v2
+  auto ids = GetInputVarNode("Ids", node);
+  if (type == "v1") {
+    ids = CreateBaseOp(graph, node, "popart_squeeze",
+                       {GetInputVarNode("Ids", node)}, {},
+                       {{"axes", std::vector<int64_t>{-1}}});
+    ids = ids->outputs[0];
+  }
 
-  auto gather =
-      CreateBaseOp(graph, node, "popart_gather", {w_node, squeeze->outputs[0]},
-                   {GetOutputVarNode("Out", node)}, {});
+  auto gather = CreateBaseOp(graph, node, "popart_gather", {w_node, ids},
+                             {GetOutputVarNode("Out", node)}, {});
   return gather;
 }
 
+Node *lookup_table_handler(Graph *graph, Node *node) {
+  return lookup_table_op_handler(graph, node, "v1");
+}
+
+Node *lookup_table_v2_handler(Graph *graph, Node *node) {
+  return lookup_table_op_handler(graph, node, "v2");
+}
+
 Node *unsqueeze_handler(Graph *graph, Node *node) {
   auto *op = node->Op();
   auto axes_ = BOOST_GET_CONST(std::vector<int>, op->GetAttr("axes"));
@@ -336,11 +354,32 @@ Node *slice_handler(Graph *graph, Node *node) {
     auto attr = MakeConstAttrMap<int>(axes_, {dim}, ONNXDataType::INT32);
     axes = CreateConst(graph, node, {}, {}, attr);
   }
-  auto new_node = CreateBaseOp(
-      graph, node, "popart_slice",
-      {GetInputVarNode("Input", node), starts, ends, axes->outputs[0]},
-      node->outputs);
-  return new_node;
+
+  auto decrease_axis_ =
+      BOOST_GET_CONST(std::vector<int>, op->GetAttr("decrease_axis"));
+  auto input_shape_ = GetInputVarNode("Input", node)->Var()->GetShape();
+  auto output_shape_ = GetOutputVarNode("Out", node)->Var()->GetShape();
+  if (decrease_axis_.size() == 0) {
+    return CreateBaseOp(
+        graph, node, "popart_slice",
+        {GetInputVarNode("Input", node), starts, ends, axes->outputs[0]},
+        node->outputs);
+  } else if (output_shape_ == std::vector<int64_t>{0} ||
+             input_shape_.size() > output_shape_.size()) {
+    auto slice = CreateBaseOp(
+        graph, node, "popart_slice",
+        {GetInputVarNode("Input", node), starts, ends, axes->outputs[0]}, {},
+        {});
+    return CreateBaseOp(graph, node, "popart_squeeze", {slice->outputs[0]},
+                        {GetOutputVarNode("Out", node)},
+                        {{"axes", std::vector<int64_t>{decrease_axis_.begin(),
+                                                       decrease_axis_.end()}}});
+  } else {
+    return CreateBaseOp(
+        graph, node, "popart_slice",
+        {GetInputVarNode("Input", node), starts, ends, axes->outputs[0]},
+        node->outputs);
+  }
 }
 
 Node *expand_handler(Graph *graph, Node *node) {
@@ -373,11 +412,94 @@ Node *expand_handler(Graph *graph, Node *node) {
   return new_node;
 }
 
+Node *assign_handler(Graph *graph, Node *node) {
+  return CreateBaseOp(graph, node, "popart_identity",
+                      {GetInputVarNode("X", node)},
+                      {GetOutputVarNode("Out", node)}, {});
+}
+
+Node *fill_any_like_handler(Graph *graph, Node *node) {
+  auto *op = node->Op();
+  auto value = BOOST_GET_CONST(float, op->GetAttr("value"));
+  auto x_shape = GetInputVarNode("X", node)->Var()->GetShape();
+  auto dtype = BOOST_GET_CONST(int, op->GetAttr("dtype"));
+  auto x_dtype = static_cast<framework::proto::VarType::Type>(dtype);
+  size_t size = 1;
+  for (auto &dim : x_shape) {
+    size *= dim;
+  }
+
+  Attribute out_value;
+  switch (x_dtype) {
+    case framework::proto::VarType::FP32:
+      out_value = std::vector<float>(size, value);
+      break;
+    case framework::proto::VarType::FP64:
+      out_value = std::vector<double>(size, value);
+      break;
+    case framework::proto::VarType::INT32:
+      out_value = std::vector<int>(size, value);
+      break;
+    case framework::proto::VarType::INT64:
+      out_value = std::vector<int64_t>(size, value);
+      break;
+    case framework::proto::VarType::BOOL:
+      out_value = std::vector<int64_t>(size, value);
+      break;
+    default:
+      PADDLE_THROW(
+          platform::errors::Unimplemented("fill_any_like dtype: %d", x_dtype));
+  }
+  return CreateConst(graph, node, node->inputs, node->outputs,
+                     AttributeMap{
+                         {"value", out_value},
+                         {"dims", x_shape},
+                         {"dtype", VarType2OnnxDtype(dtype)},
+                     });
+}
+
+Node *one_hot_handler(Graph *graph, Node *node) {
+  auto *op = node->Op();
+  auto depth = BOOST_GET_CONST(int, op->GetAttr("depth"));
+  auto allow_out_of_range =
+      BOOST_GET_CONST(bool, op->GetAttr("allow_out_of_range"));
+  if (allow_out_of_range) {
+    PADDLE_THROW(platform::errors::Unimplemented(
+        "Do not support allow_out_of_range=True"));
+  } else {
+    auto depth_tensor = CreateConst(graph, node, {}, {},
+                                    {{"value", std::vector<int64_t>{depth}},
+                                     {"dims", std::vector<int64_t>{1}},
+                                     {"dtype", ONNXDataType::INT64}});
+    auto value_tensor =
+        CreateConst(graph, node, {}, {}, {{"value", std::vector<float>{0, 1}},
+                                          {"dims", std::vector<int64_t>{2}},
+                                          {"dtype", ONNXDataType::FLOAT}});
+    return CreateBaseOp(graph, node, "popart_onehot",
+                        {GetInputVarNode("X", node), depth_tensor->outputs[0],
+                         value_tensor->outputs[0]},
+                        {GetOutputVarNode("Out", node)},
+                        {{"axis", int64_t{-1}}});
+  }
+}
+
+Node *split_handler(Graph *graph, Node *node) {
+  auto *op = node->Op();
+  auto axis = BOOST_GET_CONST(int, op->GetAttr("axis"));
+  auto sections = BOOST_GET_CONST(std::vector<int>, op->GetAttr("sections"));
+  return CreateBaseOp(
+      graph, node, "popart_split", {GetInputVarNode("X", node)}, node->outputs,
+      {{"num_outputs", int64_t(sections.size())},
+       {"axis", int64_t(axis)},
+       {"split", std::vector<int64_t>{sections.begin(), sections.end()}}});
+}
+
 REGISTER_HANDLER(fill_constant, fill_constant_handler);
 REGISTER_HANDLER(gaussian_random, gaussian_random_handler);
 REGISTER_HANDLER(uniform_random, uniform_random_handler);
 REGISTER_HANDLER(transpose2, transpose_handler);
 REGISTER_HANDLER(reshape2, reshape_handler);
+REGISTER_HANDLER(flatten2, flatten2_handler);
 REGISTER_HANDLER(gather, gather_handler);
 REGISTER_HANDLER(squeeze2, squeeze_handler);
 REGISTER_HANDLER(cast, cast_handler);
@@ -388,6 +510,11 @@ REGISTER_HANDLER(stack, stack_handler);
 REGISTER_HANDLER(shape, shape_handler);
 REGISTER_HANDLER(slice, slice_handler);
 REGISTER_HANDLER(expand, expand_handler);
+REGISTER_HANDLER(assign, assign_handler);
+REGISTER_HANDLER(fill_any_like, fill_any_like_handler);
+REGISTER_HANDLER(lookup_table_v2, lookup_table_v2_handler);
+REGISTER_HANDLER(split, split_handler);
+REGISTER_HANDLER(one_hot, one_hot_handler);
 
 }  // namespace
 }  // namespace ipu