diff --git a/include/core/data_type.h b/include/core/data_type.h
index 173600fb..654ce1ce 100644
--- a/include/core/data_type.h
+++ b/include/core/data_type.h
@@ -13,6 +13,9 @@ class DataType {
     int index;
 
   public:
+    // FIXME: default ctor should be deleted but json requires it. Solution:
+    // https://github.com/nlohmann/json#how-can-i-use-get-for-non-default-constructiblenon-copyable-types
+    DataType() = default;
     constexpr DataType(int index) : index(index) {}
     bool operator==(const DataType &rhs) const { return index == rhs.index; }
     bool operator<(const DataType &rhs) const { return index < rhs.index; }
diff --git a/include/core/kernel.h b/include/core/kernel.h
index 391e57e2..9415d496 100644
--- a/include/core/kernel.h
+++ b/include/core/kernel.h
@@ -2,7 +2,9 @@
 #include "core/common.h"
 #include "core/operator.h"
 #include "core/tensor.h"
-
+#include <functional>
+#include <nlohmann/json.hpp>
+using json = nlohmann::json;
 namespace infini {
 
 class RuntimeObj; // Forward declaration for Kernel::compute
@@ -10,12 +12,19 @@ class RuntimeObj; // Forward declaration for Kernel::compute
 struct PerfRecordObj {
     PerfRecordObj(){};
     PerfRecordObj(double time) : time(time){};
-    virtual ~PerfRecordObj() {}
-
+    virtual ~PerfRecordObj(){};
     double time = 0; // in milliseconds
+    virtual void to_json(json &j) {
+        j["type"] = 0;
+        j["data"] = time;
+    }
+    static Ref<PerfRecordObj> from_json(const json &j) {
+        PerfRecordObj tmp;
+        tmp.time = j["data"].get<int>();
+        return make_ref<PerfRecordObj>(tmp);
+    }
 };
 using PerfRecord = Ref<PerfRecordObj>;
-
 class Kernel {
   public:
     Kernel() {}
@@ -39,6 +48,33 @@ class Kernel {
                             const RuntimeObj *context) const = 0;
 };
 
+class PerfRecordRegistry {
+
+  private:
+    std::map<int, std::function<PerfRecord(const json &)>> perfrecords;
+    int nperfrecord = 0;
+
+  public:
+    ~PerfRecordRegistry() = default;
+    static PerfRecordRegistry &getInstance() {
+        static PerfRecordRegistry instance;
+        return instance;
+    }
+    bool
+    registerPerfRecord(const int type,
+                       std::function<PerfRecord(const json &)> constructor) {
+        IT_ASSERT(perfrecords.find(type) == perfrecords.end(),
+                  "Constructor already registered");
+        perfrecords.emplace(type, constructor);
+        nperfrecord++;
+        return true;
+    }
+    const std::function<PerfRecord(const json &)> &
+    getConstructor(const int type) const {
+        return perfrecords.at(type);
+    }
+};
+
 class KernelRegistry {
   public:
     using KernelRecord =
@@ -100,3 +136,13 @@ class CpuKernelWithoutConfig : public Kernel {
 
 #define REGISTER_KERNEL(device, opType, dataType, kernel, name)                \
     _REGISTER_KERNEL_1(device, opType, dataType, kernel, name, __COUNTER__)
+
+#define _REGISTER_CONSTRUCTOR_1(type, constructor, cnt)                        \
+    namespace infini {                                                         \
+    static const bool _CAT(_register_constructor_, cnt) =                      \
+        PerfRecordRegistry::getInstance().registerPerfRecord(type,             \
+                                                             constructor);     \
+    }
+
+#define REGISTER_CONSTRUCTOR(type, constructor)                                \
+    _REGISTER_CONSTRUCTOR_1(type, constructor, __COUNTER__)
diff --git a/include/core/operator.h b/include/core/operator.h
index 8e1dd593..b2db95ce 100644
--- a/include/core/operator.h
+++ b/include/core/operator.h
@@ -107,6 +107,9 @@ struct OpPerfKey {
     vector<int> attrs;
 
   public:
+    // FIXME: default ctor should be deleted but json requires it. Solution:
+    // https://github.com/nlohmann/json#how-can-i-use-get-for-non-default-constructiblenon-copyable-types
+    OpPerfKey() = default;
     OpPerfKey(HashType hash, OpType opType, vector<int> attrs = {})
         : hash(hash), opType(opType), attrs(attrs) {}
     bool operator==(const OpPerfKey &rhs) const {
diff --git a/include/core/perf_engine.h b/include/core/perf_engine.h
index 4689cbcf..58659134 100644
--- a/include/core/perf_engine.h
+++ b/include/core/perf_engine.h
@@ -1,7 +1,8 @@
 #pragma once
 #include "core/graph.h"
 #include "core/kernel.h"
-
+#include <nlohmann/json_fwd.hpp>
+using json = nlohmann::json;
 namespace infini {
 
 class PerfEngine {
@@ -23,18 +24,29 @@ class PerfEngine {
         return instance;
     }
 
-    std::optional<PerfRecord> getPerfData(const Key &key) {
+    /**
+     * @brief Get the Perf Data object
+     *
+     * @return PerfRecord nullptr if no record is fnoud.
+     */
+    PerfRecord getPerfData(const Key &key) {
         auto it = data.find(key);
         if (it != data.end()) // find previous evaluating results
             return data.at(key);
         else
-            return std::nullopt;
+            return nullptr;
     }
 
-    void setPerfData(const Key &key, const PerfRecord &record) {
+    void setPerfData(const Key &key, PerfRecord record) {
         IT_ASSERT(data.find(key) == data.end(), "Perf data already exist");
         data.emplace(key, record);
     }
+    map<Key, PerfRecord> get_data() { return data; }
+    void set_data(map<Key, PerfRecord> data) { this->data = data; }
+    void savePerfEngineData(std::string file_path);
+    void loadPerfEngineData(std::string file_path);
 };
+void to_json(json &j, const PerfEngine &p);
+void from_json(const json &j, PerfEngine &p);
 
 } // namespace infini
\ No newline at end of file
diff --git a/include/core/runtime.h b/include/core/runtime.h
index 9df2f9c3..c73133c3 100644
--- a/include/core/runtime.h
+++ b/include/core/runtime.h
@@ -2,6 +2,7 @@
 #include "core/common.h"
 #include "core/ref.h"
 #include <memory>
+
 namespace infini {
 
 /***************** Forward declaration begin *****************/
diff --git a/include/utils/dataloader.h b/include/utils/dataloader.h
index 8b32d93a..58e69836 100644
--- a/include/utils/dataloader.h
+++ b/include/utils/dataloader.h
@@ -6,5 +6,4 @@ namespace infini {
 
 void loadTensorData(TensorObj *tensor, std::string file_path);
 void saveTensorData(TensorObj *tensor, std::string file_path);
-
 } // namespace infini
diff --git a/src/core/perf_engine.cc b/src/core/perf_engine.cc
new file mode 100644
index 00000000..ecf97f66
--- /dev/null
+++ b/src/core/perf_engine.cc
@@ -0,0 +1,52 @@
+#include "core/perf_engine.h"
+#include <fstream>
+namespace infini {
+
+REGISTER_CONSTRUCTOR(0, PerfRecordObj::from_json);
+
+void PerfEngine::savePerfEngineData(std::string file_path) {
+    std::ofstream fileout(file_path,
+                          std::ios::out | std::ios::trunc | std::ios::binary);
+    json t = this->getInstance();
+    fileout << t << std::endl;
+    fileout.close();
+}
+
+void PerfEngine::loadPerfEngineData(std::string file_path) {
+    std::ifstream filein(file_path, std::ios::in | std::ios::binary);
+    string t;
+    filein >> t;
+    json j = json::parse(t);
+    from_json(j, this->getInstance());
+    filein.close();
+}
+
+/* json register should in the common namespace with corresponding type*/
+void to_json(json &j, const OpPerfKey &p) {
+    j = json{{"hashType", p.hash}, {"opType", p.opType}, {"attrs", p.attrs}};
+}
+void from_json(const json &j, OpPerfKey &p) {
+    j.at("hashType").get_to(p.hash);
+    j.at("opType").get_to(p.opType);
+    j.at("attrs").get_to(p.attrs);
+}
+void to_json(json &j, const DataType &p) {
+    j = p.toString() == "Float32" ? 0 : 1;
+}
+void from_json(const json &j, DataType &p) { p = DataType(j.get<int>()); }
+void to_json(json &j, const PerfRecord &p) { p->to_json(j); }
+void from_json(const json &j, PerfRecord &p) {
+    int type = j["type"].get<int>();
+    p = PerfRecordRegistry::getInstance().getConstructor(type)(j);
+}
+
+void to_json(json &j, const PerfEngine &p) {
+    auto &x = p.getInstance();
+    j["data"] = x.get_data();
+}
+void from_json(const json &j, PerfEngine &p) {
+    auto tmp = j["data"].get<map<PerfEngine::Key, PerfRecord>>();
+    p.set_data(tmp);
+}
+
+} // namespace infini
\ No newline at end of file
diff --git a/src/core/runtime.cc b/src/core/runtime.cc
index faf3d0e6..4d02f5ba 100644
--- a/src/core/runtime.cc
+++ b/src/core/runtime.cc
@@ -4,7 +4,6 @@
 #include "core/perf_engine.h"
 #include <chrono>
 #include <cstring>
-
 namespace infini {
 
 void CpuRuntimeObj::run(const Graph &graph, bool tune, bool profiling) const {
@@ -21,7 +20,7 @@ void CpuRuntimeObj::run(const Graph &graph, bool tune, bool profiling) const {
         auto kernelAttrs = KernelAttrs{device, op->getOpType(), op->getDType()};
         Kernel *kernel = kernelRegistry.getKernel(kernelAttrs);
         auto perfKey = PerfEngine::Key{kernelAttrs, op->getOpPerfKey()};
-        std::optional<PerfRecord> perfData = perfEngine.getPerfData(perfKey);
+        auto perfData = perfEngine.getPerfData(perfKey);
 
         // If no record and disable tuning, run with the default argument
         if (!perfData && !tune) {
@@ -38,7 +37,7 @@ void CpuRuntimeObj::run(const Graph &graph, bool tune, bool profiling) const {
             record = kernel->tune(op, this);
             perfEngine.setPerfData(perfKey, record);
         } else
-            record = *perfData;
+            record = perfData;
 
         if (!profiling) {
             kernel->compute(op, record, this);
@@ -69,7 +68,7 @@ double RuntimeObj::getPerfTime(const Graph &graph, bool profiling) const {
         auto kernelAttrs = KernelAttrs{device, op->getOpType(), op->getDType()};
         Kernel *kernel = kernelRegistry.getKernel(kernelAttrs);
         auto perfKey = PerfEngine::Key{kernelAttrs, op->getOpPerfKey()};
-        std::optional<PerfRecord> perfData = perfEngine.getPerfData(perfKey);
+        auto perfData = perfEngine.getPerfData(perfKey);
 
         PerfRecord record;
         // Tune the kernel if there is no record
@@ -77,7 +76,7 @@ double RuntimeObj::getPerfTime(const Graph &graph, bool profiling) const {
             record = kernel->tune(op, this);
             perfEngine.setPerfData(perfKey, record);
         } else
-            record = *perfData;
+            record = perfData;
 
         double t = record->time;
         totalTime += t;
diff --git a/src/cuda/cuda_runtime.cc b/src/cuda/cuda_runtime.cc
index fbfdbbbe..e8369535 100644
--- a/src/cuda/cuda_runtime.cc
+++ b/src/cuda/cuda_runtime.cc
@@ -1,7 +1,8 @@
 #include "cuda/cuda_runtime.h"
 #include "core/kernel.h"
 #include "core/perf_engine.h"
-
+#include "operators/conv.h"
+#include "operators/matmul.h"
 namespace infini {
 
 void CudaRuntimeObj::runWithoutSync(const Graph &graph, bool tune = false,
@@ -17,7 +18,7 @@ void CudaRuntimeObj::runWithoutSync(const Graph &graph, bool tune = false,
             KernelAttrs{device, op->getOpType(), DataType::Float32};
         Kernel *kernel = kernelRegistry.getKernel(kernelAttrs);
         auto perfKey = PerfEngine::Key{kernelAttrs, op->getOpPerfKey()};
-        std::optional<PerfRecord> perfData = perfEngine.getPerfData(perfKey);
+        auto perfData = perfEngine.getPerfData(perfKey);
         if (!perfData && !tune) {
             kernel->compute(op, this);
             continue;
@@ -28,10 +29,10 @@ void CudaRuntimeObj::runWithoutSync(const Graph &graph, bool tune = false,
             record = kernel->tune(op, this);
             perfEngine.setPerfData(perfKey, record);
         } else
-            record = *perfData;
-
+            record = perfData;
         double t = record->time;
         totalTime += t;
+        json j;
 
         if (profiling) {
             double t = timeit([&]() { kernel->compute(op, record, this); },
diff --git a/src/kernels/cuda/conv.cc b/src/kernels/cuda/conv.cc
index f09d10f4..e80a0b1e 100644
--- a/src/kernels/cuda/conv.cc
+++ b/src/kernels/cuda/conv.cc
@@ -7,30 +7,47 @@
 #include <tuple>
 namespace infini {
 
-static constexpr int N_ALGO = 8;
-static constexpr cudnnConvolutionFwdAlgo_t ALGOS[N_ALGO] = {
-    CUDNN_CONVOLUTION_FWD_ALGO_IMPLICIT_GEMM,
-    CUDNN_CONVOLUTION_FWD_ALGO_IMPLICIT_PRECOMP_GEMM,
-    CUDNN_CONVOLUTION_FWD_ALGO_GEMM,
-    CUDNN_CONVOLUTION_FWD_ALGO_DIRECT,
-    CUDNN_CONVOLUTION_FWD_ALGO_FFT,
-    CUDNN_CONVOLUTION_FWD_ALGO_FFT_TILING,
-    CUDNN_CONVOLUTION_FWD_ALGO_WINOGRAD,
-    CUDNN_CONVOLUTION_FWD_ALGO_WINOGRAD_NONFUSED};
-static constexpr int N_MODE = 2;
-static constexpr cudnnConvolutionMode_t MODES[N_MODE] = {
-    CUDNN_CONVOLUTION, CUDNN_CROSS_CORRELATION};
-
 struct ConvCuDnnPerfRecordObj : public PerfRecordObj {
     int algo = 0; // cudnnConvolutionFwdAlgo_t
     int mode = 1;
     size_t workspaceSize = 100000;
     bool fuseAct = false;
+    void to_json(json &j) override {
+        j["type"] = 1;
+        j["data"] = std::make_tuple(algo, mode, fuseAct, time, workspaceSize);
+    }
+    static PerfRecord from_json(const json &j) {
+        ConvCuDnnPerfRecordObj tmp;
+        auto [Algo, Mode, FuseAct, Time, WorkspaceSize] =
+            j["data"].get<tuple<int, int, bool, double, size_t>>();
+        tmp.algo = Algo;
+        tmp.mode = Mode;
+        tmp.fuseAct = FuseAct;
+        tmp.time = Time;
+        tmp.workspaceSize = WorkspaceSize;
+        return make_ref<ConvCuDnnPerfRecordObj>(tmp);
+    }
 };
+
 using ConvCuDnnPerfRecord = Ref<ConvCuDnnPerfRecordObj>;
 
 class convCudnn : public Kernel {
 
+    static constexpr int N_ALGO = 8;
+    static constexpr int N_MODE = 2;
+    static constexpr cudnnConvolutionFwdAlgo_t ALGOS[8] = {
+        CUDNN_CONVOLUTION_FWD_ALGO_IMPLICIT_GEMM,
+        CUDNN_CONVOLUTION_FWD_ALGO_IMPLICIT_PRECOMP_GEMM,
+        CUDNN_CONVOLUTION_FWD_ALGO_GEMM,
+        CUDNN_CONVOLUTION_FWD_ALGO_DIRECT,
+        CUDNN_CONVOLUTION_FWD_ALGO_FFT,
+        CUDNN_CONVOLUTION_FWD_ALGO_FFT_TILING,
+        CUDNN_CONVOLUTION_FWD_ALGO_WINOGRAD,
+        CUDNN_CONVOLUTION_FWD_ALGO_WINOGRAD_NONFUSED};
+
+    static constexpr cudnnConvolutionMode_t MODES[2] = {
+        CUDNN_CONVOLUTION, CUDNN_CROSS_CORRELATION};
+
     std::tuple<void *, void *, void *, cudnnTensorDescriptor_t,
                cudnnFilterDescriptor_t, cudnnTensorDescriptor_t,
                cudnnConvolutionDescriptor_t, cudnnActivationDescriptor_t,
@@ -276,4 +293,5 @@ class convCudnn : public Kernel {
 REGISTER_KERNEL(Device::CUDA, OpType::Conv, DataType::Float32, convCudnn,
                 "Conv_cuDNN_CUDA_Float32");
 
+REGISTER_CONSTRUCTOR(1, ConvCuDnnPerfRecordObj::from_json);
 } // namespace infini
\ No newline at end of file
diff --git a/src/kernels/cuda/matmul.cc b/src/kernels/cuda/matmul.cc
index 6e9db878..6add86aa 100644
--- a/src/kernels/cuda/matmul.cc
+++ b/src/kernels/cuda/matmul.cc
@@ -1,14 +1,24 @@
 #include "operators/matmul.h"
 #include "core/kernel.h"
 #include "cuda/cuda_runtime.h"
-#include <chrono>
-#include <functional>
 
 namespace infini {
-struct MatmulCudnnPerfRecordObj : public PerfRecordObj {
-    cublasGemmAlgo_t algo = CUBLAS_GEMM_DEFAULT;
+
+struct MatmulCublasPerfRecordObj : public PerfRecordObj {
+    int algo = CUBLAS_GEMM_DEFAULT;
+    void to_json(json &j) override {
+        j["type"] = 2;
+        j["data"] = std::make_pair(algo, time);
+    }
+    static PerfRecord from_json(const json &j) {
+        MatmulCublasPerfRecordObj tmp;
+        auto pr = j["data"].get<pair<int, double>>();
+        tmp.algo = pr.first;
+        tmp.time = pr.second;
+        return make_ref<MatmulCublasPerfRecordObj>(tmp);
+    }
 };
-using MatmulCudnnPerfRecord = Ref<MatmulCudnnPerfRecordObj>;
+
 constexpr int N_ALGO = 24;
 constexpr cublasGemmAlgo_t ALGOS[N_ALGO] = {
     CUBLAS_GEMM_ALGO0,  CUBLAS_GEMM_ALGO1,  CUBLAS_GEMM_ALGO2,
@@ -20,7 +30,6 @@ constexpr cublasGemmAlgo_t ALGOS[N_ALGO] = {
     CUBLAS_GEMM_ALGO18, CUBLAS_GEMM_ALGO19, CUBLAS_GEMM_ALGO20,
     CUBLAS_GEMM_ALGO21, CUBLAS_GEMM_ALGO22, CUBLAS_GEMM_ALGO23,
 };
-
 class matmulCublas : public Kernel {
     bool do_compute(const Operator &_op, const PerfRecord &_record,
                     const RuntimeObj *_context) const {
@@ -29,7 +38,7 @@ class matmulCublas : public Kernel {
         void *const inAData = (op->getInputs(0)->getRawDataPtr<void *>());
         void *const inBData = (op->getInputs(1)->getRawDataPtr<void *>());
         void *const outData = (op->getOutput()->getRawDataPtr<void *>());
-        auto record = as<MatmulCudnnPerfRecordObj>(_record);
+        auto record = as<MatmulCublasPerfRecordObj>(_record);
 
         const auto [b, m, n, k] = op->getBMNK();
         auto opA =
@@ -44,12 +53,13 @@ class matmulCublas : public Kernel {
             stat = cublasGemmStridedBatchedEx(
                 context->cublasHandle(), opB, opA, n, m, k, &alpha, inBData,
                 CUDA_R_32F, ldb, k * n, inAData, CUDA_R_32F, lda, m * k, &beta,
-                outData, CUDA_R_32F, ldc, m * n, b, CUDA_R_32F, record->algo);
+                outData, CUDA_R_32F, ldc, m * n, b, CUDA_R_32F,
+                (cublasGemmAlgo_t)record->algo);
         } else {
-            stat = cublasGemmEx(context->cublasHandle(), opB, opA, n, m, k,
-                                &alpha, inBData, CUDA_R_32F, ldb, inAData,
-                                CUDA_R_32F, lda, &beta, outData, CUDA_R_32F,
-                                ldc, CUDA_R_32F, record->algo);
+            stat = cublasGemmEx(
+                context->cublasHandle(), opB, opA, n, m, k, &alpha, inBData,
+                CUDA_R_32F, ldb, inAData, CUDA_R_32F, lda, &beta, outData,
+                CUDA_R_32F, ldc, CUDA_R_32F, (cublasGemmAlgo_t)record->algo);
         }
         return (stat == CUBLAS_STATUS_SUCCESS);
     }
@@ -61,7 +71,7 @@ class matmulCublas : public Kernel {
 
     void compute(const Operator &op, const RuntimeObj *context) const override {
         auto record =
-            make_ref<MatmulCudnnPerfRecordObj>(); // use default record;
+            make_ref<MatmulCublasPerfRecordObj>(); // use default record;
         compute(op, record, context);
     }
 
@@ -69,10 +79,10 @@ class matmulCublas : public Kernel {
                     const RuntimeObj *_context) const override {
         auto context = dynamic_cast<const CudaRuntimeObj *>(_context);
         auto op = as<MatmulObj>(_op);
-        auto ret = make_ref<MatmulCudnnPerfRecordObj>();
+        auto ret = make_ref<MatmulCublasPerfRecordObj>();
         ret->time = std::numeric_limits<double>::max();
         for (int i = 0; i < N_ALGO; i++) {
-            auto rcd = make_ref<MatmulCudnnPerfRecordObj>();
+            auto rcd = make_ref<MatmulCublasPerfRecordObj>();
             rcd->algo = ALGOS[i];
             if (!do_compute(_op, rcd, _context))
                 continue;
@@ -91,4 +101,5 @@ class matmulCublas : public Kernel {
 REGISTER_KERNEL(Device::CUDA, OpType::Matmul, DataType::Float32, matmulCublas,
                 "Matmul_cuBLAS_CUDA_Float32");
 
+REGISTER_CONSTRUCTOR(2, MatmulCublasPerfRecordObj::from_json);
 }; // namespace infini
\ No newline at end of file
diff --git a/test/kernels/cuda/test_perfengine.cc b/test/kernels/cuda/test_perfengine.cc
new file mode 100644
index 00000000..99559734
--- /dev/null
+++ b/test/kernels/cuda/test_perfengine.cc
@@ -0,0 +1,59 @@
+#include "core/graph.h"
+#include "core/kernel.h"
+#include "core/perf_engine.h"
+#include "core/runtime.h"
+#include "cuda/cuda_runtime.h"
+#include "cuda/cuda_utility.h"
+#include "operators/conv.h"
+#include "operators/matmul.h"
+#include "test.h"
+
+namespace infini {
+
+TEST(PerfEngine, save_and_load) {
+    Runtime cpu = CpuRuntimeObj::getInstance(); // CPUruntime is singleton
+    Graph gCpu = make_ref<GraphObj>(cpu);
+    Runtime cuda = make_ref<CudaRuntimeObj>();
+    Graph gCuda = make_ref<GraphObj>(cuda);
+    // Set input data on CPU in a CPU Graph
+    Tensor i0Cpu = gCpu->addTensor({1, 3, 224, 224}, DataType::Float32);
+    Tensor w0Cpu = gCpu->addTensor({2, 3, 3, 3}, DataType::Float32);
+    // Malloc data for all tensors in a graph. Do we need implicit allocation?
+    gCpu->dataMalloc();
+    i0Cpu->setData(IncrementalGenerator());
+    w0Cpu->setData(IncrementalGenerator());
+
+    // Copy input tensors from CPU to CUDA
+    Tensor i0Cuda = gCuda->cloneTensor(i0Cpu);
+    Tensor w0Cuda = gCuda->cloneTensor(w0Cpu);
+    // Build CUDA graph
+    auto conv =
+        gCuda->addOp<ConvObj>(i0Cuda, w0Cuda, nullptr, 1, 1, 1, 1, 1, 1);
+
+    auto ACpu = gCpu->addTensor(Shape{1, 3, 5}, DataType::Float32);
+    auto BCpu = gCpu->addTensor(Shape{1, 5, 2}, DataType::Float32);
+    gCpu->dataMalloc();
+    ACpu->setData(IncrementalGenerator());
+    BCpu->setData(IncrementalGenerator());
+
+    auto cudaRuntime = make_ref<CudaRuntimeObj>();
+
+    auto ACuda = gCuda->cloneTensor(ACpu);
+    auto BCuda = gCuda->cloneTensor(BCpu);
+    auto matmul = gCuda->addOp<MatmulObj>(ACuda, BCuda, nullptr);
+
+    gCuda->dataMalloc();
+    cudaRuntime->run(gCuda, true);
+    auto &perfEngine = PerfEngine::getInstance();
+
+    json j0 = perfEngine;
+    std::cout << "PerfEngine saveed:" << std::endl;
+    std::cout << j0 << std::endl;
+    perfEngine.savePerfEngineData("test.json");
+    perfEngine.loadPerfEngineData("test.json");
+    json j1 = perfEngine;
+    std::cout << "PerfEngine loaded:" << std::endl;
+    std::cout << j1 << std::endl;
+    EXPECT_TRUE(j0 == j1);
+}
+} // namespace infini
\ No newline at end of file