diff --git a/dipu/tests/python/unittests/test_generator.py b/dipu/tests/python/unittests/test_generator.py
index 379e83e39..631b57749 100644
--- a/dipu/tests/python/unittests/test_generator.py
+++ b/dipu/tests/python/unittests/test_generator.py
@@ -2,7 +2,11 @@
 import torch
 import torch_dipu
 from torch_dipu import diputype
-from torch_dipu.testing._internal.common_utils import TestCase, run_tests
+from torch_dipu.testing._internal.common_utils import (
+    TestCase,
+    run_tests,
+    onlyOn,
+)
 
 
 class TestGenerator(TestCase):
@@ -20,13 +24,13 @@ def test_python_api(self):
             torch.cuda.manual_seed(i)
 
         state = torch.cuda.get_rng_state(0)
-        new_state = torch.ones_like(state)
+        new_state = torch.ones_like(state) * 4
         torch.cuda.set_rng_state(new_state, 0)
         current_state = torch.cuda.get_rng_state(0)
         self.assertTrue(
             torch.allclose(
                 current_state,
-                torch.tensor(1, device=current_state.device, dtype=current_state.dtype),
+                torch.tensor(4, device=current_state.device, dtype=current_state.dtype),
             )
         )
 
@@ -194,6 +198,23 @@ def test_default_generators(self):
         torch.cuda.default_generators[0].manual_seed(1)
         self.assertEqual(torch.cuda.default_generators[0].initial_seed(), 1)
 
+    @onlyOn("CUDA")
+    def test_cuda_generator(self):
+        state = torch.cuda.get_rng_state(0)
+        state[-16] = 4
+        state[-15:-8] = 0
+        state[-8:] = 0
+        torch.cuda.set_rng_state(state)
+        self.assertEqual(torch.cuda.initial_seed(), 4)
+
+        # invalid offset, offset must be a multiple of 4
+        state[-8:] = 1
+        try:
+            torch.cuda.set_rng_state(state)
+            self.assertTrue(False, "should not go here")
+        except Exception as ex:
+            self.assertIn("offset must be a multiple of 4", ex.args[0])
+
 
 if __name__ == "__main__":
     run_tests()
diff --git a/dipu/third_party/DIOPI b/dipu/third_party/DIOPI
index 65930a539..02f03c6ab 160000
--- a/dipu/third_party/DIOPI
+++ b/dipu/third_party/DIOPI
@@ -1 +1 @@
-Subproject commit 65930a539938b692a84ba77027e91686b3d2516d
+Subproject commit 02f03c6abb20aa39d1d978436a53a2e4ec242d65
diff --git a/dipu/torch_dipu/csrc_dipu/binding/ExportRT.cpp b/dipu/torch_dipu/csrc_dipu/binding/ExportRT.cpp
index 4574f2b4f..f6ef6bbf0 100644
--- a/dipu/torch_dipu/csrc_dipu/binding/ExportRT.cpp
+++ b/dipu/torch_dipu/csrc_dipu/binding/ExportRT.cpp
@@ -205,7 +205,8 @@ void exportEvent(py::module& m) {
            py::arg("enable_timing") = false, py::arg("blocking") = false,
            py::arg("interprocess") = false)
       .def("record", py::overload_cast<>(&DIPUEvent::record), "record event")
-      .def("record", py::overload_cast<const DIPUStream&>(&DIPUEvent::record),
+      .def("record", py::overload_cast<const DIPUStream&, bool>(&DIPUEvent::record),
+           py::arg("stream"), py::arg("use_pool") = true,
            "record event on stream")
       .def("elapsed_time", &dipu::DIPUEvent::elapsed_time)
       .def("synchronize",
@@ -249,6 +250,8 @@ void exportCommunicator(py::module& m) {
         return kBackendDefaultTimeout;
       });
 
+  m.def("dump_info", dumpInfo);
+
   // py::object mdist = py::module::import("torch.distributed");
   // py::object register_backend =
   // mdist.attr("Backend").attr("register_backend"); The first parameter is the
diff --git a/dipu/torch_dipu/csrc_dipu/runtime/core/DIPUEvent.h b/dipu/torch_dipu/csrc_dipu/runtime/core/DIPUEvent.h
index 1af20b840..3165215dd 100644
--- a/dipu/torch_dipu/csrc_dipu/runtime/core/DIPUEvent.h
+++ b/dipu/torch_dipu/csrc_dipu/runtime/core/DIPUEvent.h
@@ -20,6 +20,7 @@ class DIPU_API DIPUEvent {
   deviceEvent_t event_{nullptr};
   c10::DeviceIndex device_index_{-1};
   c10::StreamId last_recorded_stream_id_{-1};
+  bool use_pool_{true};
 
  public:
   DIPUEvent(const DIPUEvent&) = delete;
@@ -29,7 +30,8 @@ class DIPU_API DIPUEvent {
   constexpr DIPUEvent(DIPUEvent&& other) noexcept
       : event_(other.event_),
         device_index_(other.device_index_),
-        last_recorded_stream_id_(other.last_recorded_stream_id_) {
+        last_recorded_stream_id_(other.last_recorded_stream_id_),
+        use_pool_(other.use_pool_) {
     other.unsafe_reset();
   }
 
@@ -39,6 +41,7 @@ class DIPU_API DIPUEvent {
       event_ = other.event_;
       device_index_ = other.device_index_;
       last_recorded_stream_id_ = other.last_recorded_stream_id_;
+      use_pool_ = other.use_pool_;
       other.unsafe_reset();
     }
     return *this;
@@ -76,8 +79,9 @@ class DIPU_API DIPUEvent {
 
   void record() { record(getCurrentDIPUStream()); }
 
-  void record(const DIPUStream& stream) {
+  void record(const DIPUStream& stream, bool use_pool = true) {
     if (!initialized()) {
+      use_pool_ = use_pool;
       create_event(stream.device_index());
     }
 
@@ -124,14 +128,23 @@ class DIPU_API DIPUEvent {
   void create_event(c10::DeviceIndex device_index) {
     device_index_ = device_index;
     DIPUGuard guard(device_index_);
-    devproxy::createEvent(&event_);
+    if(use_pool_) {
+      devproxy::createEvent(&event_);
+    } else {
+      devapis::createEvent(&event_);
+    }
   }
 
   void release_event() {
     if (initialized()) {
       DIPUGuard guard(device_index_);
-      devproxy::destroyEvent(event_);
+      if(use_pool_) {
+        devproxy::destroyEvent(event_);
+      } else {
+        devapis::destroyEvent(event_);
+      }
       event_ = nullptr;
+      use_pool_ = true;
     }
   }
 };
diff --git a/dipu/torch_dipu/csrc_dipu/runtime/core/DIPUGeneratorImpl.cpp b/dipu/torch_dipu/csrc_dipu/runtime/core/DIPUGeneratorImpl.cpp
index 488fd7c7b..124dfe776 100644
--- a/dipu/torch_dipu/csrc_dipu/runtime/core/DIPUGeneratorImpl.cpp
+++ b/dipu/torch_dipu/csrc_dipu/runtime/core/DIPUGeneratorImpl.cpp
@@ -89,7 +89,7 @@ DIPUGeneratorImpl::DIPUGeneratorImpl(at::DeviceIndex device_index)
  */
 void DIPUGeneratorImpl::set_current_seed(uint64_t seed) {
   seed_ = seed;
-  offset_ = 0;
+  set_offset(0);
   state_need_reset_ = true;
 }
 
diff --git a/dipu/torch_dipu/csrc_dipu/runtime/distributed/ProcessGroupDICL.cpp b/dipu/torch_dipu/csrc_dipu/runtime/distributed/ProcessGroupDICL.cpp
index ea958b12e..8d06f0780 100644
--- a/dipu/torch_dipu/csrc_dipu/runtime/distributed/ProcessGroupDICL.cpp
+++ b/dipu/torch_dipu/csrc_dipu/runtime/distributed/ProcessGroupDICL.cpp
@@ -1,6 +1,8 @@
 // Copyright (c) 2023, DeepLink.
 #include "ProcessGroupDICL.h"
 
+#include <fstream>
+#include <mutex>
 #include <utility>
 #include <vector>
 
@@ -120,6 +122,70 @@ void checkGatherScatterRootRank(
 
 }  // anonymous namespace
 
+// start WorkStore
+
+class WorkStore {
+  struct WorkInfo {
+    DIPUEvent startEvent_;
+    DIPUEvent endEvent_;
+    int rank_;
+    int comm_size_;
+  };
+
+ public:
+  void setUid(const std::vector<uint8_t>& uidVec) { uniqueidVec_ = uidVec; }
+
+  size_t recordStart(const DIPUStream& stream, int rank, int comm_size) {
+    std::lock_guard<std::mutex> lock(mtx_);
+    info_vec_.push_back(WorkInfo());
+    size_t index = info_vec_.size() - 1;
+    info_vec_[index].startEvent_.record(stream, false);
+    info_vec_[index].rank_ = rank;
+    info_vec_[index].comm_size_ = comm_size;
+
+    return index;
+  }
+
+  void recordEnd(const DIPUStream& stream, size_t index) {
+    std::lock_guard<std::mutex> lock(mtx_);
+    info_vec_[index].endEvent_.record(stream, false);
+  }
+
+  void dump(std::string& path) {
+    for (auto& wi : info_vec_) {
+      wi.endEvent_.synchronize();
+      float duration = wi.startEvent_.elapsed_time(wi.endEvent_);
+      std::ostringstream oss;
+      oss << "PG uniqueId = ";
+      for (int i = 0; i < 32; ++i) {
+        oss << static_cast<int>(uniqueidVec_[i]);
+      }
+      oss << ", comm_size = " << wi.comm_size_ << ", duration = " << duration
+          << std::endl;
+      std::string filePath = path + "/rank_" + std::to_string(wi.rank_);
+      std::ofstream outFile(filePath, std::ios::app);
+      outFile << oss.str();
+    }
+
+    info_vec_.clear();
+  }
+
+ private:
+  std::vector<WorkInfo> info_vec_;
+  std::mutex mtx_;
+  std::vector<uint8_t> uniqueidVec_;
+};
+
+// end WorkStore
+
+std::vector<std::shared_ptr<WorkStore>> global_stores;
+
+void dumpInfo(std::string& path) {
+  for (auto p : global_stores) {
+    p->dump(path);
+  }
+}
+
 // start WorkDICL
 
 // currently DICL do not support error check
@@ -196,7 +262,10 @@ ProcessGroupDICL::WorkDICL::getFuture() {
 
 ProcessGroupDICL::ProcessGroupDICL(const c10::intrusive_ptr<Store>& store,
                                    int rank, int size)
-    : c10d::Backend(rank, size), store_(store) {
+    : c10d::Backend(rank, size),
+      store_(store),
+      pWstore_(std::make_shared<WorkStore>()) {
+  global_stores.push_back(pWstore_);
   char* blockingWait = getenv(DICL_BLOCKING_WAIT);
   try {
     if (blockingWait != nullptr) {
@@ -238,6 +307,7 @@ void ProcessGroupDICL::broadcastUniqueID(commUniqueId* uniqueId,
     auto vec = std::vector<uint8_t>(reinterpret_cast<uint8_t*>(uniqueId),
                                     reinterpret_cast<uint8_t*>(uniqueId) +
                                         devapis::DICL_UNIQUE_ID_BYTES_SIZE);
+    pWstore_->setUid(vec);
     store_->set(storeKey, vec);
   } else {
     auto vec = store_->get(storeKey);
@@ -246,6 +316,7 @@ void ProcessGroupDICL::broadcastUniqueID(commUniqueId* uniqueId,
           "Unexpected DICL unique ID length received "
           "from the store");
     }
+    pWstore_->setUid(vec);
     std::memcpy(uniqueId, vec.data(), vec.size());
   }
 }
@@ -442,6 +513,13 @@ c10::intrusive_ptr<Work> ProcessGroupDICL::doComm(
   auto work = c10::make_intrusive<ProcessGroupDICL::WorkDICL>(
       diclComms, blockingWait_, opTimeout_);
 
+  size_t eventIndex;
+  if (opType == OpType::ALLREDUCE) {
+    eventIndex =
+        pWstore_->recordStart(diclComms[0]->diclStream_, this->rank_,
+                              inputs[0].element_size() * inputs[0].numel());
+  }
+
   OptionalDIPUGuard dipuGuard;
   pre(diclComms);
 
@@ -466,6 +544,11 @@ c10::intrusive_ptr<Work> ProcessGroupDICL::doComm(
   }
 
   post(diclComms);
+
+  if (opType == OpType::ALLREDUCE) {
+    pWstore_->recordEnd(diclComms[0]->diclStream_, eventIndex);
+  }
+
   work->record();
 
   work->outputs_ = std::make_shared<std::vector<at::Tensor>>(outputs);
diff --git a/dipu/torch_dipu/csrc_dipu/runtime/distributed/ProcessGroupDICL.h b/dipu/torch_dipu/csrc_dipu/runtime/distributed/ProcessGroupDICL.h
index d5ba9da1e..b2f3171ba 100644
--- a/dipu/torch_dipu/csrc_dipu/runtime/distributed/ProcessGroupDICL.h
+++ b/dipu/torch_dipu/csrc_dipu/runtime/distributed/ProcessGroupDICL.h
@@ -2,6 +2,7 @@
 #pragma once
 
 #include <chrono>
+#include <queue>
 #include <string_view>
 #include <unordered_map>
 #include <vector>
@@ -40,6 +41,10 @@ using c10d::Work;
 constexpr const char* DICL_BLOCKING_WAIT = "DICL_BLOCKING_WAIT";
 constexpr int64_t diclSyncBusyWaitMillis = 30;
 
+void dumpInfo(std::string& path);
+
+class WorkStore;
+
 /**
  * ProcessGroupDICL implements DICLbindings for c10d.
  *
@@ -310,6 +315,8 @@ class DIPU_API ProcessGroupDICL : public Backend {
   bool blockingWait_ = false;
 
   std::chrono::milliseconds opTimeout_ = kBackendDefaultTimeout;
+
+  std::shared_ptr<WorkStore> pWstore_;
 };
 
 namespace dicl_hook {
diff --git a/dipu/torch_dipu/csrc_dipu/vendor/cuda/CudaGeneratorImpl.cpp b/dipu/torch_dipu/csrc_dipu/vendor/cuda/CudaGeneratorImpl.cpp
index 6ef338bc3..03d8d5a75 100644
--- a/dipu/torch_dipu/csrc_dipu/vendor/cuda/CudaGeneratorImpl.cpp
+++ b/dipu/torch_dipu/csrc_dipu/vendor/cuda/CudaGeneratorImpl.cpp
@@ -39,11 +39,12 @@ class CUDAGeneratorImpl : public dipu::DIPUGeneratorImpl {
 #else
     auto new_rng_state = state.data_dtype_initialized<uint8_t>();
 #endif
-    memcpy(&input_seed, new_rng_state, seed_size);
+    memcpy(&input_seed, new_rng_state + states_size, seed_size);
     this->set_current_seed(input_seed);
     int64_t philox_offset = 0;
     if (!no_philox_seed) {
-      memcpy(&philox_offset, new_rng_state + seed_size, offset_size);
+      memcpy(&philox_offset, new_rng_state + states_size + seed_size,
+             offset_size);
     }
     this->set_offset(static_cast<uint64_t>(philox_offset));
 
@@ -71,6 +72,11 @@ class CUDAGeneratorImpl : public dipu::DIPUGeneratorImpl {
       state_need_reset_ = false;
     }
   }
+
+  void set_offset(uint64_t offset) override {
+    TORCH_CHECK(offset % 4 == 0, "offset must be a multiple of 4");
+    DIPUGeneratorImpl::set_offset(offset);
+  }
 };
 
 // NOLINTNEXTLINE(readability-const-return-type)
diff --git a/dipu/torch_dipu/dipu/distributed.py b/dipu/torch_dipu/dipu/distributed.py
index 73e0cfbac..feb5861e4 100644
--- a/dipu/torch_dipu/dipu/distributed.py
+++ b/dipu/torch_dipu/dipu/distributed.py
@@ -1,4 +1,5 @@
 from datetime import timedelta
+import os
 
 import torch
 from torch import distributed as dist
@@ -113,6 +114,10 @@ def _wrap_new_group(
     return _raw_new_group(ranks, timeout, backend, pg_options)
 
 
+def _wrap_dump_info(path):
+    _C.dump_info(path)
+
+
 def apply_dist_patch():
     dist.get_backend = _wrap_get_backend
     dist.init_process_group = _wrap_init_process_groups
@@ -123,3 +128,5 @@ def apply_dist_patch():
 
     if dipu.get_dipu_torch_version() == dipu.torch_ver_200:
         dist.new_group = _wrap_new_group
+
+    dist.dump_info = _wrap_dump_info