diff --git a/csrc/extensions.cpp b/csrc/extensions.cpp
index 7b361054..7e5fe344 100644
--- a/csrc/extensions.cpp
+++ b/csrc/extensions.cpp
@@ -167,16 +167,15 @@ auto extMultiHeadAttentionVarLenBackward(
 
 auto extFlashAttention(at::Tensor& out, const at::Tensor& q,
                        const at::Tensor& k, const at::Tensor& v,
-                       double p_dropout, double softmax_scale, bool is_causal,
-                       int64_t head_num, const std::string& input_layout) {
+                       at::Generator& gen, double p_dropout,
+                       double softmax_scale, bool is_causal, int64_t head_num,
+                       const std::string& input_layout) {
   diopiTensorHandle_t attention_mask = nullptr;
   diopiTensorHandle_t dropout_mask = nullptr;
   diopiTensorHandle_t softmax_max = nullptr;
   diopiTensorHandle_t softmax_sum = nullptr;
   diopiTensorHandle_t softmax_out = nullptr;
 
-  auto gen = createDIPUGenerator();
-
   [[maybe_unused]] auto context = callDiopiKeepContext(
       diopiFlashAttention, out, &attention_mask, &dropout_mask, &softmax_max,
       &softmax_sum, &softmax_out, gen, q, k, v, p_dropout, softmax_scale,
@@ -195,16 +194,14 @@ auto extFlashAttention(at::Tensor& out, const at::Tensor& q,
 
 auto extFlashAttentionV2(at::Tensor& out, const at::Tensor& q,
                          const at::Tensor& k, const at::Tensor& v,
-                         const at::Tensor& attention_mask, double p_dropout,
-                         double softmax_scale, int64_t head_num,
-                         const std::string& input_layout) {
+                         at::Generator& gen, const at::Tensor& attention_mask,
+                         double p_dropout, double softmax_scale,
+                         int64_t head_num, const std::string& input_layout) {
   diopiTensorHandle_t dropout_mask = nullptr;
   diopiTensorHandle_t softmax_max = nullptr;
   diopiTensorHandle_t softmax_sum = nullptr;
   diopiTensorHandle_t softmax_out = nullptr;
 
-  auto gen = createDIPUGenerator();
-
   [[maybe_unused]] auto context = callDiopiKeepContext(
       diopiFlashAttentionV2, out, &dropout_mask, &softmax_max, &softmax_sum,
       &softmax_out, gen, q, k, v, attention_mask, p_dropout, softmax_scale,
diff --git a/deeplink_ext/ascend_speed/flash_attention.py b/deeplink_ext/ascend_speed/flash_attention.py
index 8d1b1a93..6d0d14e1 100644
--- a/deeplink_ext/ascend_speed/flash_attention.py
+++ b/deeplink_ext/ascend_speed/flash_attention.py
@@ -1,4 +1,5 @@
 import torch
+import torch_dipu
 import deeplink_ext.cpp_extensions as ext
 
 assert hasattr(ext, "fa_fwd_v2") and hasattr(ext, "fa_bwd")
@@ -10,6 +11,7 @@ def forward(
         ctx, q, k, v, attention_mask, dropout_p, softmax_scale, head_num, input_layout
     ):
         out = torch.empty_like(q)
+        gen = torch_dipu._C._create_dipu_generator(-1)
         (
             dropout_mask,
             softmax_max,
@@ -20,6 +22,7 @@ def forward(
             q,
             k,
             v,
+            gen,
             attention_mask,
             dropout_p,
             softmax_scale,