diff --git a/csrc/deepep/ops/op_host/fused_deep_moe_tiling.cpp b/csrc/deepep/ops/op_host/fused_deep_moe_tiling.cpp
index e6016938a..2885d016e 100644
--- a/csrc/deepep/ops/op_host/fused_deep_moe_tiling.cpp
+++ b/csrc/deepep/ops/op_host/fused_deep_moe_tiling.cpp
@@ -36,15 +36,15 @@ namespace {
 class Mc2TilingUtils
 {
 public:
-#define HCCL_BUFFSIZE "HCCL_BUFFSIZE"
     static uint64_t GetMaxWindowSize(const char *nodeName)
     {
         uint16_t defaultWindowSize = 200;
-        if (getenv(HCCL_BUFFSIZE) == nullptr) {
+        const char *hcclBuffSize = getenv("DEEPEP_HCCL_BUFFSIZE") == nullptr ? "HCCL_BUFFSIZE" : "DEEPEP_HCCL_BUFFSIZE";
+        if (getenv(hcclBuffSize) == nullptr) {
             OPS_LOG_D(nodeName, "Env HCCL_BUFFSIZE don't set");
         } else {
             try {
-                std::string envStr(getenv(HCCL_BUFFSIZE));
+                std::string envStr(getenv(hcclBuffSize));
                 defaultWindowSize = std::stoi(envStr);
             } catch (...) {
                 OPS_LOG_E(nodeName, "Unknown Exception encountered when parser env HCCL_BUFFERSIZE");
diff --git a/csrc/deepep/ops/op_host/mc2_tiling_utils.h b/csrc/deepep/ops/op_host/mc2_tiling_utils.h
index 7867d8619..958d46719 100644
--- a/csrc/deepep/ops/op_host/mc2_tiling_utils.h
+++ b/csrc/deepep/ops/op_host/mc2_tiling_utils.h
@@ -12,15 +12,15 @@
 class Mc2TilingUtils
 {
 public:
-#define HCCL_BUFFSIZE "HCCL_BUFFSIZE"
     static uint64_t GetMaxWindowSize()
     {
         uint16_t defaultWindowSize = 200;
-        if (getenv(HCCL_BUFFSIZE) == nullptr) {
+        const char *hcclBuffSize = getenv("DEEPEP_HCCL_BUFFSIZE") == nullptr ? "HCCL_BUFFSIZE" : "DEEPEP_HCCL_BUFFSIZE";
+        if (getenv(hcclBuffSize) == nullptr) {
             OP_LOGD("", "Env HCCL_BUFFSIZE don't set");
         } else {
             try {
-                std::string envStr(getenv(HCCL_BUFFSIZE));
+                std::string envStr(getenv(hcclBuffSize));
                 defaultWindowSize = std::stoi(envStr);
             } catch (const std::invalid_argument &ia) {
                 OP_LOGE("", "Invalid argument when parsing HCCL_BUFFSIZE: %s", ia.what());
diff --git a/csrc/deepep/ops2/op_host/cam_moe_combine_normal_tiling.cc b/csrc/deepep/ops2/op_host/cam_moe_combine_normal_tiling.cc
index 639ba10fa..a2018d1d8 100644
--- a/csrc/deepep/ops2/op_host/cam_moe_combine_normal_tiling.cc
+++ b/csrc/deepep/ops2/op_host/cam_moe_combine_normal_tiling.cc
@@ -29,18 +29,20 @@ namespace {
 class Mc2TilingUtils
 {
 public:
-#define HCCL_BUFFSIZE "HCCL_BUFFSIZE"
     static uint64_t GetMaxWindowSize()
     {
         uint16_t defaultWindowSize = 200;
-        if (getenv(HCCL_BUFFSIZE) == nullptr) {
+        const char *hcclBuffSize = getenv("DEEPEP_HCCL_BUFFSIZE") == nullptr ? "HCCL_BUFFSIZE" : "DEEPEP_HCCL_BUFFSIZE";
+        if (getenv(hcclBuffSize) == nullptr) {
             OP_LOGD("", "Env HCCL_BUFFSIZE don't set");
         } else {
             try {
-                std::string envStr(getenv(HCCL_BUFFSIZE));
+                std::string envStr(getenv(hcclBuffSize));
                 defaultWindowSize = std::stoi(envStr);
-            } catch (...) {
-                OP_LOGE("", "Unknown Exception encountered when parser env HCCL_BUFFERSIZE");
+            } catch (const std::invalid_argument &ia) {
+                OP_LOGE("", "Invalid argument when parsing HCCL_BUFFSIZE: %s", ia.what());
+            } catch (const std::out_of_range &oor) {
+                OP_LOGE("", "Out of range when parsing HCCL_BUFFSIZE: %s", oor.what());
             }
         }
         const uint64_t maxWindowSize = static_cast<uint64_t>(defaultWindowSize) * 1024UL * 1024UL;
diff --git a/csrc/deepep/ops2/op_host/cam_moe_dispatch_normal_tiling.cc b/csrc/deepep/ops2/op_host/cam_moe_dispatch_normal_tiling.cc
index 0063b627a..cb55957f8 100644
--- a/csrc/deepep/ops2/op_host/cam_moe_dispatch_normal_tiling.cc
+++ b/csrc/deepep/ops2/op_host/cam_moe_dispatch_normal_tiling.cc
@@ -28,15 +28,15 @@ namespace {
 class Mc2TilingUtils
 {
 public:
-#define HCCL_BUFFSIZE "HCCL_BUFFSIZE"
     static uint64_t GetMaxWindowSize()
     {
         uint16_t defaultWindowSize = 200;
-        if (getenv(HCCL_BUFFSIZE) == nullptr) {
+        const char *hcclBuffSize = getenv("DEEPEP_HCCL_BUFFSIZE") == nullptr ? "HCCL_BUFFSIZE" : "DEEPEP_HCCL_BUFFSIZE";
+        if (getenv(hcclBuffSize) == nullptr) {
             OP_LOGD("", "Env HCCL_BUFFSIZE don't set");
         } else {
             try {
-                std::string envStr(getenv(HCCL_BUFFSIZE));
+                std::string envStr(getenv(hcclBuffSize));
                 defaultWindowSize = std::stoi(envStr);
             } catch (const std::invalid_argument &ia) {
                 OP_LOGE("", "Invalid argument when parsing HCCL_BUFFSIZE: %s", ia.what());
diff --git a/csrc/deepep/ops2/op_host/dispatch_normal_a2_tiling.cpp b/csrc/deepep/ops2/op_host/dispatch_normal_a2_tiling.cpp
index 433f3f895..3b63d5fca 100644
--- a/csrc/deepep/ops2/op_host/dispatch_normal_a2_tiling.cpp
+++ b/csrc/deepep/ops2/op_host/dispatch_normal_a2_tiling.cpp
@@ -33,15 +33,15 @@ namespace {
 class Mc2TilingUtils
 {
 public:
-#define HCCL_BUFFSIZE "HCCL_BUFFSIZE"
     static uint64_t GetMaxWindowSize()
     {
         uint16_t defaultWindowSize = 200;
-        if (getenv(HCCL_BUFFSIZE) == nullptr) {
+        const char *hcclBuffSize = getenv("DEEPEP_HCCL_BUFFSIZE") == nullptr ? "HCCL_BUFFSIZE" : "DEEPEP_HCCL_BUFFSIZE";
+        if (getenv(hcclBuffSize) == nullptr) {
             OP_LOGD("", "Env HCCL_BUFFSIZE don't set");
         } else {
             try {
-                std::string envStr(getenv(HCCL_BUFFSIZE));
+                std::string envStr(getenv(hcclBuffSize));
                 defaultWindowSize = std::stoi(envStr);
             } catch (const std::invalid_argument &ia) {
                 OP_LOGE("", "Invalid argument when parsing HCCL_BUFFSIZE: %s", ia.what());
diff --git a/csrc/deepep/ops2/op_host/mc2_tiling_utils.h b/csrc/deepep/ops2/op_host/mc2_tiling_utils.h
index 6004ac4b0..bd43f0d28 100644
--- a/csrc/deepep/ops2/op_host/mc2_tiling_utils.h
+++ b/csrc/deepep/ops2/op_host/mc2_tiling_utils.h
@@ -36,15 +36,15 @@ constexpr uint32_t AICPU_BLOCK_DIM_A2 = 6U;
 class Mc2TilingUtils
 {
 public:
-#define HCCL_BUFFSIZE "HCCL_BUFFSIZE"
     static uint64_t GetMaxWindowSize()
     {
         uint16_t defaultWindowSize = 200;
-        if (getenv(HCCL_BUFFSIZE) == nullptr) {
+        const char *hcclBuffSize = getenv("DEEPEP_HCCL_BUFFSIZE") == nullptr ? "HCCL_BUFFSIZE" : "DEEPEP_HCCL_BUFFSIZE";
+        if (getenv(hcclBuffSize) == nullptr) {
             OP_LOGD("", "Env HCCL_BUFFSIZE don't set");
         } else {
             try {
-                std::string envStr(getenv(HCCL_BUFFSIZE));
+                std::string envStr(getenv(hcclBuffSize));
                 defaultWindowSize = std::stoi(envStr);
             } catch (const std::invalid_argument &ia) {
                 OP_LOGE("", "Invalid argument when parsing HCCL_BUFFSIZE: %s", ia.what());
diff --git a/csrc/deepep/ops2/op_host/notify_dispatch_tiling.cc b/csrc/deepep/ops2/op_host/notify_dispatch_tiling.cc
index 29cc5d89b..bdd2234d7 100644
--- a/csrc/deepep/ops2/op_host/notify_dispatch_tiling.cc
+++ b/csrc/deepep/ops2/op_host/notify_dispatch_tiling.cc
@@ -31,15 +31,15 @@ namespace {
 class Mc2TilingUtils
 {
 public:
-#define HCCL_BUFFSIZE "HCCL_BUFFSIZE"
     static uint64_t GetMaxWindowSize()
     {
         uint16_t defaultWindowSize = 200;
-        if (getenv(HCCL_BUFFSIZE) == nullptr) {
+        const char *hcclBuffSize = getenv("DEEPEP_HCCL_BUFFSIZE") == nullptr ? "HCCL_BUFFSIZE" : "DEEPEP_HCCL_BUFFSIZE";
+        if (getenv(hcclBuffSize) == nullptr) {
             OP_LOGD("", "Env HCCL_BUFFSIZE don't set");
         } else {
             try {
-                std::string envStr(getenv(HCCL_BUFFSIZE));
+                std::string envStr(getenv(hcclBuffSize));
                 defaultWindowSize = std::stoi(envStr);
             } catch (const std::invalid_argument &ia) {
                 OP_LOGE("", "Invalid argument when parsing HCCL_BUFFSIZE: %s", ia.what());
diff --git a/csrc/deepep/ops2/op_host/notify_dispatch_tiling_a2.cc b/csrc/deepep/ops2/op_host/notify_dispatch_tiling_a2.cc
index a19420b53..3a4bcbdad 100644
--- a/csrc/deepep/ops2/op_host/notify_dispatch_tiling_a2.cc
+++ b/csrc/deepep/ops2/op_host/notify_dispatch_tiling_a2.cc
@@ -30,15 +30,15 @@ namespace {
 class Mc2TilingUtils
 {
 public:
-#define HCCL_BUFFSIZE "HCCL_BUFFSIZE"
     static uint64_t GetMaxWindowSize()
     {
         uint16_t defaultWindowSize = 200;
-        if (getenv(HCCL_BUFFSIZE) == nullptr) {
+        const char *hcclBuffSize = getenv("DEEPEP_HCCL_BUFFSIZE") == nullptr ? "HCCL_BUFFSIZE" : "DEEPEP_HCCL_BUFFSIZE";
+        if (getenv(hcclBuffSize) == nullptr) {
             OP_LOGD("", "Env HCCL_BUFFSIZE don't set");
         } else {
             try {
-                std::string envStr(getenv(HCCL_BUFFSIZE));
+                std::string envStr(getenv(hcclBuffSize));
                 defaultWindowSize = std::stoi(envStr);
             } catch (const std::invalid_argument &ia) {
                 OP_LOGE("", "Invalid argument when parsing HCCL_BUFFSIZE: %s", ia.what());