diff --git a/CHANGELOG.md b/CHANGELOG.md
index f08ca3bf42..ccbbe9f64e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@ Please mark all change in change log and use the ticket from JIRA.
 - \#440 - Query API in customization still uses old version
 - \#440 - Server cannot startup with gpu_resource_config.enable=false in GPU version
 - \#458 - Index data is not compatible between 0.5 and 0.6
+- \#486 - gpu no usage during index building
 
 ## Feature
 - \#12 - Pure CPU version for Milvus
@@ -28,6 +29,7 @@ Please mark all change in change log and use the ticket from JIRA.
 - \#226 - Experimental shards middleware for Milvus
 - \#227 - Support new index types SPTAG-KDT and SPTAG-BKT
 - \#346 - Support build index with multiple gpu
+- \#488 - Add log in scheduler/optimizer
 
 ## Improvement
 - \#255 - Add ivfsq8 test report detailed version
diff --git a/ci/jenkins/Jenkinsfile b/ci/jenkins/Jenkinsfile
index 01048bd953..d426666e9d 100644
--- a/ci/jenkins/Jenkinsfile
+++ b/ci/jenkins/Jenkinsfile
@@ -114,7 +114,8 @@ pipeline {
 
                         stage("Deploy to Development") {
                             environment {
-                                HELM_RELEASE_NAME = "${env.PIPELINE_NAME}-${env.SEMVER}-${env.BUILD_NUMBER}-single-${env.BINRARY_VERSION}".toLowerCase()
+                                FROMAT_SEMVER = "${env.SEMVER}".replaceAll(".", "-")
+                                HELM_RELEASE_NAME = "${env.PIPELINE_NAME}-${env.FROMAT_SEMVER}-${env.BUILD_NUMBER}-single-${env.BINRARY_VERSION}".toLowerCase()
                             }
 
                             agent {
@@ -248,7 +249,8 @@ pipeline {
 
                         stage("Deploy to Development") {
                             environment {
-                                HELM_RELEASE_NAME = "${env.PIPELINE_NAME}-${env.SEMVER}-${env.BUILD_NUMBER}-single-${env.BINRARY_VERSION}".toLowerCase()
+                                FROMAT_SEMVER = "${env.SEMVER}".replaceAll(".", "-")
+                                HELM_RELEASE_NAME = "${env.PIPELINE_NAME}-${env.FROMAT_SEMVER}-${env.BUILD_NUMBER}-single-${env.BINRARY_VERSION}".toLowerCase()
                             }
 
                             agent {
diff --git a/core/src/cache/GpuCacheMgr.cpp b/core/src/cache/GpuCacheMgr.cpp
index 72229527fa..1802fb3935 100644
--- a/core/src/cache/GpuCacheMgr.cpp
+++ b/core/src/cache/GpuCacheMgr.cpp
@@ -25,6 +25,7 @@
 namespace milvus {
 namespace cache {
 
+#ifdef MILVUS_GPU_VERSION
 std::mutex GpuCacheMgr::mutex_;
 std::unordered_map<uint64_t, GpuCacheMgrPtr> GpuCacheMgr::instance_;
 
@@ -76,6 +77,7 @@ GpuCacheMgr::GetIndex(const std::string& key) {
     DataObjPtr obj = GetItem(key);
     return obj;
 }
+#endif
 
 }  // namespace cache
 }  // namespace milvus
diff --git a/core/src/cache/GpuCacheMgr.h b/core/src/cache/GpuCacheMgr.h
index 4d434b2cfb..06dd44cca2 100644
--- a/core/src/cache/GpuCacheMgr.h
+++ b/core/src/cache/GpuCacheMgr.h
@@ -25,6 +25,7 @@
 namespace milvus {
 namespace cache {
 
+#ifdef MILVUS_GPU_VERSION
 class GpuCacheMgr;
 using GpuCacheMgrPtr = std::shared_ptr<GpuCacheMgr>;
 
@@ -42,6 +43,7 @@ class GpuCacheMgr : public CacheMgr<DataObjPtr> {
     static std::mutex mutex_;
     static std::unordered_map<uint64_t, GpuCacheMgrPtr> instance_;
 };
+#endif
 
 }  // namespace cache
 }  // namespace milvus
diff --git a/core/src/db/engine/ExecutionEngineImpl.cpp b/core/src/db/engine/ExecutionEngineImpl.cpp
index ca307b90fc..c0ab4e829e 100644
--- a/core/src/db/engine/ExecutionEngineImpl.cpp
+++ b/core/src/db/engine/ExecutionEngineImpl.cpp
@@ -151,6 +151,7 @@ ExecutionEngineImpl::HybridLoad() const {
         return;
     }
 
+#ifdef MILVUS_GPU_VERSION
     const std::string key = location_ + ".quantizer";
 
     server::Config& config = server::Config::GetInstance();
@@ -205,6 +206,7 @@ ExecutionEngineImpl::HybridLoad() const {
         auto cache_quantizer = std::make_shared<CachedQuantizer>(quantizer);
         cache::GpuCacheMgr::GetInstance(best_device_id)->InsertItem(key, cache_quantizer);
     }
+#endif
 }
 
 void
@@ -342,6 +344,7 @@ ExecutionEngineImpl::CopyToGpu(uint64_t device_id, bool hybrid) {
     }
 #endif
 
+#ifdef MILVUS_GPU_VERSION
     auto index = std::static_pointer_cast<VecIndex>(cache::GpuCacheMgr::GetInstance(device_id)->GetIndex(location_));
     bool already_in_cache = (index != nullptr);
     if (already_in_cache) {
@@ -364,16 +367,19 @@ ExecutionEngineImpl::CopyToGpu(uint64_t device_id, bool hybrid) {
     if (!already_in_cache) {
         GpuCache(device_id);
     }
+#endif
 
     return Status::OK();
 }
 
 Status
 ExecutionEngineImpl::CopyToIndexFileToGpu(uint64_t device_id) {
+#ifdef MILVUS_GPU_VERSION
     gpu_num_ = device_id;
     auto to_index_data = std::make_shared<ToIndexData>(PhysicalSize());
     cache::DataObjPtr obj = std::static_pointer_cast<cache::DataObj>(to_index_data);
     milvus::cache::GpuCacheMgr::GetInstance(device_id)->InsertItem(location_, obj);
+#endif
     return Status::OK();
 }
 
@@ -584,15 +590,17 @@ ExecutionEngineImpl::Cache() {
 
 Status
 ExecutionEngineImpl::GpuCache(uint64_t gpu_id) {
+#ifdef MILVUS_GPU_VERSION
     cache::DataObjPtr obj = std::static_pointer_cast<cache::DataObj>(index_);
     milvus::cache::GpuCacheMgr::GetInstance(gpu_id)->InsertItem(location_, obj);
-
+#endif
     return Status::OK();
 }
 
 // TODO(linxj): remove.
 Status
 ExecutionEngineImpl::Init() {
+#ifdef MILVUS_GPU_VERSION
     server::Config& config = server::Config::GetInstance();
     std::vector<int64_t> gpu_ids;
     Status s = config.GetGpuResourceConfigBuildIndexResources(gpu_ids);
@@ -604,6 +612,9 @@ ExecutionEngineImpl::Init() {
 
     std::string msg = "Invalid gpu_num";
     return Status(SERVER_INVALID_ARGUMENT, msg);
+#else
+    return Status::OK();
+#endif
 }
 
 }  // namespace engine
diff --git a/core/src/main.cpp b/core/src/main.cpp
index b39ba87997..5c97a061d2 100644
--- a/core/src/main.cpp
+++ b/core/src/main.cpp
@@ -59,9 +59,9 @@ print_banner() {
 #endif
               << " library." << std::endl;
 #ifdef MILVUS_CPU_VERSION
-    std::cout << "You are using Milvus CPU version" << std::endl;
+    std::cout << "You are using Milvus CPU edition" << std::endl;
 #else
-    std::cout << "You are using Milvus GPU version" << std::endl;
+    std::cout << "You are using Milvus GPU edition" << std::endl;
 #endif
     std::cout << std::endl;
 }
diff --git a/core/src/scheduler/SchedInst.h b/core/src/scheduler/SchedInst.h
index 6273af7a9f..1e8a7acf2e 100644
--- a/core/src/scheduler/SchedInst.h
+++ b/core/src/scheduler/SchedInst.h
@@ -106,6 +106,25 @@ class OptimizerInst {
                 server::Config& config = server::Config::GetInstance();
                 config.GetGpuResourceConfigEnable(enable_gpu);
                 if (enable_gpu) {
+                    std::vector<int64_t> build_gpus;
+                    std::vector<int64_t> search_gpus;
+                    int64_t gpu_search_threshold;
+                    config.GetGpuResourceConfigBuildIndexResources(build_gpus);
+                    config.GetGpuResourceConfigSearchResources(search_gpus);
+                    config.GetEngineConfigGpuSearchThreshold(gpu_search_threshold);
+                    std::string build_msg = "Build index gpu:";
+                    for (auto build_id : build_gpus) {
+                        build_msg.append(" gpu" + std::to_string(build_id));
+                    }
+                    SERVER_LOG_DEBUG << build_msg;
+
+                    std::string search_msg = "Search gpu:";
+                    for (auto search_id : search_gpus) {
+                        search_msg.append(" gpu" + std::to_string(search_id));
+                    }
+                    search_msg.append(". gpu_search_threshold:" + std::to_string(gpu_search_threshold));
+                    SERVER_LOG_DEBUG << search_msg;
+
                     pass_list.push_back(std::make_shared<BuildIndexPass>());
                     pass_list.push_back(std::make_shared<FaissFlatPass>());
                     pass_list.push_back(std::make_shared<FaissIVFFlatPass>());
diff --git a/core/src/scheduler/optimizer/BuildIndexPass.cpp b/core/src/scheduler/optimizer/BuildIndexPass.cpp
index d535b9675f..67036f9d7b 100644
--- a/core/src/scheduler/optimizer/BuildIndexPass.cpp
+++ b/core/src/scheduler/optimizer/BuildIndexPass.cpp
@@ -25,12 +25,13 @@ namespace scheduler {
 
 void
 BuildIndexPass::Init() {
+#ifdef MILVUS_GPU_VERSION
     server::Config& config = server::Config::GetInstance();
-    std::vector<int64_t> build_resources;
-    Status s = config.GetGpuResourceConfigBuildIndexResources(build_resources);
+    Status s = config.GetGpuResourceConfigBuildIndexResources(build_gpu_ids_);
     if (!s.ok()) {
         throw;
     }
+#endif
 }
 
 bool
@@ -38,13 +39,16 @@ BuildIndexPass::Run(const TaskPtr& task) {
     if (task->Type() != TaskType::BuildIndexTask)
         return false;
 
-    if (build_gpu_ids_.empty())
+    if (build_gpu_ids_.empty()) {
+        SERVER_LOG_WARNING << "BuildIndexPass cannot get build index gpu!";
         return false;
+    }
 
     ResourcePtr res_ptr;
     res_ptr = ResMgrInst::GetInstance()->GetResource(ResourceType::GPU, build_gpu_ids_[specified_gpu_id_]);
     auto label = std::make_shared<SpecResLabel>(std::weak_ptr<Resource>(res_ptr));
     task->label() = label;
+    SERVER_LOG_DEBUG << "Specify gpu" << specified_gpu_id_ << " to build index!";
 
     specified_gpu_id_ = (specified_gpu_id_ + 1) % build_gpu_ids_.size();
     return true;
diff --git a/core/src/scheduler/optimizer/BuildIndexPass.h b/core/src/scheduler/optimizer/BuildIndexPass.h
index 4f7117fc4e..3adf1259a7 100644
--- a/core/src/scheduler/optimizer/BuildIndexPass.h
+++ b/core/src/scheduler/optimizer/BuildIndexPass.h
@@ -45,7 +45,7 @@ class BuildIndexPass : public Pass {
 
  private:
     uint64_t specified_gpu_id_ = 0;
-    std::vector<int32_t> build_gpu_ids_;
+    std::vector<int64_t> build_gpu_ids_;
 };
 
 using BuildIndexPassPtr = std::shared_ptr<BuildIndexPass>;
diff --git a/core/src/scheduler/optimizer/FaissFlatPass.cpp b/core/src/scheduler/optimizer/FaissFlatPass.cpp
index 61ca1b9ec9..53256f7790 100644
--- a/core/src/scheduler/optimizer/FaissFlatPass.cpp
+++ b/core/src/scheduler/optimizer/FaissFlatPass.cpp
@@ -29,6 +29,7 @@ namespace scheduler {
 
 void
 FaissFlatPass::Init() {
+#ifdef MILVUS_GPU_VERSION
     server::Config& config = server::Config::GetInstance();
     Status s = config.GetEngineConfigGpuSearchThreshold(threshold_);
     if (!s.ok()) {
@@ -38,6 +39,7 @@ FaissFlatPass::Init() {
     if (!s.ok()) {
         throw;
     }
+#endif
 }
 
 bool
@@ -54,9 +56,11 @@ FaissFlatPass::Run(const TaskPtr& task) {
     auto search_job = std::static_pointer_cast<SearchJob>(search_task->job_.lock());
     ResourcePtr res_ptr;
     if (search_job->nq() < threshold_) {
+        SERVER_LOG_DEBUG << "FaissFlatPass: nq < gpu_search_threshold, specify cpu to search!";
         res_ptr = ResMgrInst::GetInstance()->GetResource("cpu");
     } else {
         auto best_device_id = count_ % gpus.size();
+        SERVER_LOG_DEBUG << "FaissFlatPass: nq > gpu_search_threshold, specify gpu" << best_device_id << " to search!";
         count_++;
         res_ptr = ResMgrInst::GetInstance()->GetResource(ResourceType::GPU, best_device_id);
     }
diff --git a/core/src/scheduler/optimizer/FaissIVFFlatPass.cpp b/core/src/scheduler/optimizer/FaissIVFFlatPass.cpp
index 1f1efb374b..8ad51fb14a 100644
--- a/core/src/scheduler/optimizer/FaissIVFFlatPass.cpp
+++ b/core/src/scheduler/optimizer/FaissIVFFlatPass.cpp
@@ -29,6 +29,7 @@ namespace scheduler {
 
 void
 FaissIVFFlatPass::Init() {
+#ifdef MILVUS_GPU_VERSION
     server::Config& config = server::Config::GetInstance();
     Status s = config.GetEngineConfigGpuSearchThreshold(threshold_);
     if (!s.ok()) {
@@ -38,6 +39,7 @@ FaissIVFFlatPass::Init() {
     if (!s.ok()) {
         throw;
     }
+#endif
 }
 
 bool
@@ -54,9 +56,12 @@ FaissIVFFlatPass::Run(const TaskPtr& task) {
     auto search_job = std::static_pointer_cast<SearchJob>(search_task->job_.lock());
     ResourcePtr res_ptr;
     if (search_job->nq() < threshold_) {
+        SERVER_LOG_DEBUG << "FaissIVFFlatPass: nq < gpu_search_threshold, specify cpu to search!";
         res_ptr = ResMgrInst::GetInstance()->GetResource("cpu");
     } else {
         auto best_device_id = count_ % gpus.size();
+        SERVER_LOG_DEBUG << "FaissIVFFlatPass: nq > gpu_search_threshold, specify gpu" << best_device_id
+                         << " to search!";
         count_++;
         res_ptr = ResMgrInst::GetInstance()->GetResource(ResourceType::GPU, best_device_id);
     }
diff --git a/core/src/scheduler/optimizer/FaissIVFSQ8HPass.cpp b/core/src/scheduler/optimizer/FaissIVFSQ8HPass.cpp
index a99e861e03..cc04944fda 100644
--- a/core/src/scheduler/optimizer/FaissIVFSQ8HPass.cpp
+++ b/core/src/scheduler/optimizer/FaissIVFSQ8HPass.cpp
@@ -29,12 +29,14 @@ namespace scheduler {
 
 void
 FaissIVFSQ8HPass::Init() {
+#ifdef MILVUS_GPU_VERSION
     server::Config& config = server::Config::GetInstance();
     Status s = config.GetEngineConfigGpuSearchThreshold(threshold_);
     if (!s.ok()) {
         threshold_ = std::numeric_limits<int64_t>::max();
     }
     s = config.GetGpuResourceConfigSearchResources(gpus);
+#endif
 }
 
 bool
@@ -51,9 +53,12 @@ FaissIVFSQ8HPass::Run(const TaskPtr& task) {
     auto search_job = std::static_pointer_cast<SearchJob>(search_task->job_.lock());
     ResourcePtr res_ptr;
     if (search_job->nq() < threshold_) {
+        SERVER_LOG_DEBUG << "FaissIVFSQ8HPass: nq < gpu_search_threshold, specify cpu to search!";
         res_ptr = ResMgrInst::GetInstance()->GetResource("cpu");
     } else {
         auto best_device_id = count_ % gpus.size();
+        SERVER_LOG_DEBUG << "FaissIVFSQ8HPass: nq > gpu_search_threshold, specify gpu" << best_device_id
+                         << " to search!";
         count_++;
         res_ptr = ResMgrInst::GetInstance()->GetResource(ResourceType::GPU, best_device_id);
     }
diff --git a/core/src/scheduler/optimizer/FaissIVFSQ8Pass.cpp b/core/src/scheduler/optimizer/FaissIVFSQ8Pass.cpp
index 30dd306b3b..c2a1858966 100644
--- a/core/src/scheduler/optimizer/FaissIVFSQ8Pass.cpp
+++ b/core/src/scheduler/optimizer/FaissIVFSQ8Pass.cpp
@@ -29,6 +29,7 @@ namespace scheduler {
 
 void
 FaissIVFSQ8Pass::Init() {
+#ifdef MILVUS_GPU_VERSION
     server::Config& config = server::Config::GetInstance();
     Status s = config.GetEngineConfigGpuSearchThreshold(threshold_);
     if (!s.ok()) {
@@ -38,6 +39,7 @@ FaissIVFSQ8Pass::Init() {
     if (!s.ok()) {
         throw;
     }
+#endif
 }
 
 bool
@@ -54,9 +56,12 @@ FaissIVFSQ8Pass::Run(const TaskPtr& task) {
     auto search_job = std::static_pointer_cast<SearchJob>(search_task->job_.lock());
     ResourcePtr res_ptr;
     if (search_job->nq() < threshold_) {
+        SERVER_LOG_DEBUG << "FaissIVFSQ8Pass: nq < gpu_search_threshold, specify cpu to search!";
         res_ptr = ResMgrInst::GetInstance()->GetResource("cpu");
     } else {
         auto best_device_id = count_ % gpus.size();
+        SERVER_LOG_DEBUG << "FaissIVFSQ8Pass: nq > gpu_search_threshold, specify gpu" << best_device_id
+                         << " to search!";
         count_++;
         res_ptr = ResMgrInst::GetInstance()->GetResource(ResourceType::GPU, best_device_id);
     }
diff --git a/core/src/scheduler/optimizer/FallbackPass.cpp b/core/src/scheduler/optimizer/FallbackPass.cpp
index 2e275ede4b..15687bb9bb 100644
--- a/core/src/scheduler/optimizer/FallbackPass.cpp
+++ b/core/src/scheduler/optimizer/FallbackPass.cpp
@@ -33,6 +33,7 @@ FallbackPass::Run(const TaskPtr& task) {
         return false;
     }
     // NEVER be empty
+    SERVER_LOG_DEBUG << "FallbackPass!";
     auto cpu = ResMgrInst::GetInstance()->GetCpuResources()[0];
     auto label = std::make_shared<SpecResLabel>(cpu);
     task->label() = label;
diff --git a/core/src/scheduler/task/BuildIndexTask.cpp b/core/src/scheduler/task/BuildIndexTask.cpp
index f561fa947d..e952bd0938 100644
--- a/core/src/scheduler/task/BuildIndexTask.cpp
+++ b/core/src/scheduler/task/BuildIndexTask.cpp
@@ -85,7 +85,7 @@ XBuildIndexTask::Load(milvus::scheduler::LoadType type, uint8_t device_id) {
 
         size_t file_size = to_index_engine_->PhysicalSize();
 
-        std::string info = "Load file id:" + std::to_string(file_->id_) +
+        std::string info = "Load file id:" + std::to_string(file_->id_) + " " + type_str +
                            " file type:" + std::to_string(file_->file_type_) + " size:" + std::to_string(file_size) +
                            " bytes from location: " + file_->location_ + " totally cost";
         double span = rc.ElapseFromBegin(info);
diff --git a/core/src/server/Config.cpp b/core/src/server/Config.cpp
index 5465c6c505..95bab84391 100644
--- a/core/src/server/Config.cpp
+++ b/core/src/server/Config.cpp
@@ -182,6 +182,7 @@ Config::ValidateConfig() {
         return s;
     }
 
+#ifdef MILVUS_GPU_VERSION
     int64_t engine_gpu_search_threshold;
     s = GetEngineConfigGpuSearchThreshold(engine_gpu_search_threshold);
     if (!s.ok()) {
@@ -195,7 +196,6 @@ Config::ValidateConfig() {
         return s;
     }
 
-#ifdef MILVUS_GPU_VERSION
     if (gpu_resource_enable) {
         int64_t resource_cache_capacity;
         s = GetGpuResourceConfigCacheCapacity(resource_cache_capacity);
@@ -325,13 +325,13 @@ Config::ResetDefaultConfig() {
         return s;
     }
 
+#ifdef MILVUS_GPU_VERSION
+    /* gpu resource config */
     s = SetEngineConfigGpuSearchThreshold(CONFIG_ENGINE_GPU_SEARCH_THRESHOLD_DEFAULT);
     if (!s.ok()) {
         return s;
     }
 
-    /* gpu resource config */
-#ifdef MILVUS_GPU_VERSION
     s = SetGpuResourceConfigEnable(CONFIG_GPU_RESOURCE_ENABLE_DEFAULT);
     if (!s.ok()) {
         return s;
@@ -632,6 +632,7 @@ Config::CheckEngineConfigOmpThreadNum(const std::string& value) {
     return Status::OK();
 }
 
+#ifdef MILVUS_GPU_VERSION
 Status
 Config::CheckEngineConfigGpuSearchThreshold(const std::string& value) {
     if (!ValidationUtil::ValidateStringIsNumber(value).ok()) {
@@ -761,6 +762,7 @@ Config::CheckGpuResourceConfigBuildIndexResources(const std::vector<std::string>
 
     return Status::OK();
 }
+#endif
 
 ////////////////////////////////////////////////////////////////////////////////
 ConfigNode&
@@ -981,6 +983,7 @@ Config::GetEngineConfigOmpThreadNum(int64_t& value) {
     return Status::OK();
 }
 
+#ifdef MILVUS_GPU_VERSION
 Status
 Config::GetEngineConfigGpuSearchThreshold(int64_t& value) {
     std::string str =
@@ -1097,6 +1100,7 @@ Config::GetGpuResourceConfigBuildIndexResources(std::vector<int64_t>& value) {
     }
     return Status::OK();
 }
+#endif
 
 ///////////////////////////////////////////////////////////////////////////////
 /* server config */
@@ -1284,6 +1288,8 @@ Config::SetEngineConfigOmpThreadNum(const std::string& value) {
     return Status::OK();
 }
 
+#ifdef MILVUS_GPU_VERSION
+/* gpu resource config */
 Status
 Config::SetEngineConfigGpuSearchThreshold(const std::string& value) {
     Status s = CheckEngineConfigGpuSearchThreshold(value);
@@ -1294,7 +1300,6 @@ Config::SetEngineConfigGpuSearchThreshold(const std::string& value) {
     return Status::OK();
 }
 
-/* gpu resource config */
 Status
 Config::SetGpuResourceConfigEnable(const std::string& value) {
     Status s = CheckGpuResourceConfigEnable(value);
@@ -1348,6 +1353,7 @@ Config::SetGpuResourceConfigBuildIndexResources(const std::string& value) {
     SetConfigValueInMem(CONFIG_GPU_RESOURCE, CONFIG_GPU_RESOURCE_BUILD_INDEX_RESOURCES, value);
     return Status::OK();
 }  // namespace server
+#endif
 
 }  // namespace server
 }  // namespace milvus
diff --git a/core/src/server/Config.h b/core/src/server/Config.h
index 0907080a6f..281a832d57 100644
--- a/core/src/server/Config.h
+++ b/core/src/server/Config.h
@@ -170,6 +170,8 @@ class Config {
     CheckEngineConfigUseBlasThreshold(const std::string& value);
     Status
     CheckEngineConfigOmpThreadNum(const std::string& value);
+
+#ifdef MILVUS_GPU_VERSION
     Status
     CheckEngineConfigGpuSearchThreshold(const std::string& value);
 
@@ -184,6 +186,7 @@ class Config {
     CheckGpuResourceConfigSearchResources(const std::vector<std::string>& value);
     Status
     CheckGpuResourceConfigBuildIndexResources(const std::vector<std::string>& value);
+#endif
 
     std::string
     GetConfigStr(const std::string& parent_key, const std::string& child_key, const std::string& default_value = "");
@@ -239,6 +242,8 @@ class Config {
     GetEngineConfigUseBlasThreshold(int64_t& value);
     Status
     GetEngineConfigOmpThreadNum(int64_t& value);
+
+#ifdef MILVUS_GPU_VERSION
     Status
     GetEngineConfigGpuSearchThreshold(int64_t& value);
 
@@ -253,6 +258,7 @@ class Config {
     GetGpuResourceConfigSearchResources(std::vector<int64_t>& value);
     Status
     GetGpuResourceConfigBuildIndexResources(std::vector<int64_t>& value);
+#endif
 
  public:
     /* server config */
@@ -300,6 +306,8 @@ class Config {
     SetEngineConfigUseBlasThreshold(const std::string& value);
     Status
     SetEngineConfigOmpThreadNum(const std::string& value);
+
+#ifdef MILVUS_GPU_VERSION
     Status
     SetEngineConfigGpuSearchThreshold(const std::string& value);
 
@@ -314,6 +322,7 @@ class Config {
     SetGpuResourceConfigSearchResources(const std::string& value);
     Status
     SetGpuResourceConfigBuildIndexResources(const std::string& value);
+#endif
 
  private:
     std::unordered_map<std::string, std::unordered_map<std::string, std::string>> config_map_;
diff --git a/core/src/server/Server.cpp b/core/src/server/Server.cpp
index 5676504722..169463080e 100644
--- a/core/src/server/Server.cpp
+++ b/core/src/server/Server.cpp
@@ -183,7 +183,11 @@ Server::Start() {
 
         // print version information
         SERVER_LOG_INFO << "Milvus " << BUILD_TYPE << " version: v" << MILVUS_VERSION << ", built at " << BUILD_TIME;
-
+#ifdef MILVUS_CPU_VERSION
+        SERVER_LOG_INFO << "CPU edition";
+#else
+        SERVER_LOG_INFO << "GPU edition";
+#endif
         server::Metrics::GetInstance().Init();
         server::SystemInfo::GetInstance().Init();
 
diff --git a/core/src/utils/StringHelpFunctions.h b/core/src/utils/StringHelpFunctions.h
index 3a41e53f4b..51812fae40 100644
--- a/core/src/utils/StringHelpFunctions.h
+++ b/core/src/utils/StringHelpFunctions.h
@@ -30,9 +30,13 @@ class StringHelpFunctions {
     StringHelpFunctions() = default;
 
  public:
+    // trim blanks from begin and end
+    // "  a b c  "  =>  "a b c"
     static void
     TrimStringBlank(std::string& string);
 
+    // trim quotes from begin and end
+    // "'abc'"  =>  "abc"
     static void
     TrimStringQuote(std::string& string, const std::string& qoute);
 
@@ -46,6 +50,8 @@ class StringHelpFunctions {
     static void
     SplitStringByDelimeter(const std::string& str, const std::string& delimeter, std::vector<std::string>& result);
 
+    // merge strings with delimeter
+    // "a", "b", "c"  => "a,b,c"
     static void
     MergeStringWithDelimeter(const std::vector<std::string>& strs, const std::string& delimeter, std::string& result);
 
diff --git a/core/src/utils/ValidationUtil.cpp b/core/src/utils/ValidationUtil.cpp
index 12b2372fc5..2d1a0e257e 100644
--- a/core/src/utils/ValidationUtil.cpp
+++ b/core/src/utils/ValidationUtil.cpp
@@ -218,10 +218,9 @@ ValidationUtil::ValidateGpuIndex(int32_t gpu_index) {
     return Status::OK();
 }
 
+#ifdef MILVUS_GPU_VERSION
 Status
 ValidationUtil::GetGpuMemory(int32_t gpu_index, size_t& memory) {
-#ifdef MILVUS_GPU_VERSION
-
     cudaDeviceProp deviceProp;
     auto cuda_err = cudaGetDeviceProperties(&deviceProp, gpu_index);
     if (cuda_err) {
@@ -232,10 +231,9 @@ ValidationUtil::GetGpuMemory(int32_t gpu_index, size_t& memory) {
     }
 
     memory = deviceProp.totalGlobalMem;
-#endif
-
     return Status::OK();
 }
+#endif
 
 Status
 ValidationUtil::ValidateIpAddress(const std::string& ip_address) {
diff --git a/core/src/utils/ValidationUtil.h b/core/src/utils/ValidationUtil.h
index ab32c35c40..bc523654e5 100644
--- a/core/src/utils/ValidationUtil.h
+++ b/core/src/utils/ValidationUtil.h
@@ -64,8 +64,10 @@ class ValidationUtil {
     static Status
     ValidateGpuIndex(int32_t gpu_index);
 
+#ifdef MILVUS_GPU_VERSION
     static Status
     GetGpuMemory(int32_t gpu_index, size_t& memory);
+#endif
 
     static Status
     ValidateIpAddress(const std::string& ip_address);
diff --git a/core/unittest/db/utils.cpp b/core/unittest/db/utils.cpp
index afa1d39006..293eeccc69 100644
--- a/core/unittest/db/utils.cpp
+++ b/core/unittest/db/utils.cpp
@@ -132,8 +132,8 @@ BaseTest::SetUp() {
 void
 BaseTest::TearDown() {
     milvus::cache::CpuCacheMgr::GetInstance()->ClearCache();
-    milvus::cache::GpuCacheMgr::GetInstance(0)->ClearCache();
 #ifdef MILVUS_GPU_VERSION
+    milvus::cache::GpuCacheMgr::GetInstance(0)->ClearCache();
     knowhere::FaissGpuResourceMgr::GetInstance().Free();
 #endif
 }
diff --git a/core/unittest/scheduler/test_scheduler.cpp b/core/unittest/scheduler/test_scheduler.cpp
index 72538113c3..c839307958 100644
--- a/core/unittest/scheduler/test_scheduler.cpp
+++ b/core/unittest/scheduler/test_scheduler.cpp
@@ -98,24 +98,25 @@ class SchedulerTest : public testing::Test {
  protected:
     void
     SetUp() override {
+        res_mgr_ = std::make_shared<ResourceMgr>();
+        ResourcePtr disk = ResourceFactory::Create("disk", "DISK", 0, true, false);
+        ResourcePtr cpu = ResourceFactory::Create("cpu", "CPU", 0, true, false);
+        disk_resource_ = res_mgr_->Add(std::move(disk));
+        cpu_resource_ = res_mgr_->Add(std::move(cpu));
+
+#ifdef MILVUS_GPU_VERSION
         constexpr int64_t cache_cap = 1024 * 1024 * 1024;
         cache::GpuCacheMgr::GetInstance(0)->SetCapacity(cache_cap);
         cache::GpuCacheMgr::GetInstance(1)->SetCapacity(cache_cap);
-
-        ResourcePtr disk = ResourceFactory::Create("disk", "DISK", 0, true, false);
-        ResourcePtr cpu = ResourceFactory::Create("cpu", "CPU", 0, true, false);
         ResourcePtr gpu_0 = ResourceFactory::Create("gpu0", "GPU", 0);
         ResourcePtr gpu_1 = ResourceFactory::Create("gpu1", "GPU", 1);
-
-        res_mgr_ = std::make_shared<ResourceMgr>();
-        disk_resource_ = res_mgr_->Add(std::move(disk));
-        cpu_resource_ = res_mgr_->Add(std::move(cpu));
         gpu_resource_0_ = res_mgr_->Add(std::move(gpu_0));
         gpu_resource_1_ = res_mgr_->Add(std::move(gpu_1));
 
         auto PCIE = Connection("IO", 11000.0);
         res_mgr_->Connect("cpu", "gpu0", PCIE);
         res_mgr_->Connect("cpu", "gpu1", PCIE);
+#endif
 
         scheduler_ = std::make_shared<Scheduler>(res_mgr_);
 
@@ -138,17 +139,6 @@ class SchedulerTest : public testing::Test {
     std::shared_ptr<Scheduler> scheduler_;
 };
 
-void
-insert_dummy_index_into_gpu_cache(uint64_t device_id) {
-    MockVecIndex* mock_index = new MockVecIndex();
-    mock_index->ntotal_ = 1000;
-    engine::VecIndexPtr index(mock_index);
-
-    cache::DataObjPtr obj = std::static_pointer_cast<cache::DataObj>(index);
-
-    cache::GpuCacheMgr::GetInstance(device_id)->InsertItem("location", obj);
-}
-
 class SchedulerTest2 : public testing::Test {
  protected:
     void
@@ -157,16 +147,13 @@ class SchedulerTest2 : public testing::Test {
         ResourcePtr cpu0 = ResourceFactory::Create("cpu0", "CPU", 0, true, false);
         ResourcePtr cpu1 = ResourceFactory::Create("cpu1", "CPU", 1, true, false);
         ResourcePtr cpu2 = ResourceFactory::Create("cpu2", "CPU", 2, true, false);
-        ResourcePtr gpu0 = ResourceFactory::Create("gpu0", "GPU", 0, true, true);
-        ResourcePtr gpu1 = ResourceFactory::Create("gpu1", "GPU", 1, true, true);
 
         res_mgr_ = std::make_shared<ResourceMgr>();
         disk_ = res_mgr_->Add(std::move(disk));
         cpu_0_ = res_mgr_->Add(std::move(cpu0));
         cpu_1_ = res_mgr_->Add(std::move(cpu1));
         cpu_2_ = res_mgr_->Add(std::move(cpu2));
-        gpu_0_ = res_mgr_->Add(std::move(gpu0));
-        gpu_1_ = res_mgr_->Add(std::move(gpu1));
+
         auto IO = Connection("IO", 5.0);
         auto PCIE1 = Connection("PCIE", 11.0);
         auto PCIE2 = Connection("PCIE", 20.0);
@@ -174,8 +161,15 @@ class SchedulerTest2 : public testing::Test {
         res_mgr_->Connect("cpu0", "cpu1", IO);
         res_mgr_->Connect("cpu1", "cpu2", IO);
         res_mgr_->Connect("cpu0", "cpu2", IO);
+
+#ifdef MILVUS_GPU_VERSION
+        ResourcePtr gpu0 = ResourceFactory::Create("gpu0", "GPU", 0, true, true);
+        ResourcePtr gpu1 = ResourceFactory::Create("gpu1", "GPU", 1, true, true);
+        gpu_0_ = res_mgr_->Add(std::move(gpu0));
+        gpu_1_ = res_mgr_->Add(std::move(gpu1));
         res_mgr_->Connect("cpu1", "gpu0", PCIE1);
         res_mgr_->Connect("cpu2", "gpu1", PCIE2);
+#endif
 
         scheduler_ = std::make_shared<Scheduler>(res_mgr_);
 
diff --git a/core/unittest/server/test_cache.cpp b/core/unittest/server/test_cache.cpp
index 67e9664d2c..92e09d4a26 100644
--- a/core/unittest/server/test_cache.cpp
+++ b/core/unittest/server/test_cache.cpp
@@ -175,6 +175,7 @@ TEST(CacheTest, CPU_CACHE_TEST) {
     cpu_mgr->PrintInfo();
 }
 
+#ifdef MILVUS_GPU_VERSION
 TEST(CacheTest, GPU_CACHE_TEST) {
     auto gpu_mgr = milvus::cache::GpuCacheMgr::GetInstance(0);
 
@@ -202,6 +203,7 @@ TEST(CacheTest, GPU_CACHE_TEST) {
     gpu_mgr->ClearCache();
     ASSERT_EQ(gpu_mgr->ItemCount(), 0);
 }
+#endif
 
 TEST(CacheTest, INVALID_TEST) {
     {
diff --git a/core/unittest/server/test_config.cpp b/core/unittest/server/test_config.cpp
index 664a08d631..791876ee8b 100644
--- a/core/unittest/server/test_config.cpp
+++ b/core/unittest/server/test_config.cpp
@@ -25,6 +25,8 @@
 #include "utils/StringHelpFunctions.h"
 #include "utils/ValidationUtil.h"
 
+#include <limits>
+
 namespace {
 
 static constexpr uint64_t KB = 1024;
@@ -63,9 +65,21 @@ TEST_F(ConfigTest, CONFIG_TEST) {
     int64_t port = server_config.GetInt64Value("port");
     ASSERT_NE(port, 0);
 
-    server_config.SetValue("test", "2.5");
-    double test = server_config.GetDoubleValue("test");
-    ASSERT_EQ(test, 2.5);
+    server_config.SetValue("float_test", "2.5");
+    double dbl = server_config.GetDoubleValue("float_test");
+    ASSERT_LE(abs(dbl - 2.5), std::numeric_limits<double>::epsilon());
+    float flt = server_config.GetFloatValue("float_test");
+    ASSERT_LE(abs(flt - 2.5), std::numeric_limits<float>::epsilon());
+
+    server_config.SetValue("bool_test", "true");
+    bool blt = server_config.GetBoolValue("bool_test");
+    ASSERT_TRUE(blt);
+
+    server_config.SetValue("int_test", "34");
+    int32_t it32 = server_config.GetInt32Value("int_test");
+    ASSERT_EQ(it32, 34);
+    int64_t it64 = server_config.GetInt64Value("int_test");
+    ASSERT_EQ(it64, 34);
 
     milvus::server::ConfigNode fake;
     server_config.AddChild("fake", fake);
@@ -236,6 +250,7 @@ TEST_F(ConfigTest, SERVER_CONFIG_VALID_TEST) {
     ASSERT_TRUE(s.ok());
     ASSERT_TRUE(int64_val == engine_omp_thread_num);
 
+#ifdef MILVUS_GPU_VERSION
     int64_t engine_gpu_search_threshold = 800;
     s = config.SetEngineConfigGpuSearchThreshold(std::to_string(engine_gpu_search_threshold));
     ASSERT_TRUE(s.ok());
@@ -251,7 +266,6 @@ TEST_F(ConfigTest, SERVER_CONFIG_VALID_TEST) {
     ASSERT_TRUE(s.ok());
     ASSERT_TRUE(bool_val == resource_enable_gpu);
 
-#ifdef MILVUS_GPU_VERSION
     int64_t gpu_cache_capacity = 1;
     s = config.SetGpuResourceConfigCacheCapacity(std::to_string(gpu_cache_capacity));
     ASSERT_TRUE(s.ok());
@@ -389,6 +403,7 @@ TEST_F(ConfigTest, SERVER_CONFIG_INVALID_TEST) {
     s = config.SetEngineConfigOmpThreadNum("10000");
     ASSERT_FALSE(s.ok());
 
+#ifdef MILVUS_GPU_VERSION
     s = config.SetEngineConfigGpuSearchThreshold("-1");
     ASSERT_FALSE(s.ok());
 
@@ -396,7 +411,6 @@ TEST_F(ConfigTest, SERVER_CONFIG_INVALID_TEST) {
     s = config.SetGpuResourceConfigEnable("ok");
     ASSERT_FALSE(s.ok());
 
-#ifdef MILVUS_GPU_VERSION
     s = config.SetGpuResourceConfigCacheCapacity("a");
     ASSERT_FALSE(s.ok());
     s = config.SetGpuResourceConfigCacheCapacity("128");
diff --git a/core/unittest/server/test_rpc.cpp b/core/unittest/server/test_rpc.cpp
index 5753c68422..e04411fad3 100644
--- a/core/unittest/server/test_rpc.cpp
+++ b/core/unittest/server/test_rpc.cpp
@@ -313,6 +313,9 @@ TEST_F(RpcHandlerTest, TABLES_TEST) {
     std::vector<std::vector<float>> record_array;
     BuildVectors(0, VECTOR_COUNT, record_array);
     ::milvus::grpc::VectorIds vector_ids;
+    for (int64_t i = 0; i <  VECTOR_COUNT; i++) {
+        vector_ids.add_vector_id_array(i);
+    }
     // Insert vectors
     // test invalid table name
     handler->Insert(&context, &request, &vector_ids);
diff --git a/core/unittest/server/test_util.cpp b/core/unittest/server/test_util.cpp
index e5884cac65..01cf713bcd 100644
--- a/core/unittest/server/test_util.cpp
+++ b/core/unittest/server/test_util.cpp
@@ -120,7 +120,13 @@ TEST(UtilTest, STRINGFUNCTIONS_TEST) {
     milvus::server::StringHelpFunctions::SplitStringByDelimeter(str, ",", result);
     ASSERT_EQ(result.size(), 3UL);
 
+    std::string merge_str;
+    milvus::server::StringHelpFunctions::MergeStringWithDelimeter(result, ",", merge_str);
+    ASSERT_EQ(merge_str, "a,b,c");
     result.clear();
+    milvus::server::StringHelpFunctions::MergeStringWithDelimeter(result, ",", merge_str);
+    ASSERT_TRUE(merge_str.empty());
+
     auto status = milvus::server::StringHelpFunctions::SplitStringByQuote(str, ",", "\"", result);
     ASSERT_TRUE(status.ok());
     ASSERT_EQ(result.size(), 3UL);
@@ -211,6 +217,11 @@ TEST(UtilTest, STATUS_TEST) {
     str = status.ToString();
     ASSERT_FALSE(str.empty());
 
+    status = milvus::Status(milvus::DB_INVALID_PATH, "mistake");
+    ASSERT_EQ(status.code(), milvus::DB_INVALID_PATH);
+    str = status.ToString();
+    ASSERT_FALSE(str.empty());
+
     status = milvus::Status(milvus::DB_META_TRANSACTION_FAILED, "mistake");
     ASSERT_EQ(status.code(), milvus::DB_META_TRANSACTION_FAILED);
     str = status.ToString();
@@ -261,6 +272,10 @@ TEST(ValidationUtilTest, VALIDATE_TABLENAME_TEST) {
     table_name = std::string(10000, 'a');
     status = milvus::server::ValidationUtil::ValidateTableName(table_name);
     ASSERT_EQ(status.code(), milvus::SERVER_INVALID_TABLE_NAME);
+
+    table_name = "";
+    status = milvus::server::ValidationUtil::ValidatePartitionName(table_name);
+    ASSERT_EQ(status.code(), milvus::SERVER_INVALID_TABLE_NAME);
 }
 
 TEST(ValidationUtilTest, VALIDATE_DIMENSION_TEST) {