Fix log level (#5009)

Co-authored-by: Noneflow-ci-bot <69100618+oneflow-ci-bot@users.noreply.github.com>

oneflow/core/device/net_ib_device_descriptor.cpp

@@ -78,22 +78,22 @@ std::shared_ptr<const NetIBDeviceDescriptor> NetIBDeviceDescriptor::Query(int32_
   CHECK(ibv::IsAvailable());
   ibv_device_attr device_attr{};
   if (ibv::wrapper.ibv_query_device(context, &device_attr) != 0) {
-    LOG(WARNING) << "Unable to query device: " << context->device->name;
+    LOG(INFO) << "Unable to query device: " << context->device->name;
     return std::shared_ptr<const NetIBDeviceDescriptor>();
   }
   ibv_port_attr port_attr{};
   if (ibv::wrapper.ibv_query_port_wrap(context, port, &port_attr) != 0) {
-    LOG(WARNING) << "Unable to query port: device " << context->device->name << " port " << port;
+    LOG(INFO) << "Unable to query port: device " << context->device->name << " port " << port;
     return std::shared_ptr<const NetIBDeviceDescriptor>();
   }
   if (port_attr.state != IBV_PORT_ACTIVE) {
-    LOG(WARNING) << "Inactivate port: device " << context->device->name << " port " << port;
+    LOG(INFO) << "Inactivate port: device " << context->device->name << " port " << port;
     return std::shared_ptr<const NetIBDeviceDescriptor>();
   }
   // TODO(liujuncheng): Add IBV_LINK_LAYER_ETHERNET support
   if (port_attr.link_layer != IBV_LINK_LAYER_INFINIBAND) {
-    LOG(WARNING) << "Link layer is not supported: device " << context->device->name << " port "
-                 << port;
+    LOG(INFO) << "Link layer is not supported: device " << context->device->name << " port "
+              << port;
     return std::shared_ptr<const NetIBDeviceDescriptor>();
   }
   auto* desc = new NetIBDeviceDescriptor();

oneflow/core/dl/lib/wrapper.cpp

@@ -41,7 +41,7 @@ std::unique_ptr<DynamicLibrary> DynamicLibrary::Load(const std::vector<std::stri
     void* handle = dlopen(name.c_str(), RTLD_LOCAL | RTLD_NOW);
     if (handle != nullptr) {
       DynamicLibrary* lib = new DynamicLibrary(handle);
-      std::cout << "loaded library: " << lib->AbsolutePath() << "\n";
+      std::cerr << "loaded library: " << lib->AbsolutePath() << "\n";
       return std::unique_ptr<DynamicLibrary>(lib);
     }
   }