[RUNTIME] Fault tolerant vulkan init error (#1107)

src/runtime/vulkan/vulkan_device_api.cc

@@ -661,6 +661,7 @@ void VulkanWorkspace::Init() {
   std::lock_guard<std::mutex> lock(this->mu);
   if (initialized_) return;
   initialized_ = true;
+  try {
     instance_ = CreateInstance();
     context_ = GetContext(instance_);
     LOG(INFO) << "Initialzie Vulkan with " << context_.size() << " devices..";
@@ -669,6 +670,10 @@ void VulkanWorkspace::Init() {
                 <<  ")=\'" << context_[i].phy_device_prop.deviceName
                 << "\' phy_dev_id=" << context_[i].phy_device;
     }
+  } catch (const dmlc::Error& err) {
+    LOG(INFO) << "Cannot initialize vulkan: " << err.what() << "\n"
+              << "You can still compile vulkan module but cannot run locally";
+  }
 }
 
 bool InitVulkan(TVMArgs args, TVMRetValue* rv) {