HOW TO USE VULKAN Set up is omitted. Procedure make ash instance set up glfw choose and check physical device physical device means GPU make logical device logical device Words instance the instance to operate vulkan. all operation about vulkan is via instance. physical device the graphic cards. e.g. GPU logical device the virtual memory supplied by the OS queue the command for the physical device. We need to know the GPU how many queues has and what function the queue has.