libvulkan1 1.0.21.0+dfsg1-1~16.04.1 (s390x binary) in ubuntu xenial

 The Loader implements the main VK library. It handles layer management and
 driver management. The loader fully supports multi-gpu operation. As part of
 this, it dispatches API calls to the correct driver, and to the correct
 layers, based on the GPU object selected by the application.
 .
 This package includes the loader library.