Does Vulkan support multiple GPUs or multiple GPU acceleration?
There is no multiple GPU support in version 1.0. That was unfortunately a feature Khronos had to cut in order to preserve schedule. It is expected to be near the top of the list for Vulkan 1.1. It is perfectly possible for a Vulkan implementation to expose multiple GPUs. What Vulkan currently can’t do is allow resource sharing between them. So from a point of view of, for example, a Windows system manager, its possible to recognize multiple ways to render to a surface and then use operating system hooks to transfer that to the screen. What Vulkan doesn’t have is the ability to share a texture or a render target between multiple GPUs.