I have a rather specific question. I'm trying to learn about linked multi GPU in Vulkan 1.1; the only real source I can find (other than the spec itself) is the following video:

Anyway, each node in the linked configuration gets its own internal heap pointer. You can swizzle the node mask to your liking to make one node pull from another's memory. However, the only way to perform the "swizzling" is to rebind a new VkImage / VkBuffer instance to the same VkDeviceMemory handle (but with a different node configuration). This is effectively aliasing the memory between two instances with identical properties.

I'm curious whether this configuration requires special barriers. How do image barriers work in this case? Does a layout transition on one alias automatically affect the other. I'm coming from DX12 land where placed resources require custom aliasing barriers, and each placed resource has its own independent state. It seems like Vulkan functions a bit differently. 

Thanks.