On Virtex UltraScale+ HBM devices CCIX is available in System Cache to create a coherent cache for accelerators. This allows transparent data sharing between the accelerators, a server host and external interface attached memory.
On Versal (Premium) devices CCIX is available in System Cache to create a coherent cache for accelerators by connecting to the CPM. Coherency either remains local or the CPM is configured to use CCIX, which allows transparent data sharing between the node and agents.
The system solution is more complex than ACE, but firmware handles all the negotiations and configuration to create a seamless experience from the accelerator point of view. When all firmware negotiations are complete the CCIX link will be activated and programmed with the correct values.