Private Cache Data Modification via Home Node Mediator

The patent introduces a home node as an intermediary that receives modification requests from requester processing devices and forwards them directly to the recipient processing device's private cache. This mediator enables cross-device data modifications without requiring data transfer between private caches or involvement of shared storage, thus maintaining data coherency while reducing latency.

The patent extracts the data modification capability from the traditional shared storage model and enables it to occur directly within the recipient processing device's private cache. By taking out the modification operation from the shared storage path and performing it locally in the private cache, the system eliminates unnecessary data transfers and reduces latency while maintaining coherency through the home node's coordination.

The home node acts as an intermediary that enables the requesting device to access modified data without physically transferring data between private caches. The home node forwards modification requests to the recipient device, which performs modifications locally in its private cache, eliminating energy-intensive data transfers while maintaining data accessibility.

The recipient processing device performs data modifications self-service within its own private cache, eliminating the need to receive or send data to other devices. This self-service approach maintains data accessibility for requesting devices through home node coordination while dramatically reducing power consumption by avoiding data transfers.