Multiprocessor with independent direct cache-to-cache data transfers.

摘要

In a data processing system having multiple processors with individual cache stores, a cross-interrogation is made in other caches if requested data is not found in the local associated cache. Data paths (67, 74, 83, 86, 201, 202, 203, 207,208) and communication controls (20, 21, 22, 23, 50, 76, 77) are provided to enable direct cache-to-cache and cache-to-channel data transfers thus saving main storage accesses and the necessity to wait for main storage availability.