MULTIPROCESSOR SYSTEM, SYSTEM BOARD, AND CACHE REPLACEMENT REQUEST PROCESSING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a technique which prevents a load from applying to a global bus by a cache replacement request related with a multiprocessor system. SOLUTION: A request issued from a CPU 120a is output from a local arbiter 113 through a CPU bus 130a and a CPU issued request queue 112a. A cache replacement request loop-back circuit 140 determines whether an output request is a cache replacement request by a loop-back determination circuit 141. A requests other than the cache replacement request is output to the local bus 300a. The cache replacement request is output to a selector 142 and sent to a request processing part 114 at the timing without any effective request in the global bus 301. COPYRIGHT: (C)2008,JPO&INPIT