Cache storage hierarchy for a multiprocessor system

摘要: In a multiprocessor (MP) system each processor (CP) has an associated store-in-buffer cache (BCE) whose set-associative classes (lines) are designated exclusive (EX) or shareable by all processors (RO). The directories (PD) addressed the non-translatable address part and some bits of translatable so that synonyms occur. Accesses to its either flagged for store instructions operand fetches (RO) instruction fetches. To reduce number castouts in case conflicts shareability new line brought after miss is determined from original shareability, type access be performed change status line. An (operand) fetch copy which remote changed RO if no changes have been made A synonym own is, duplicated speed up further accesses. Synonym detection caches parallel permuting bits. For faster operation directory (CD) used cross-interrogation.