INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD

INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD

An information processing device (100) includes a plurality of CPUs (1), a plurality of cache memories (2) associated with the plurality of CPUs (1), and a main memory (3), each of the plurality of CPUs (1) acquires a lock for exclusively accessing data in the main memory (3), and then accesses the...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: Nakamura, Yuuichi
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Zusammenfassung:An information processing device (100) includes a plurality of CPUs (1), a plurality of cache memories (2) associated with the plurality of CPUs (1), and a main memory (3), each of the plurality of CPUs (1) acquires a lock for exclusively accessing data in the main memory (3), and then accesses the data, data related to access of a corresponding CPU (1) and a lock ID for specifying the lock related to the access are associated and written in a cache 10 line of each of the plurality of cache memories (2), and a cache line of each of the plurality of cache memories (2) is flushed when a CPU (1) other than the corresponding CPU (1) acquires the lock specified based on the lock ID written in the cache line.