FIELD: information technologies.
SUBSTANCE: semaphore (116) operation controls exclusive memory (114) access which memory is shared by multiple processing elements. Semaphore reservation state for exclusive access of processing element (102a), (102b) is controlled by memory controller. To clear outdated reservation state a command signal is sent for operation of writing into memory with simultaneous protection from memory content updating. Reservation state in controller (104) changes from reservation state to non-reservation state in response of command signal receipt.
EFFECT: system speedup.
17 cl, 3 dwg
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