ВИЗНАЧЕННЯ ВПЛИВУ ОНОВЛЕННЯ ПРОГРАМНОГО ЗАБЕЗПЕЧЕННЯ НА ПОКАЗНИКИ НАДіЙНОСТі ВіДМОВОСТіЙКОї БАГАТОПРОЦЕСОРНОї СИСТЕМИ

This article outlines a Fault-Tolerant Multiprocessor System, designed for prolonged uninterrupted operation. During system operation software is updated with new versions, ensuring the increase of system reliability. The discussed model of the Fault-Tolerant Multiprocessor System is proposed to define reliability mesures.The designincludes two multiprocessor systems (main and reserve), processors with a joint sliding reserve, a control processor and system diagnostics.The model accounts for a software double update, as well as for automatic system reset after default caused by the hardware failures.The duration of faultless performance of the fault-tolerant multiprocessor system is calculated, and compared betweentwo models: the proposed one, which takes into account the software update, and another well-known model, which does not include software updates