Triple software redundancy fault tolerant framework architecture

Abstract

A computer implemented method of detecting a fault in a system comprises the steps of executing at least three virtual machines, each virtual machine executing a same application software, in separated and isolated memory segments and in a dedicated core of a multi-core processor; the virtual machines being synchronized and concurrently executed by a common hypervisor; wherein non-faulty virtual machines provide an identical output message within a predefined time-interval; detecting a fault in an output of a virtual machine, the fault corresponding to a different output message of the faulty virtual machine. Developments include a distributed vote mechanism, pull/push mechanisms, association of output vote messages with a safety extension comprising identification information, virtual machine recovery using data context.

Dependencies are inferred from the claim text.