Vmware, Inc.

Nikolay Kolev Georgiev

Ittai Abraham

Danail Grigorov

Toly Kournik

Yehonatan Buchnik

Nikhil Kumar

The present disclosure is directed to a novel reconfiguration framework for a BFT SMR system. With this framework, the configuration of both the system itself and the clients of the system can be modified in a live manner (i.e., without taking the system offline) while preserving correct system operation.

Reconfiguration framework for byzantine fault tolerant (BFT) state machine replication (SMR) systems

An algorithm for efficiently maintaining a globally uniform-in-time execution schedule for a dynamically changing set of periodic workload instances is provided. At a high level, the algorithm operates by gradually adjusting execution start times in the schedule until they converge to a globally uniform state. In certain embodiments, the algorithm exhibits the property of 'quick convergence,' which means that regardless of the number of periodic workload instances added or removed, the execution start times for all workload instances in the schedule will typically converge to a globally uniform state within a single cycle length from the time of the addition/removal event(s) (subject to a tunable “aggressiveness” parameter).

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Sofia, Bulgaria

Nikolay Kolev Georgiev