Abstract. This paper proposes decentralized processes for synchronizing the actions of a
distributed group of active components (objects) in supercomputers and computer clusters, allowing
them to move to specified states or influence the external environment synchronously. The object
action depends on the current state of the object and the external environment. The actions should
start with a minimum delay after the possibility of their execution is detected. Synchronization
is performed by exchanging optical signals over wireless communication channels through an optical
signal repeater, combining one group of objects or sequences of groups of objects (layers).
Accurate distance measurement performs the compensation of possible changes in distances between
objects. Group operations accelerate synchronization and simultaneously receive data from a group of
distributed objects. Data processing occurs during their transfer, without increasing the time. The
operation time does not depend on the quantity of data processed by the operation. A group
operation is performed in a repeater containing no computational means.