Synchronization of system resources in a multi-socket data processing system

A method of synchronizing system resources of a multi-socket data processing system, the method comprising:

• halting, under control of a primary System-on-Chip (SOC), each of a plurality of system resources, wherein each system resource is located in a different SOC of a plurality of SOCS of a multi-SOC system, wherein the primary SOC is one of the plurality of SOCS, and wherein each SOC of the plurality of SOCS is disposed in a different socket;
• writing, using the primary SOC, an updated value to the system resource of another SOC of the plurality of SOCS while halted;
• and
• initiating operation, using the primary SOC, of the system resource in each SOC of the plurality of SOCS subsequent to the writing.

A system for synchronizing system resources of a multi-socket data processing system, the system comprising:

• a plurality of System-on-Chips (SOCS), wherein the plurality of SOCS are interconnected through a communication bus, each SOC includes a plurality of processor cores, one SOC of the plurality of SOCS is designated as a primary SOC, and each SOC of the plurality of SOCS is disposed in a different socket;
• a global synchronization circuit;
• and
• a plurality of sideband channels coupling the global synchronization circuit to each of the plurality of SOCS;
• wherein the primary SOC is configured to provide a trigger event over a first sideband channel of the plurality of sideband channels, the trigger event initiating synchronization of the system resources disposed in the plurality of SOCS;
• and
• wherein the global synchronization circuit is configured to broadcast a synchronization event to each of the plurality of SOCS over a second sideband channel of the plurality of sideband channels in response to receiving the trigger event.