System event broadcast synchronization across hierarchical interfaces

A system comprising:

• a plurality of chips interconnected in a hierarchy through a plurality of communication interfaces;
• and
• a chip of the hierarchy is configured to:
• assign a centralized event tag to each of the communication interfaces of the chip;
• determine whether to accept or drop a message associated with an event received at one of the communication interfaces of the chip based on comparing a local centralized event tag with a received centralized event tag;
• and
• update the local centralized event tag based on one or more advancing rules to maintain event synchronization between the chip and the plurality of chips.

A computer program product comprising a non-transitory computer readable storage medium having program instructions embodied therewith, the program instructions executable by one or more processors to cause the one or more processors to perform operations comprising:

• assigning a centralized event tag to each communication interface of a plurality of communication interfaces of a chip interconnected in a hierarchy through the communication interfaces to a plurality of chips in a multiprocessing system;
• determining whether to accept or drop a message associated with an event received at one of the communication interfaces of the chip based on comparing a local centralized event tag with a received centralized event tag;
• and
• updating the local centralized event tag based on one or more advancing rules to maintain event synchronization between the chip and the plurality of chips.