Multiprocessor chip having bidirectional ring interconnect

A semiconductor chip comprising:

• a plurality of processors;
• an address space shared between the plurality of processors;
• and
• a bidirectional ring structure to couple to the plurality of processors and the address space.

A system comprising:

• a multiprocessor chip comprising
• at least one central processing unit,
• a shared address space, and
• at least one bidirectional ring structure to couple the at least one central processor unit and agents of the shared address space;
• and
• a bus to transport packets from the multiprocessor chip.

A method comprising:

• calculating distances on first and second ring structures on a chip between a source node and a destination node;
• determining on which of the first and second ring structures to transport a packet between the source and destination nodes based on the calculated distances;
• and
• transporting the packet from the source node to the destination node on the determined ring structure.

A machine readable medium having stored thereon a plurality of executable instructions to perform a method comprising:

• calculating distances along a plurality of ring structures on a chip between a source node and a destination node;
• identifying on which of the plurality of ring structures to transport a packet between the source and destination nodes according to the calculated distances;
• and
• transporting the packet from the source node to the destination node on the identified ring structure.