Using local storage to handle multiple outstanding requests in a SCI system

A method of managing, by a controller, a plurality of entries that are each associated with a respective packet of a plurality of response packets and a plurality of requests packets communicated between an interconnection ring of a multi-node processor system and at least one memory access controller, the method comprising:

• storing entry states that define current status information for each respective packet;
• storing flow types that define a transaction being performed by the controller for each respective packet;
• storing master identification information that designates an originator of each respective packet;
• and
• storing transaction identification information that identifies each respective packet for its originator;
• wherein said controller uses said entry states, flow types, master identification information, and transaction identification information to communicate packets between said at least one memory controller and said interconnection ring.

A controller for managing a plurality of response packets and a plurality of request packets between interconnection ring of a multi-node processor system and at least one memory access controller, the controller comprising:

• a table structure for storing, for each respective packet, an entry state that defines current status information, a flow type that define a transaction being performed by the controller, master identification information that identifies an originator, transaction identification information defined by a respective originator,
• a request activation queue for storing information until said interconnection ring is accessible;
• and
• a response activation queue for storing response information until the at least one memory access controller is accessible.