Electronics and Telecommunications Research Institute

Woo Jong Hahn

Suk Han Yoon

Sang Man Moh

Jong Seok Han

Jong Seok Hahn

Kyoung Ran Park

Kee Wook Rim

Gil Rok Oh

Kyong Park

An Do Ki

Won Sae Sim

The present invention relates to a node connection apparatus. The 3-link node interconnection apparatus and parallel processing apparatus using the same confirm expanding nodes freely, only using fixed three connecting links, and are suitable to normal packaging method because of easy dividing into 2 (n>1) nodes. The apparatuses comprise the following nodes. The first node has three links connected to other nodes respectively. The second node has three links, one links of them is connected to the first node, and the other two links are in charge of connection of X&plus; direction, X&minus; direction. The third node has three links, one link of them is connected to the first node, and the other two links are in charge of connection of Y&plus; direction, Y&minus; direction. The fourth node has three links, one link of them is connected to the first node, and the other two links are in charge of connection of Z&plus; direction, Z&minus; direction.

Apparatus and method for interconnecting 3-link nodes and parallel processing apparatus using the same

An apparatus for controlling a cache in a computing node, which is located between a node bus and an interconnection network to perform a cache coherence protocol, includes: a node bus interface for interfacing with the node bus; an interconnection network interface for interfacing with the interconnection network; a cache control logic means for controlling the cache to perform the cache coherence protocol; bus-side dual-port transaction buffers coupled between said node bus interface and said cache control logic means for buffering transaction requested and replied from or to local processors contained in the computing node; and network-side dual-port transaction buffers coupled between said interconnection network interface and said cache control logic for buffering transaction requested and replied from or to remote processors contained in another computing node coupled to the interconnection network.

Apparatus for controlling cache by using dual-port transaction buffers

The present invention relates to a routing control apparatus for performing a round robin arbitration and an adaptive routing control. The present invention relates to a routing controller for performing an arbitration and a routing control which are nucleus functions of the crossbar routing switch and, in particular, to a normal routing controller unit for performing a priority based round robin arbitration and an adaptive routing controller unit for performing an adaptive routing control by adding an adaptive routing switch logic to the normal routing controller.

Adaptive routing controller of a crossbar core module used in a crossbar routing switch

The present invention relates to a structure of processor having a plurality of main processors and sub processors, and a method for sharing the sub processors, wherein a method is used for preserving a state of a register file by using a shadow register file when main processor inputs an instruction of the sub processor in case that an exceptional situation happens under processing of an instruction of sub processor and for rolling back thereafter the preserved state in case there is an information of occurrence of the exceptional situation from the sub processor. Also, in order to solve a problem that cache efficiency is reduced due to the use of a first cache which is relatively small and frequently used, there is suggested a first cache bypassing function. Further, in order to solve a problem that its processing speed is reduced when the main processor transfers instructions in sub processor, it is possible to improve the processors' parallelism and its efficiency by providing an extra register file.

Structure of processor having a plurality of main processors and sub

A routing switch for constructing an interconnection network of a parallel processing computer is disclosed. A purpose of the present invention is to provide a crossbar routing switch for a hierarchical interconnection network which has an expandability of a data length and an expandability of a hierarchical structure. The crossbar routing switch for a hierarchical interconnection network in accordance with the present invention comprises a predetermined number of input control units for controlling one input port to perform the manipulation of input data; a crossbar core unit for analyzing a data transmission request by the input control unit and outputting the corresponding data; and a predetermined number of output control unit for controlling one output port and receiving the output data from the crossbar core unit to output it to the output port. The present invention has advantages over the prior art that a data expandability can be provided by simply adding a routing switch without re-designing or re-manufacturing the routing switch several times, and that it can be suitably adapted to an interconnection network of a parallel processing system which requires a high expandability and high performance.

Growing community of inventors

Taejon, South Korea

Woo Jong Hahn