Torus networking method and apparatus having a switch for perfor

Details Torus networking method and apparatus having a switch for perfor Torus networking method and apparatus having a switch for perfor

1996-05-02

1998-03-17

Lall, Parshotam S.

395311, G06F 1300

Patent

active

057297568

ABSTRACT:
A reconfigurable torus network system includes a switch section which is composed of switches for splitting an n-dimensional torus network into subunits or combining the subunits into the torus network and I/O switches having a hierarchical structure to couple the subunits to host computers and external devices. Each of these switches may be the same in arrangement as a processor-to-processor connection switch placed at each node (processor element) in the torus network. Since the I/O switches are connected hierarchically, the subunits can be used through host computers connected to the higher I/O switches. An interface with a host computer is provided for each of the subunits. Therefore, a plurality of users are allowed to use one parallel computer simultaneously. In addition, even if the number of available host computers are smaller than the number of the subunits, one host computer can act as a host for the subunits because the I/O switches are connected hierarchically. This allows a user to use the subunits simultaneously. In addition to host computers, each subunit can make access to higher external disk drives or other external devices.

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