| 摘要 |
To exchange data between adjacent nodes at high speed while using an existing network including a fat tree and a multistage crossbar switch. This invention provides a parallel computer system including: a plurality of nodes each of which includes a processor and a communication unit; a switch for connecting the plurality of nodes with each other; a first network for connecting each of the plurality of nodes and the switch; and a second network for partially connecting the plurality of nodes with each other. Further, the first network is comprised of one of a fat tree and a multistage crossbar network. Further, the second network partially connects predetermined nodes among the plurality of nodes directly with each other.
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