The Practical Fat Tree Network (PFN) is proposed as an efficient interconnection structure for parallel processing computers and high speed switching nodes of telecommunication networks using a butterfly network. It satisfies the concept of volume uni...
The Practical Fat Tree Network (PFN) is proposed as an efficient interconnection structure for parallel processing computers and high speed switching nodes of telecommunication networks using a butterfly network. It satisfies the concept of volume universality from Leiserson' s theoretical fat tree network [1]. In the fat tree network, locality of input traffic is a very important factor because it has significant effects on performance. The proposed performance model effectively describes this locality factor. Performance is analyzed according to varing input traffic loads, buffer sizes, and level. The accuracy of the model is confirmed by comparing its results with those from simulation. The proposed model is found to be very accurate. Although the PFN is a dynamic connection network, it shows low delay and high throughput for the applications that have locality. This paper also evaluates the reliability measures such as terminal reliability and network reliability of PFN, showing that it has higher reliability than Multistage Interconnection Networks (MINs).