Speaker
Dr
Y. Kodama
(NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (AIST))
Description
It is important that the total bandwidth of the multiple streams should
not exceed the network bandwidth in order to achieve a stable network
flow with high performance in high bandwidth-delay product networks.
Software control of bandwidth for each stream sometimes exceed the
specified bandwidth. We proposed the hardware control technique for
total bandwidth of multiple streams with high accuracy.
GNET-1 is the hardware gigabit network testbed that we developed. It
provides functions such as wide area network emulation, network
instrumentation, and traffic generation at gigabit Ethernet wire
speeds. GNET-1 is a powerful tool for developing network-aware grid
software. It can control the total bandwidth of the multiple streams with
high accuracy by adjusting the interframe gap (IFG).
To see the effect of the highly accurate bandwidth control by GNET-1,
the file exchange of large-scale data was done on a Trans-pacific Grid
Datafarm testbed between Japan-U.S.. We used three trans-pacific
networks, APAN/TransPAC Los Angels line and its Chicago line and
SuperSINET New York line. Its total bandwidth that can be used was 3.9
Gbps. In this feasible study, GNET-1 controlled five gigabit Ethernet
ports, and achieved the total bandwidth of 3.78 Gbps in stable for about
one hour. The bandwidth was 97 % of the peak bandwidth of used networks.
Primary author
Dr
Y. Kodama
(NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (AIST))
