NCSA NEWS

NLANR DAST Team Releases New Software

released May 8, 2001

The National Laboratory for Applied Network Research (NLANR) distributed application support team (DAST) has released several software packages this spring. Autobuf version 1.0 (http://dast.nlanr.net/Features/Autobuf_v1.0/), an auto tuning-enabled FTP client and server, was release April 30. The client, a modification of the NcFTP Client, enables Auto Tuning to calculate optimal window sizes before files are transferred. The client is compatible with most other FTP servers. The server, a modification of the WuFtp FTP server, allows connecting clients to reset its buffer size dynamically by using a SITE option.

Iperf 1.2 (http://dast.nlanr.net/Projects/Iperf/) was released in early April to offer new features that include the ability to run the server as a daemon, to run the multicast server as a multithreaded server, and to run the Iperf client in a mode that estimates the optimal window size and also gives the bandwidth possible with various other window sizes. Iperf is a TCP/UDP bandwidth measurement tool that is popular with developer and research communities.

Iperf 1.2 is incorporated in Nettest (http://www-itg.lbl.gov/nettest/), which is a secure, real-time network monitoring framework developed in the Distributed Systems Department at Lawrence Berkeley National Laboratory. The Nettest framework is designed to incorporate both existing and new network tests and to run as either a daemon or an interactive process. Written in C++, Nettest was tested and developed on Linux and Solaris systems.

NLANR is a distributed organization that is funded by the National Science Foundation. The DAST team, based at NCSA, provides support for researchers working with high-performance network applications. NLANR also includes the engineering services (http://ncne.nlanr.net/) team at the Pittsburgh Supercomputing Center and the measurement and network analysis (http://moat.nlanr.net/) team at the San Diego Supercomputer Center.

 

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