Advancing state of the art high-performance computing, communications and data analytics.
The Advanced Networking Group at PSC conducts research on network performance and analysis in support of high-performance computing applications. This group also develops software to support heterogeneous distributed supercomputing applications and to implement high-speed interfaces to archival and mass storage systems.
Work done by this group includes TCP implementations, TCP tuning, and software to monitor and improve network performance.
3ROX – The Three Rivers Optical Exchange (3ROX) is a regional network aggregation point, also called a GigaPoP, providing high speed commodity and research network access to sites in western and central Pennsylvania and West Virginia.
HPN-SSH – HPN-SSH is a series of modifications to OpenSSH, the predominant implementation of the ssh protocol. It was originally developed to address performance issues when using ssh on high speed long distance networks (also known as Long Fat Networks: LFNs). By taking advantage of automatically optimized receive buffers HPN-SSH could improve performance dramatically on these paths. Later advances include; disabling encryption after authentication to transport non-sensitive bulk data, modifying the AES-CTR cipher to use multiple CPU cores, more detailed connection logging, and peak throughput values in the scp progress bar.
Web10G – Web10G promises innovations in performance, stability, optimization, and network diagnostics to anyone who wants to fully exploit modern high bandwidth connections. It provides users with have real-time statistics about their network connections, and allows them to fine-tune some characteristics of the connection to improve performance. Join the Web10G team on our mailing list, view the archives or visit Web10G online.
KINBER and PennREN – The Keystone Initiative for Network Based Education and Research (KINBER) serves as coordinator for the construction and management of a Pennsylvania-wide fiber optic network, PennREN (Pennsylvania Research and Education Network). PennREN will be accessible to educational, research, health care, and economic development partners seeking to aggregate services for their members and subscribers at affordable cost.
Networking Tools, Software, and Information
TestRig 2.0 – A bootable Linux ISO used to automatically and conveniently generate network performance data for analysis by PSC engineers.
High Performance Enabled SSH/SCP – HPN-SSH – Maximize the performance of secure copying and connections between hosts on a high-performance network.
Poll-Switch – SNMP poll a layer-2 device – Retrieving host and port information from a layer-2 switch running an SNMP agent.
Mac-Scan – Scan hosts on a VLAN or network for vulnerabilities
IP-Utils – Enable data communication via a simple API for various IP-based networking protocols
- Presentation by Jamshid Mahdavi at the High Performance Data Networking conference at Northwestern University, 4/97
- Presentation by Jeffrey Semke at the vBNS Techs workshop at Carnegie Mellon University, 5/98
Networking Research Papers
DANCES – The DANCES project (Developing Applications with Networking Capabilities via End-to-End SDN) is developing tools to allow the scheduling of network resources much as compute resources are scheduled now, with the aim of reducing data transfer bottlenecks, a serious hindrance to scientific research.
NPAD/pathdiag – Automatic diagnostic server for troubleshooting end-systems and last-mile network problems.
SAMI (NIMI) – Creating a Secure and Accountable Measurement Infrastructure
Web 100 – Created to address automatic TCP buffer tuning.