Last Modified
May 4, 2001 |
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Introduction
Affiliations |
Projects
Portals 3.0 is a lightweight, scalable message passing layer that has been designed to support OS and application bypass. The Portals API is a joint development project between the Scalable Systems Laboratory at UNM and the Scalable Computing Systems Department at Sandia National Laboratories. Roadrunner is a Linux based SuperCluster housed at the Albuquerque High Performance Computing Center at UNM. Application bypass, the ability to perform remote message passing operations without any intervention by the application, is an important aspect of the Portals 3.0 API. However, support for application bypass is currently limited to the point-to-point operations of MPI. In this project we are investigating more extensive uses of application bypass. This project looks to extend traditional performance monitoring tools so that they can be used in environments with thousands of processing nodes. Our focus areas also include: how to collect useful and reduced data, how to reduce system overheads, how to effectively manipulate and present data, and how to produce a flexible and portable tools. The goal of this project is to apply the principles of scalable system design to the problem of deploying arrays of sensors. In particular, the goal is to investigate techniques for developing highly trustworthy, remote, unattended, redundant sensor array. This project reconsiders the role of fragmentation in IP and, after evaluating the consequences, proposes to use IP fragmentation and reassembly on Alteon Acenic gigabit NICs to reduce interrupt handling time on the receiver and speed overall throughput on gig-e networks. This is a set of studies involving Myricom's GM message-passing system. It includes a set of performance measurements on Myrinet, a GM's performance degradation analysis and GM as a tool for benchmarking communication in real parallel applications. SSL is moving towards dual processor workstations to enhance research efforts. This is a general project category for collecting documentation on various performance measuring tools. |