CASE FOR TCP VEGAS IN HIGH-PERFORMANCE COMPUTATIONAL GRIDS

Conference · Mon Jan 01 00:00:00 EST 2001

DOI:https://doi.org/10.1109/HPDC.2001.945186· OSTI ID:975581

Weigle, E H ^[1]; Feng, W C ^[2]

---

1. Eric H.
2. Wu-Chun

Computational grids such as the Information Power Grid, Particle Physics Data Grid, and Earth System Grid depend on TCP to provide reliable communication between nodes across a wide-area network (WAN). Of the available TCP implementations, TCP Reno and its variants are the most widely deployed; however, Reno's performance in computational grids is mediocre at best. Due to conflicting results in the evaluation of TCP implementations we present a detailed simulation study that unifies the conflicting results and demonstrates the limitations of earlier work. We focus on the two most debated versions of TCP - Reno and Vegas. Using real trafJic distributions, we show that Vegas performs well over modern high-performance links and better than Reno with the proper selection of the Vegas parameters a and p. Our results exhibit ways to signijicantly enhance the performance of distributed computational grids that rely on TCP.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• OSTI ID: 975581
• Report Number(s): LA-UR-01-3420; TRN: US201018%%769
• Resource Relation: Conference: "Submitted to: IEEE International Symposium on High-Performance Distributed Computing."
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICAL METHODS AND COMPUTING
COMMUNICATIONS
EVALUATION
PERFORMANCE
PHYSICS
SIMULATION
COMPUTER NETWORKS
LOCAL AREA NETWORKS