By Topic

Low-latency message passing on workstation clusters using SCRAMNet

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

9 Author(s)
V. Moorthy ; Dept. of Comput. & Inf. Sci., Ohio State Univ., Columbus, OH, USA ; M. G. Jacunski ; M. Pillai ; P. P. Ware
more authors

Clusters of workstations have emerged as a popular platform for parallel and distributed computing. Commodity high speed networks which are used to connect workstation clusters provide high bandwidth, but also have high latency. SCRAMNet is an extremely low latency replicated non-coherent shared memory, network, so far used only for real-time applications. This paper reports our early experiences with using SCRAMNet for cluster computing. We have implemented a user-level zero-copy message passing protocol for SCRAMNet called the BillBoard Protocol (BBP). The one way latency for sending a 4-byte message between two nodes using the BBP is measured to be as low as 7.8 μs. Since SCRAMNet supports hardware level replication of messages, it is possible to implement multicast with almost the same latency as point-to-point communication. Using the BBP, the latency for broadcasting short messages to 4 nodes is measured to be 10.1 μs and the latency for a 4-node barrier is measured to be 37 μs. We have also built an MPI library on top of the BBP which makes use of multicast support from the BBP. Our results demonstrate the potential of SCRAMNet as a high performance interconnect for building scalable workstation clusters supporting message passing

Published in:

Parallel Processing, 1999. 13th International and 10th Symposium on Parallel and Distributed Processing, 1999. 1999 IPPS/SPDP. Proceedings

Date of Conference:

12-16 Apr 1999