Virtual-Channel Flow Control of Wormhole Routing.

Accession number;99A0182297
Title;Virtual-Channel Flow Control of Wormhole Routing.
Author; MIURA YASUYUKI (Japan Advanced Inst. Sci. and Technol., Hokuriku) ABE TOORU (Japan Advanced Inst. Sci. and Technol., Hokuriku) HORIGUCHI SUSUMU (Japan Advanced Inst. Sci. and Technol., Hokuriku)
Journal Title;Joho Shori Gakkai Kenkyu Hokoku
Journal Code:Z0031B
ISSN:0919-6072
VOL.98;NO.115(HPC-74);PAGE.59-64(1998)
Figure&Table&Reference;FIG.10, REF.4
Pub. Country;Japan
Language;Japanese
Abstract;To reduce communication latency, virtual channel is introduced into parallel computers, and Round-Robin is adapted as a virtual channel flow control. However, Round-Robin policy increases large delay for a wormhole routing on parallel computers. We propose new policies of virtual channel flow control based on priority to improve communication performance of wormhole routing. This paper addresses new control policies; preempt and improved preempt for the priority-based flow control. Simulation results show that the preempt policy can increase throughput, and reduce communication latency. (author abst.)