@InCollection{baylor:vulcan-perf-book, author = {Sandra Johnson Baylor and Caroline Benveniste and Yarsun Hsu}, title = {Performance Evaluation of a Massively Parallel {I/O} Subsystem}, booktitle = {Input/Output in Parallel and Distributed Computer Systems}, chapter = {13}, editor = {Ravi Jain and John Werth and James C. Browne}, crossref = {iopads-book}, year = {1996}, series = {The Kluwer International Series in Engineering and Computer Science}, volume = {362}, pages = {293--311}, publisher = {Kluwer Academic Publishers}, earlier = {baylor:vulcan-perf}, keywords = {parallel I/O architecture, performance evaluation, pario-bib}, abstract = {Presented are the trace-driven simulation results of a study conducted to evaluate the performance of the internal parallel I/O subsystem of the Vulcan massively parallel processor (MPP) architecture. The system sizes evaluated vary from 16 to 512 nodes. The results show that a compute node to I/O node ratio of four is the most cost effective for all system sizes, suggesting high scalability. Also, processor-to-processor communication effects are negligible for small message sizes and the greater the fraction of I/O reads, the better the I/O performance. Worse case I/O node placement is within 13\% of more efficient placement strategies. Introducing parallelism into the internal I/O subsystem improves I/O performance significantly.}, comment = {Part of a whole book on parallel I/O; see iopads-book.} }