@InProceedings{carretero:compassion2, author = {J. Carretero and Jaechun No and A. Choudhary and Pang Chen}, title = {{COMPASSION}: a parallel {I/O} runtime system including chunking and compression for irregular applications}, booktitle = {Proceedings of the Fifth International Symposium on Solving Irregularly Structured Problems in Parallel (IRREGULAR'98)}, year = {1998}, month = {August}, pages = {262--273}, earlier = {carretero:compassion}, keywords = {PASSION, parallel I/O, compression, collective I/O, pario-bib}, abstract = {In this paper we present an experimental evaluation of COMPASSION, a runtime system for irregular applications based on collective I/O techniques. It provides a "Collective I/O" model, enhanced with "Pipelined" operations and compression. All processors participate in the I/O simultaneously, alone or grouped, making scheduling of I/O requests simpler and providing support for contention management. In-memory compression mechanisms reduce the total execution time by diminishing the amount of I/O requested and the I/O contention. Our experiments, executed on an Intel Paragon and on the ASCI/Red teraflops machine, demonstrate that COMPASSION can obtain significantly high-performance for I/O above what has been possible so far.} }