BIB-VERSION:: CS-TR-v2.0 ID:: ncstrl.dartmouthcs//TR95-254 ENTRY:: March 17, 1995 ORGANIZATION:: Dartmouth College, Computer Science TITLE:: Expanding the Potential for Disk-Directed I/O TYPE:: Technical Report (paper) REVISION:: 1 AUTHOR:: Kotz, David DATE:: March 1995 RETRIEVAL:: For a paper copy, email RETRIEVAL:: For a paper copy, write to Technical Report Librarian Department of Computer Science Dartmouth College 6211 Sudikoff Laboratory Hanover, NH 03755-3510 USA RETRIEVAL:: Compressed Postscript at http://www.cs.dartmouth.edu/reports/TR95-254.ps.Z RETRIEVAL:: PDF at http://www.cs.dartmouth.edu/reports/TR95-254.pdf ABSTRACT:: As parallel computers are increasingly used to run scientific applications with large data sets, and as processor speeds continue to increase, it becomes more important to provide fast, effective parallel file systems for data storage and for temporary files. In an earlier work we demonstrated that a technique we call disk-directed I/O has the potential to provide consistent high performance for large, collective, structured I/O requests. In this paper we expand on this potential by demonstrating the ability of a disk-directed I/O system to read irregular subsets of data from a file, and to filter and distribute incoming data according to data-dependent functions. NOTE:: Revised version appeared in SPDP'95. END:: ncstrl.dartmouthcs//TR95-254