Disk-Directed I/O for an Out-of-Core Computation

12 years 1 months ago
Disk-Directed I/O for an Out-of-Core Computation
New file systems are critical to obtain good I/O performance on large multiprocessors. Several researchers have suggested the use of collective file-system operations, in which all processes in an application cooperate in each I/O request. Others have suggested that the traditional lowlevel interface (read, write, seek) be augmented with various higher-level requests (e.g., read matrix). Collective, high-level requests permit a technique called diskdirected I/O to significantly improve performance over traditional file systems and interfaces, at least on simple I/O benchmarks. In this paper, we present the results of experiments with an “out-of-core” LU-decomposition program. Although its collective interface was awkward in some places, and forced additional synchronization, diskdirected I/O was able to obtain much better overall performance than the traditional system.
David Kotz
Added 26 Aug 2010
Updated 26 Aug 2010
Type Conference
Year 1995
Where HPDC
Authors David Kotz
Comments (0)