SAL Home PARALLEL Communication Libraries


ROMIO is a high-performance, portable implementation of MPI-IO (the I/O chapter in MPI-2).

ROMIO is optimized for noncontiguous access patterns, which are common in parallel applications. It has an optimized implementation of collective I/O, an important optimization in parallel I/O. ROMIO 1.0.0 includes everything defined in the MPI-2 I/O chapter except file info, shared file pointer functions, split collective data access routines, support for file interoperability, I/O error handling, and I/O error classes.

Current Version:   1.0.3

License Type:   Free

Home Site:

Source Code Availability:


Available Binary Packages:

  • Debian Package: No
  • RedHat RPM Package: No
  • Other Packages: No

Targeted Platforms:

It runs on the following machines: IBM SP, Intel Paragon, HP/Convex Exemplar, SGI Origin 2000, Challenge, and Power Challenge, and networks of workstations (Sun4, Solaris, IBM, DEC, SGI, HP, FreeBSD, and Linux).

Software/Hardware Requirements:


Other Links:

Mailing Lists/USENET News Groups:

Join the romio-users mailing list by sending email to with the message "subscribe romio-users"

User Comments:

  • None

See A Screen Shot? (Not Yet)

  SAL Home   |   Parallel Computing   |   Communication Libraries

Comments? SAL@KachinaTech.COM
Copyright © 1995-2001 by Herng-Jeng Jou
Copyright © 1997-2001 by Kachina Technologies, Inc.
All rights reserved.