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CFD General Notation System
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CGNS site pages
CGNS Home
What is CGNS?
Getting Started
Latest News
Switch to HDF5
Steering Committee
Implementations
Discussion Group
Download
Contributed Utilities
Example CGNS Files
Proposed Extensions
FAQs

Documentation pages
Documentation Home
Papers and Slides
Meeting Minutes
User's Guide
Overview
SIDS
SIDS-to-ADF
Mid-Level Library
ADF Guide

SourceForge pages
SourceForge CGNS Page
CVS Information
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If you have not done so already, please REGISTER by e-mailing to the CGNS REGISTRAR the following information:
  • Your name
  • Company, university, lab, or facility name (if applicable)
  • Email, if different from your current sending address
  • Intended use for CGNS
  • Whether or not you would like to be added to our mailing list giving occasional news and meeting announcements about CGNS.
Although there is no registration requirement in order to obtain CGNS, by registering you will help the CGNS team to serve its users better. (If you "opt in" to receive occasional e-mail announcements, note that you may "opt out" at any time in the future.)

We also strongly recommend that you join the Discussion Group. This forum is the primary method used to keep current and for discussing problems/issues and obtaining help from other CGNS users.

What to Download

As a minimum, you will need to download and compile the CGNS library code. Compilation requires an ANSI compliant C compiler. The current stable release of the CGNS library is Version 2.5, Revision 4.  The source code may downloaded (from SourceForge) as a gzipped, tar file:
This release fixes a long standing issue of memory leakage in the CGNS library when closing a file or deleting a node. It also removes the internal storage of element data when reading and writing, and uses the user supplied buffer instead. In the case of partial reads and writes however, the element data is currently reloaded into memory to do the operations.

Other CGNS related software and older versions of the library are available from the SourceForge CGNS summary page.

  • adf_edit - a simple text based viewer/editor for ADF files.
  • adfh - interface to HDF5
  • cgnslib_x.x - older versions of the library
  • cgnstools - tools for viewing/editing ADF file (Tcl/Tk based).
  • F77_examples - Fortran CGNS examples.
  • UserGuideCode - examples from the CGNS User Guide.

Keeping Current

The most current version of the software may be obtained through anonymous access to the CVS repository (assuming you have cvs installed). If you have already downloaded the software,  then change to the software directory, and enter:  
    cvs update
to update the software to be current with CVS source distribution. You may also directly download the CVS source directly by following the instructions given here. 

If you have questions about CVS, try the CVS home page or documentation on SourceForge.