Standards Committee


I just got the following message about a meeting held at Langley last
Friday.  This looks to me like it might be a case of premature, misguided,
or overzealous standardization mania, but I'll reserve judgement until I see
the meeting summary.

The reason it might be relevant to the netcdf/HDF project is that it appears
as if they will be starting from LLL's SLIDE/SILO rather than netCDF.  As
far as I know, the "additional extensions" provided by SLIDE/SILO added
support for directory hierarchies in netCDF files, so it would be possible
to group variables and limit the scope of names to directories.  When I
first saw this presented, I concluded that it could all be done with
variable name and attribute conventions without extending the netCDF
interface, but I may be wrong.  I'll pass on the meeting summary when it
arrives and try to find out more about how SLIDE/SILO differs from netCDF.


Industry Standard Data Format (ISDF) for Structured and Unstructured Grids
Meeting at NASA Langley, May 1, 1992

The purpose of this group is to establish a standard data format for
exchanging grid information.  The force behind the standard is the
National Grid Project.  The NGP is funded by 15 U.S. government and industry
organizations.  The purpose of the NGP is to provide a comprehensive set
of grid generation tools integrated under a common user interface.  This
set of tools ranges from CAD, grid generation, solution, and visualization
systems.  In an effort to standardize the flow of information between these
systems, ISDF has been proposed.

The purpose of the Langley meeting was to discuss the following:

  - Integrating HDF from NCSA, with SLIDE/SILO from Lawrence Livermore 
    National Labs.  This will provide a NetCDF type interface with 
    additional extensions.

  - Consider extending HDF functionality to include PDBLib (also from 
    LLNL.)  This will allow storing of "general" data types without
    having to have pre-determined types.

  - See if an ISDF was feasable.

A brief summary of the first meeting will be sent by Jeff Long of LLNL.

My (Adam Gaither's) role in the ISDF (as I see it):

  1.  I will work directly with Bob Weston from NASA Langley to establish 
      a standard data model for grids.

  2.  I will work directly with Keith Hunten from General Dynamics 
      (Chair of Finite Element PDES Sub Committee), and Michael McLay from
      NIST to guide our standard.

  3.  I will organize and disseminating information to the group.

I hope that each of you post what you are willing to do as a part of this

The following is a list of people who are interested in establishing a
standard data exchange format for grids.  If you know of any others
that should be on this list, please e-mail their info to me.

Any mail that needs to be sent to the entire group can be sent to:

Adam Gaither
NSF Engineering Research Center for Computational Field Simulation
Mississippi State University
Software Engineer for the National Grid Project
P.O. Box 6176
Mississippi State, MS 39762
Desk: 601-325-2067
FAX: 601-325-7692
E-mail: adam@xxxxxxxxxxxxxxx

Mike Folk
National Center for Supercomputing Applications
Senior Software Engineer
Software Tools Group
4043 Beckman Institute
Drawer 25
405 North Mathews Avenue
Urbana, IL 61801
Desk: 217-244-0647
E-mail: mfolk@xxxxxxxxxxxxx

Keith Hunten
General Dynamics
Advanced Technology Group
Fort Worth, TX 
Eng Group Specialist Structure & Design
Finite Element - Chairs PDES SubCommit
Office: 817-777-2147 
FAX: 817-777-2115 
E-mail: fwr441@xxxxxxxxxx

Wally Dietrich
IBM, 4-162
Thomas J. Watson Research Center
P.O. Box 218
Yorktown Heights, NY 10598 
Chairman T-CAD subgroup of CFI
Office: 914-945-2073 
FAX: 914-945-4201/3242 
E-mail: wally@xxxxxxx 

Bradford M. Smith
National Institute of Standards and Technology
Gaithersburg, MD 20899
Chairman TC184/SC4
301-975-3558 Office
301-258-9749 FAX
E-Mail: smithb@xxxxxxxxxxxxxxxxxx

Michael McLay
National Institute of Standards and Technology
Bld 220 Rm B344 (mail)
Bld 220 Rm A357 (office) 
Gaithersburg, Maryland 20899
Office: 301-975-4099
FAX: 301-258-9749 
E-Mail: mclay@xxxxxxxxxxxx

Rich Lysakowsky
Analytical Data Interchange and Storage Standards (ADISS) Project
ASTM E49.52 Committee Chairman
Digital Equipment Corporation
Four Results Way, MRO4\2553/C9
Marlboro, MA 01752
E-mail: lysakowski@xxxxxxxxxxxxxxxxxxx

Stewart Brown
Computer Scientist
Lawrence Livermore National Laboratory
P.O. Box 808, L-58
Livermore, CA 94550
Desk: 510-423-4889
E-mail: sabrown@xxxxxxxxxxxxxxxx

Jeffery W. Long
Computer Scientist
Lawrence Livermore National Laboratory
P.O. Box 808, L-58
Livermore, CA 94550
Desk: 510-423-6421
E-mail: jwlong@xxxxxxxxxxxxxxxxx

Robert H. Jackson
Microwave and Millimeter-wave Advanced Computational Environment Program
Naval Research Laboratory
Technical Director, MMACE Program
Vacuum Electronics, Code 6840
4555 Overlook Ave., S.W.
Washington, D.C. 20375-5000
Desk: 202-767-6656 
Office: 202-767-2846
FAX: 202-767-0082 
E-mail: jackson@xxxxxxxxxxxxxxxxxx or jackson@xxxxxxxxxxxxxxxx

Russ Rew                  
University Corporation for Atmospheric Research
Unidata Program Center    
P.O. Box 3000
Boulder, Colorado 80307-3000
E-mail: russ@xxxxxxxxxxxxxxxx

Robert Weston
MS 128
NASA Langley Research Center
Hampton, VA 23665-5225
Office: 804-864-2149
E-mail: weston@xxxxxxxxxxxxxxxxx