From sxu@ncsa.uiuc.edu Mon Dec 19 15:09:44 1994
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From: sxu@xongmao (Shiming Xu)
Date: Mon, 19 Dec 1994 15:11:09 -0600
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To: hdfnews
Subject: HDF3.3r4 BULLETIN_12/19/94
Status: OR

Dec. 19, 1994

HDF3.3r4 patch02
----------------

HDF3.3r4 patch02 changed Vset routines to pre-read the headers of 
the Vdatas and Vgroups.  This fixes a problem that causes Vattach 
to fail when accessing a vdata whose data part was not available, 
such as missing external Vdata files. 

With this change Vstart() will spend a little bit more time 
reading the headers, depending on how many Vdatas and Vgroups
exist in the files. Meanwhile the change speeds up read 
and write access to Vdatas and Vgroups after the file is opened. 

HDF3.3r4 patch02 patch files are available on the NCSA ftp server in
subdirectory:

        /HDF/HDF3.3r4/patches/.

The patched source files are in:

        /HDF/HDF3.3r4/patches/patchedsrc/.

The executables in /HDF/HDF3.3r4/hqx/ (for Mac/MacOS) and in
/HDF/HDF3.3r4/zip/ (for MSDOS and WINDOWS).

HDF patch02 was tested on the following platforms:

Platform                'base library'              HDF/netCDF
-------                 --------------              ----------

Sun4/SunOs4.1.3               X                         X
Sun4/Solaris                                             
IBM/RS6000*                   X                         X
SGI/IRIX4.0.2                                           
SGI/IRIX5.2                   X                         X
Convex/ConvexOS               X                         X
Cray Y-MP/UNICOS              X                         X
Cray C90                                               
CM5                           X                         X
NeXT/NeXTSTEP                                           
HP/UX 9.01                    X                         X
DecStation/MIPSEL+            X                         X
VMS/VMS                       X                         X
Mac/MacOS                   
IBM PC - MSDOS                X                         -
IBM PC - Windows 3.1          X                         -
IBM PC - 386 Compiler                                   -
    (Watcom)
DEC Alpha/OSF                 X                         X

Fujitsu VP/UXPM                                         -
Intel i860                                              -

* - FORTRAN interfaces were not tested.
+ - with Ultrix 4.2 or greater versions of the operating system

Known bugs
----------

DFSDgetdims does not return right value for the unlimited dimension 
of multi-dimensional SDS's created using SD routines.

Ncsnc() doesn't work right when there is an unlimited dimension.


Contact
-------
 
Please contact hdfhelp@ncsa.uiuc.edu for questions, suggestions and
comments.