Release Notes for
                    KAP C/OpenMP Version 4.0 for Tru64 UNIX
                                 September 1999






     1  PURPOSE OF RELEASE NOTES


     These  release  notes  provide  information  about  KAP  for  C/OpenMP
     software and user documentstion.  Please read the release notes before
     using the product.

     This version of KAP C has been tested on  Tru64  UNIX  versions  4.0D,
     4.0F and 5.0.

     To  take  advantage  of  the  parallel  decomposition  and   automatic
     generation  of  OpenMP  parallel  directives you need a version of the
     Compaq C compiler  that  can  process  the  OpenMP  directives.   That
     capability  is available in the C compiler distributed with Tru64 UNIX
     5.0 and in the Developers ToolKit for Tru64 UNIX for  4.0D,  4.0E  and
     4.0F.

     To identify the version of KAP C/OpenMP on your system,  look  at  the
     first   part   of  the  software's  output  to  the  terminal.   Three
     consecutive fields contain a version number, base level, and  date  in
     YYMMDD format.  For version 4.0 these fields contain:

          4.0 k010716 990831



     2  CHANGES SINCE KAP FOR C VERSION 3.21

     Version 4.0 of KAP C/OpenMP supports the OpenMP set of directives  for
     parallel  decomposition  of C (and Fortran) programs for SMP or shared
     memory configurations.

     This version of KAP C/OpenMP generates parallel  directives  that  are
     processed by the compiler rather than calls to KAI's parallel runtime
     library.  Hence the runtime library (libkmp.a) is no longer  included
     in the distribution kit.

     As the runtime  library  is  no  longer  part  of  the  kit,  programs
     processed with previous versions of KAP C must be recompiled.

     If KAP C/OpenMP finds any OpenMP directives in the input source  file,
     it  will  not  process  that  file  in  any way.  This is an important
     difference from the KAP Fortran/OpenMP product.  The KAP C/OpenMP User
     Guide  discusses  (in  Section  3.1.1)  the three methods for parallel
     processing;

                                                                Page 2


         -Automatic Detection

         -Directed

         -Combination


     For more information about the OpenMP directives, please refer to  the
     OpenMP web-page at http://www.openmp.org

     The  default  command  line  switch  settings   for   cache-size   and
     set-associativity have changed when tune=ev6 is specified;

          the old values were:  -chs=64,64 -sasc=2
          the new values are:  -chs=32,0 -sasc=1




     3  KNOWN PROBLEMS

     At the time of the release there are no known problems.



     4  TRADEMARK INFORMATION


     Compaq, the Compaq logo, AlphaGeneration, Compaq C, Compaq Fortran
     DECdocument, DECnet, DECsuport, DIGITAL, and VAX DOCUMENT are
     registered in the U>S> Patent and Trademark Office. 
     KAP is a trademark of Kuck & Associates, Inc.
     POSIX is a registered trademark of IEEE.
     UNIX is a registered trademark in the United States and other
     countries licensed exclusively through X/Open Company Ltd.

     All other trademarks and registered trademarks are the property
     of their respective holders.

     Tru64 UNIX Versions 4.0D, 4.0F and 5.0 are X/Open UNIX 93
     branded products.