User Commands                                           optisa(1)



NAME
     optisa - determine which variant instruction set is  optimal
     to use

SYNOPSIS
     optisa instructionset...


DESCRIPTION
     optisa prints which  instructionset out of the ones  speci-
     fied  in the command will perform best on  this machine.  In
     this case, ``best''  is  defined  by  the  order   in  which
     instruction  set names are returned by  isalist(1). Possible
     values for instructionset are given in  isalist(5).

ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Availability                 SUNWcsu                     
    


EXIT STATUS
     The following exit values are returned:

     0    One of the  instructionset  values  you  specified  is
          printed by this command.


     1    There is no output; that is, this  machine  cannot  use
          any  instructionset that you specified with the optisa
          command.


SEE ALSO
     isalist(1), uname(1), attributes(5), isalist(5)

NOTES
     optisa  is  preferable  to   uname  -p  or   uname  -m  (see
     uname(1)) in determining which of several binary versions of
     a given program  should be used on the given machine.








SunOS 5.11          Last change: 25 Jul 1997                    1