[comp.unix.wizards] TASK-TO-TASK

news@brl-adm.ARPA (The News System <news>) (04/09/87)

   Hello,

   here in the Computer-Center Univ of Stuttgart, W.-Germany, we have a
   CONVEX C1-XP running BSD 4.2 connected to a VAX 11/780 running ULTRIX
   and this Vax is connected to our campus DECnet with about 100 machines.
   We transfer the files from DECnet to the C1 and in the other direction by
   buffering them on the Ultrix-vax.
   One problem is the size of the files, 'cause we have not so much diskspace
   as much we need sometimes.

   Now we want to install a task-to-task connection, because we
   connected the C1 to a CRAY 2 via HYPERCHANNEL.

   Did someone of you solved the problems of a task-to-task connection
   UNIX-ULTRIX-VMS or something like that.

   Thanks    Hartmut Aichele


from : Hartmut Aichele
       Rechenzentrum Universitaet Stuttgart
       Allmandring 30
       7000 Stuttgart 80
       W.-Germany

QUIT

mike@BRL.ARPA (04/10/87)

Hartmut -

One solution to your problem could be to use the "PKG" protocol for
your application.  This is a simple protocol for application-to-
application data exchange.  The nice thing is that it has been
implemented on top of both TCP/IP and DECNET, and the "relay"
function is well defined.  We use it on all manner of UNIX systems,
both System V and Berkeley, including our Cray running UNICOS.
NASA Space Telescope Institute has implemented the VMS and DECNET portions,
and the DECNET-to-TCP/IP relay functions.

I can provide you with the latest UNIX code -- <pmbs@stsci.arpa> can
provide you with the VMS part.

At BRL, we use the PKG protocol to implement network graphics servers,
run command-and-control simulations, manage some experimental
distributed scientific computation, and the like.  It is very simple;
the UNIX implementation is about 10 pages of C code, and very easy
to use.

This is one of the many useful tools distributed with the BRL CAD Package,
but I can make it available directly to anybody who just wants the PKG code.
There is no cost for this code, and no support.

Best,
 -Mike Muuss

(301)-278-6678
  AV  298-6678
  FTS 939-6678

ArpaNet:  <Mike @ BRL.ARPA>

Postal:
  Mike Muuss
  Leader, Advanced Computer Systems Team
  Systems Engineering and Concepts Analysis Division
  U.S. Army Ballistic Research Laboratory
  Attn: SLCBR-SECAD (Muuss)
  APG, MD  21005-5066