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