Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!stout.ucar.edu!vanandel
From: vanandel@stout.ucar.edu (Joe Van Andel)
Newsgroups: comp.realtime
Subject: Shared memory with multiple processors running VxWorks
Keywords: VxWorks/multiple processors/ shared memory
Message-ID: <4252@ncar.ucar.edu>
Date: 8 Sep 89 22:44:11 GMT
Sender: news@ncar.ucar.edu
Reply-To: vanandel@ncar.ucar.edu (Joe Van Andel)
Organization: Field Observing Facility, NCAR, Boulder, CO
Lines: 16

I am working on a real-time radar signal processing system that will
use multiple 68020 processors running VxWorks on a VME backplane.
Because of the large amount of data we are processing
(400Kbytes/second), I can't afford to use TCP/IP or RPC interprocess
communication methods.  As I read the manual, I conclude that VxWorks
doesn't provide facilities for managing shared memory or semaphores
between tasks executing on different processors.  I very much like
VxWorks, but I feel it needs more multi-processor support.

Has anyone else written code (that you would be willing to share) to provide
these facilities?  Do other real-time operating system vendors offer
better multi-processor support?
	Joe VanAndel  		Internet:vanandel@ncar.ucar.edu
	NCAR - RSG  			
	P.O Box 3000		Fax:	 303-497-2044
	Boulder, CO 80307-3000	Voice:	 303-497-2071