Re: realtime networking

[john.l.ahrens@boeing.com]

On 14-Sep-98 Richard Teltz wrote:
>>On Thu, 3 Sep 1998, Mack wrote:
>
>> Hi.
>> 
>> I consider doing some work on realtime networking protocol over ether
net.
>> (under linux of course)
>> 
>> 1. Has anyone already done something similar ?  I couldn't find anyth
ing,
>>    but I want to be sure before I start working.
>> 2. Any interesting ideas/suggestions for the implementation ?
>
>You should have a look at the NDDS product from Real Time Innovations
>(www.rti.com).  It is a real time data delivery system based on UDP/IP.
>It is an add-on product for the VxWorks RTOS.  

Just to note that this product supports most flavors of Unix (including 
Linux) and
Win95/98/NT as well as VxWorks. The web page says that I think, but just
 in case 
you might decide not to go there.

>It has been a while
>since I looked at this but I recall the website being a good source.
>There are also a few white papers regarding this work that are good
>(it was originally started at Stanford for distributed robot control
>and has been a commercial product for approx 3-5 years I think).   
>
>> Any interesting thoughts about this ?
>> Will such project be useful for more people, if I do it ?
>> 
>> 	Yoav
>
>I would be very interested in this work.  We have developed an
>"Open Architecture" machine controller that is based on an IP
>client / server design.  I am currently porting it to RTLinux
>and am trying to find a way around having to pass all messages
>through the LINUX 'process' (usually the lowest priority process 
>under the RTLinux kernel).  
>
>best regards
>
>Richard Teltz
>principal research engineer
>Intelligent Machines and Manufacturing Research Centre (IMMRC)
>McMaster University 
>
>RT Linux Home Page: http://rtlinux.cs.nmt.edu/~rtlinux

--
John Ahrens, Test Systems R & D
john.l.ahrens@boeing.com
http://misfit.ca.boeing.com/~john/
I don't speak for my employer.
RT Linux Home Page: http://rtlinux.cs.nmt.edu/~rtlinux