paul@dy4.uucp (Paul Burry) (02/03/90)
I am interested in experimenting with Mach in a multiprocessor system consisting of a number of VMEbus single board computers. Because my specific interest concerns the use of Mach in real-time embedded applications, I am trying to determine whether CMU (or anyone else) distributes a low-cost Mach kernel without the Unix layers. Is such a distribution available? How much does it cost? Where can I obtain it? I have also seen references to a real-time variant of Mach but I have not seen any substantial information. Does anyone have any information they could send me? One final request, could someone tell me where I can obtain current detailed documentation on Mach? Any assistance would be appreciated. Paul Burry -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Paul Burry PHONE: (613)-596-9911 UUCP: ...!cognos!dy4!paul POST: Dy4 Systems Inc., 21 Fitzgerald Road, or ...!cognos!dy4!seu13!paul Nepean, Ontario, Canada K2H 9J4
walden@zip.eecs.umich.edu (Eugene Marvin Walden ) (02/15/90)
In article <155@dy4.UUCP> paul@dy4.UUCP (Paul Burry) writes: > >I am interested in experimenting with Mach in a multiprocessor system >consisting of a number of VMEbus single board computers. Because my >specific interest concerns the use of Mach in real-time embedded >applications, I am trying to determine whether CMU (or anyone else) >distributes a low-cost Mach kernel without the Unix layers. Is such >a distribution available? How much does it cost? Where can I obtain it? > >I have also seen references to a real-time variant of Mach but I >have not seen any substantial information. Does anyone have any >information they could send me? > >One final request, could someone tell me where I can obtain current >detailed documentation on Mach? > > >Any assistance would be appreciated. > >Paul Burry >-- >=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- >Paul Burry PHONE: (613)-596-9911 >UUCP: ...!cognos!dy4!paul POST: Dy4 Systems Inc., 21 Fitzgerald Road, >or ...!cognos!dy4!seu13!paul Nepean, Ontario, Canada K2H 9J4 I am not sure about the first part of your question, but I think I can give you a lead on the real-time question. The paper by Tokuda et al in the IEEE Real-Time Systems Symposium 1987, "Implementation of a Time-Driven Scheduler for Real-Time Operating Systems" describes modifications made to the MACH kernel to allow real-time task scheduling. Since then, I think they have done more work. If you look in the issue of _Special Interest Group on Operating Systems_ that focuses on real-time operating systems (sometime in 1988) I think there is a followup article on their research. Alternatively, you could try to get in touch with - Hideyuki Tokuda - James Wendorf - Huay-Yong Wang at Carnegie-Mellon University: Computer Science Department Carnegie-Mellon University Pittsburgh, Pennsylvania, 15213 Good luck!