Thanks for the reply Nick. I was under the impression it would be possible with eCos, given other RTOSs (like RTEMS) support heterogeneous multiprocessor systems.
Also, I thought the HAL was there to provide the necessary abstraction between the hardware and the OS. So having heterogeneous cpus could be taken care of by including several compilations of the HAL for each arch, with appropriate "glue". Am I missing something? Thanks, Ahmed --- Nick Garnett <[EMAIL PROTECTED]> wrote: > Ahmed Abdelkhalek <[EMAIL PROTECTED]> writes: > > > It may make sense especially on a heterogeneous MP > > platform, where you might want to bind certain > threads > > that do expensive work on more capable processors, > and > > other less demanding threads to cheaper cores. > > eCos SMP support is fairly simple, it assumes equal > CPUs and uniform > memory access. It certainly cannot cope with CPUs of > varying > performance and capabilities. There is no way it > could cope with > heterogeneous CPUs. Neither could it cope with NUMA > systems. > > If you want to run a single OS image on a strongly > asymmetric system > then eCos is probably not the place to start. The > additional > complexity needed, while acceptable in a large OS > like Linux, is > excessive for a small OS like eCos. > > -- > Nick Garnett > eCos Kernel Architect > http://www.ecoscentric.com The > eCos and RedBoot experts > Besuchen Sie uns vom 13.-15.02.07 auf der Embedded > World 2007, Stand 11-336 > Visit us at Embedded World 2007, Nürnberg, Germany, > 13-15 Feb, Stand 11-336 > > ____________________________________________________________________________________ 8:00? 8:25? 8:40? Find a flick in no time with the Yahoo! Search movie showtime shortcut. http://tools.search.yahoo.com/shortcuts/#news -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
