SuperCore Scheduler (GSOC 2014)

[Gedare Bloom]

On Mon, Mar 3, 2014 at 2:21 AM, Sebastian Huber
<sebastian.huber at embedded-brains.de> wrote:
> On 2014-03-01 01:13, Andre Marques wrote:
>>
>> Hello,
>>
>> As stated in [1] I will be working with RTEMS for my undergraduate thesis,
>> but
>> I'm also looking to work with RTEMS through GSOC.
>>
>> For the last month I have been working on a test case to check rename()
>> POSIX
>> compliance. For GSOC, however, I would like to work on a SMP-aware
>> scheduler,
>> if possible.
>
>
> Sorry, I still didn't have the time to review it.
>
>
>>
>> What I understood from the SuperCore Scheduler project page is that there
>> is
>> still some work to be done on global edf started last year by Sree harsha
>> konduri. Is it enough or relevant for another GSOC project?
>>
The solution Sree came out with is OK but I think needs to be improved
in the future with fine-grained locks. We did not merge it because I
am not confident it is ready to be used or maintained. Once the
situation with SMP thread life cycle becomes more clear, we can start
to add new schedulers. Until then, however, I am hesitant to encourage
new SMP scheduler implementations to proceed.

-Gedare

>> If not, would it be interesting to implement a new scheduler, for instance
>> pfair or llref?
>
>
> The SMP support is work in progress, so it is hard to predict how things
> will turn out in the next couple of months.  Gedare did a great job with the
> scheduler operations API so that the scheduler is now an application
> configuration option.  One goal is to leverage it to support
> clustered/partitioned scheduling.  I think RTEMS will be a good platform to
> study real-time SMP systems in the future.  Currently a lot of research is
> done on Linux.  RTEMS however is much simpler to understand (e.g. no virtual
> memory, much smaller code base) and may be a good experimental platform.
>
> --
> Sebastian Huber, embedded brains GmbH
>
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> E-Mail  : sebastian.huber at embedded-brains.de
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>
> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
>
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