OS support for fault tolerance
Eitan Adler
lists at eitanadler.com
Tue Feb 14 18:05:42 UTC 2012
On Tue, Feb 14, 2012 at 12:05 PM, Jason Hellenthal <jhell at dataix.net> wrote:
> How about core redundancy ? effectively this would reduce the amount of
> available cores in half in you spread a process to run on two cores at
> the same time but with an option to adjust this per process etc... I
> don't see it as unfeasable.
There are a number of papers discussing core redundancy. They pretty
much all work the same way: process the work on two different cores
(or verify some subset of the work on the second core), and wait for
both cores to return prior to the commit phase.
One example: www.eecs.umich.edu/~taustin/papers/MICRO32-diva.pdf
Another example: www.ee.duke.edu/~sorin/papers/ieeemicro08_argus.pdf
These don't use existing cores on a multi-core chip, but instead use a
"functional correctness" chip but I've seen designs that use the
former as well.
--
Eitan Adler
More information about the freebsd-hackers
mailing list