Re: [9fans] Barrelfish

[David Leimbach <leimy2k@gmail.com>]

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>
>
>
>  Did you find any ideas there particularly engaging?
>>
>
> I'm still digesting it.  My first thoughts were that if my pc is a
> distributed heterogeneous computer, what lessons it can borrow from earlier
> work on distributed heterogeneous computing (ie. plan9).
>
> I found the discussion on cache coherency, message passing and optimization
> to be enlightening.  The fact that you may want to
> organize your core OS quite a bit differently depending on which
> model cpus in the same family you use is kind of scary.
>
> The mention that "... the overhead of cache coherence restricts the ability
> to scale up to even 80 cores" is also eye openeing. If we're at aprox 8
> cores today, thats only 5 yrs away (if we double cores every
> 1.5 yrs).
>


I personally thought the use of DSLs built on Haskell was rather clever, but
the other discoveries are the sort of feedback I suspect our CPU vendors
aren't going to think about on their own somehow :-)


>
>  Roman.
>>
>
> Tim Newsham
> http://www.thenewsh.com/~newsham/
>
>

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