From: Phil Blundell <philb@gnu.org>
To: openembedded-devel@lists.openembedded.org
Subject: Re: Does OE’s Angstrom Linux support SMP (Symmetric multiprocessing) on beagle board.
Date: Tue, 12 Jan 2010 16:44:48 +0000 [thread overview]
Message-ID: <1263314688.3675.435.camel@mill.internal.reciva.com> (raw)
In-Reply-To: <338689.59324.qm@web112510.mail.gq1.yahoo.com>
I would have thought the interconnect performance would be the least of
your worries. It seems that a rather bigger obstacle to running any
kind of SMP on this hardware would be the issue that the two cores have
different instruction sets: the DSP can't execute ARM code, and the ARM
can't execute DSP code.
p.
On Tue, 2010-01-12 at 07:51 -0800, gagan singh wrote:
> Hi Phil,
>
> I thought general response time of any general application time will be faster.
> Say Just getting a feeling of running General purpose Computer OS/applications on a 1 GHz processor while actually it is running on 500MHz CPU with SMP support(Keeping overhead time aside)
> DSP seems to remain idle most of the time while everything runs on Arm core. You says difficult to implement on that sort Of Cores. Do the inter communication link/memory interface is bottle neck for implementing shared workload.
>
> regards
>
> Gagan
>
>
> --- On Tue, 1/12/10, Phil Blundell <philb@gnu.org> wrote:
>
>
> From: Phil Blundell <philb@gnu.org>
> Subject: Re: [oe] Does OE’s Angstrom Linux support SMP (Symmetric multiprocessing) on beagle board.
> To: openembedded-devel@lists.openembedded.org
> Date: Tuesday, January 12, 2010, 10:06 AM
>
>
> On Tue, 2010-01-12 at 06:57 -0800, gagan singh wrote:
> > Do the Angstrom version of Linux supports SMP for Dual core (A8 + TI DSP 320C64x) beagle board. If not, where I should look in tutorial to work on adding support for such a feature.
> > I try Google it but no much could be located.
>
> I'm not quite sure what you are trying to do here. It's hard to imagine
> how you could have any meaningful kind of "symmetric" multiprocessing on
> that combination of cores.
>
> What exactly are you hoping to achieve?
>
> p.
>
>
>
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next prev parent reply other threads:[~2010-01-12 16:47 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1263308775.3675.420.camel@mill.internal.reciva.com>
2010-01-12 15:51 ` Does OE’s Angstrom Linux support SMP (Symmetric multiprocessing) on beagle board gagan singh
2010-01-12 16:44 ` Phil Blundell [this message]
2010-01-13 15:06 ` gagan singh
2010-01-13 20:02 ` Phil Blundell
2010-01-14 13:38 ` Philip Balister
2010-01-12 14:57 gagan singh
2010-01-12 15:17 ` Koen Kooi
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