From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.geekisp.com ([216.168.135.169] helo=starfish.geekisp.com) by linuxtogo.org with esmtp (Exim 4.69) (envelope-from ) id 1NVPw6-0005Md-K0 for openembedded-devel@lists.openembedded.org; Thu, 14 Jan 2010 14:40:33 +0100 Received: (qmail 11562 invoked by uid 1003); 14 Jan 2010 13:38:17 -0000 Received: from localhost (HELO ?192.168.1.167?) (philip@opensdr.com@127.0.0.1) by mail.geekisp.com with SMTP; 14 Jan 2010 13:38:17 -0000 Message-ID: <4B4F1E48.5030008@balister.org> Date: Thu, 14 Jan 2010 08:38:16 -0500 From: Philip Balister User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091209 Fedora/3.0-3.fc11 Thunderbird/3.0 MIME-Version: 1.0 To: openembedded-devel@lists.openembedded.org References: <353547.18069.qm@web112505.mail.gq1.yahoo.com> In-Reply-To: <353547.18069.qm@web112505.mail.gq1.yahoo.com> X-SA-Exim-Connect-IP: 216.168.135.169 X-SA-Exim-Mail-From: philip@balister.org X-SA-Exim-Version: 4.2.1 (built Wed, 25 Jun 2008 17:20:07 +0000) X-SA-Exim-Scanned: No (on linuxtogo.org); Unknown failure Subject: =?UTF-8?B?UmU6IERvZXMgT0XigJlzIEFuZ3N0cm9tIExpbnV4IHN1cHBvcnQgU01QIChTeW1tZXRyaWMgbXVsdGlwcm9jZXNzaW5nKSBvbiBiZWFnbGUgYm9hcmQu?= X-BeenThere: openembedded-devel@lists.openembedded.org X-Mailman-Version: 2.1.11 Precedence: list Reply-To: openembedded-devel@lists.openembedded.org List-Id: Using the OpenEmbedded metadata to build Distributions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Jan 2010 13:40:34 -0000 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 01/13/2010 10:06 AM, gagan singh wrote: > Hi Phil, > Thanks for the response. So you recon Asynchronous Multi-Processing (AMP) concept is better suited in beagle board configuration. If so what exactly I have to do in angstom to get such thing working. > > regards Read up on dsplink, codec engine and dsp bridge. These are all packages for using the DSP from linux running on the ARM. Philip > > Gagan > > > --- On Tue, 1/12/10, Phil Blundell wrote: > > > From: Phil Blundell > 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, 11:44 AM > > > 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 wrote: >> >> >> From: Phil Blundell >> 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. >> >> >> >> _______________________________________________ >> Openembedded-devel mailing list >> Openembedded-devel@lists.openembedded.org >> http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel >> >> >> >> >> _______________________________________________ >> Openembedded-devel mailing list >> Openembedded-devel@lists.openembedded.org >> http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel > > > > _______________________________________________ > Openembedded-devel mailing list > Openembedded-devel@lists.openembedded.org > http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel > > > > > _______________________________________________ > Openembedded-devel mailing list > Openembedded-devel@lists.openembedded.org > http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel