[PD] four PS3 Eye on Mac Pro and Pd-ext and GEM

[jack at rybn.org]

Hello Chris,

If I have time to do this test the next time i will do it (putting the
graphic card on the 4x PCIe bus).
Now, it works fine with 2 MacPro (with one graphic card and 2 PS3 Eye on
each MacPro) and Ubuntu 10.04.
I have installed PureData 0.42.5, last GEM from SVN and ATI driver
Catalyst for the Radeon HD 5770 and the acceleration is OK.
When i was using 'dialog' message, i can't remember what i got.
Thanx for your help and suggestion. I will try to test all your
recommandations the next time.
One remark : it seems the graphic acceleration is better under Ubuntu than
MacOSX. Is there a problem with the driver under MacOSX ? (The same patch
worked faster under Ubuntu).
++

Jack



> Jack
>
> I think two of those cards might draw too much power to run at the same
> time?  Also, check the PCIe lane speeds and try running them at 4x or 8x
> rather than 16x.
>
> AS far as getting 4 of the same cam running, it depends on how the driver
> presents multiple cams to Quicktime.  It might show up as one device with
> four inputs, for example.  Use the 'dialog' message to check it out.
>
> On Thu, May 19, 2011 at 5:00 AM, Jack <jack at rybn.org> wrote:
>
>> Thanx Mathieu,
>>
>> I will give it a try with your tips.
>> I have started to install Ubuntu 10.04 on the Mac Pro and i think i will
>> use this OS.
>>
>> In fact, i am crazy because i have installed two ATI Radeon HD 5770 on
>> this Mac Pro (version 5.1). Each card has 2 Mini Display Ports and 1 DVI
>> port. On the Apple website it is write each graphic card accept a
>> resolution of 2560x1600 px. When i plug 2 TV screen (HDMI and each
>> screen with 1280x768px) on the 2 Mini Display Port on one card (with an
>> adapter Mini Display Port/HDMI), it works fine. But if i use the second
>> card with the same configuration (so 4 TV screen on the 4 Mini Display
>> Port), it seems the computer have not enough power, the Finder quit each
>> 10 second.
>> I use MacOSX.6.6 and this is not the lastest version (the lastest is
>> X.6.7 and maybe it is working with this version but now i have no time
>> to test this config).
>>
>> With Ubuntu, the sytem start to load then the 4 screens stay black. I
>> have to unplug the 2 cables on one graphic card to boot normaly. So i
>> can only use 2 screens.
>>
>> I don't know where is the problem (power ? Apple computers ?).
>> If someone have any experience on this problem, i will be happy to
>> listen him.
>>
>> Now, the solution that i am going to use :
>> 1 Mac Pro with Ubuntu and one graphic card (ATI Radeon HD 5770)
>> 1 PC with Ubuntu and one graphic card (NVidia GT 440 or NVidia GTX 460)
>> ++
>>
>> Jack
>>
>>
>>
>>
>> Le mercredi 18 mai 2011 à 11:58 -0400, Mathieu Bouchard a écrit :
>> > On Wed, 18 May 2011, jack at rybn.org wrote:
>> >
>> > > I'm going to work on a Mac Pro with MacOsX.6.7 and the latest stable
>> > > Pd-extended 0.42.5. I would like to connect four PS3 Eye on this
>> > > computer and use GEM with pix_video to read these four devices in
>> four
>> > > instance of Pd (=> one camera per instance of pd). I will use Macam
>> > > driver (or something else ?) Is it easy to get each camera working
>> in
>> > > the same time on this system ? Do you have experience in this area ?
>> >
>> > My experience with just one cam on OSX and Pd-extended 42 was that
>> object
>> > creation order mattered because each [pix_video] object automatically
>> > opens the first available camera AND the "device 1" method didn't
>> work.
>> > So, to access only the 2nd camera, I had to create two objects and
>> only
>> > use the 2nd one.
>> >
>> > using 4 [pix_video] objects for 4 cameras may work, but they will be
>> > assigned by creation order.
>> >
>> >   _______________________________________________________________________
>> > | Mathieu Bouchard ---- tél: +1.514.383.3801 ---- Villeray, Montréal,
>> QC
>>
>>
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>