Jack<div><br></div><div>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.</div><div><br></div><div>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.<br>
<br><div class="gmail_quote">On Thu, May 19, 2011 at 5:00 AM, Jack <span dir="ltr"><<a href="mailto:jack@rybn.org">jack@rybn.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Thanx Mathieu,<br>
<br>
I will give it a try with your tips.<br>
I have started to install Ubuntu 10.04 on the Mac Pro and i think i will<br>
use this OS.<br>
<br>
In fact, i am crazy because i have installed two ATI Radeon HD 5770 on<br>
this Mac Pro (version 5.1). Each card has 2 Mini Display Ports and 1 DVI<br>
port. On the Apple website it is write each graphic card accept a<br>
resolution of 2560x1600 px. When i plug 2 TV screen (HDMI and each<br>
screen with 1280x768px) on the 2 Mini Display Port on one card (with an<br>
adapter Mini Display Port/HDMI), it works fine. But if i use the second<br>
card with the same configuration (so 4 TV screen on the 4 Mini Display<br>
Port), it seems the computer have not enough power, the Finder quit each<br>
10 second.<br>
I use MacOSX.6.6 and this is not the lastest version (the lastest is<br>
X.6.7 and maybe it is working with this version but now i have no time<br>
to test this config).<br>
<br>
With Ubuntu, the sytem start to load then the 4 screens stay black. I<br>
have to unplug the 2 cables on one graphic card to boot normaly. So i<br>
can only use 2 screens.<br>
<br>
I don't know where is the problem (power ? Apple computers ?).<br>
If someone have any experience on this problem, i will be happy to<br>
listen him.<br>
<br>
Now, the solution that i am going to use :<br>
1 Mac Pro with Ubuntu and one graphic card (ATI Radeon HD 5770)<br>
1 PC with Ubuntu and one graphic card (NVidia GT 440 or NVidia GTX 460)<br>
++<br>
<br>
Jack<br>
<br>
<br>
<br>
<br>
Le mercredi 18 mai 2011 à 11:58 -0400, Mathieu Bouchard a écrit :<br>
<div><div></div><div class="h5">> On Wed, 18 May 2011, <a href="mailto:jack@rybn.org">jack@rybn.org</a> wrote:<br>
><br>
> > I'm going to work on a Mac Pro with MacOsX.6.7 and the latest stable<br>
> > Pd-extended 0.42.5. I would like to connect four PS3 Eye on this<br>
> > computer and use GEM with pix_video to read these four devices in four<br>
> > instance of Pd (=> one camera per instance of pd). I will use Macam<br>
> > driver (or something else ?) Is it easy to get each camera working in<br>
> > the same time on this system ? Do you have experience in this area ?<br>
><br>
> My experience with just one cam on OSX and Pd-extended 42 was that object<br>
> creation order mattered because each [pix_video] object automatically<br>
> opens the first available camera AND the "device 1" method didn't work.<br>
> So, to access only the 2nd camera, I had to create two objects and only<br>
> use the 2nd one.<br>
><br>
> using 4 [pix_video] objects for 4 cameras may work, but they will be<br>
> assigned by creation order.<br>
><br>
> _______________________________________________________________________<br>
> | Mathieu Bouchard ---- tél: <a href="tel:%2B1.514.383.3801" value="+15143833801">+1.514.383.3801</a> ---- Villeray, Montréal, QC<br>
<br>
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