[AG-TECH] Best single machine node hardware ? ? ? ?
bdr at internet2.edu
Fri Sep 10 21:10:43 CDT 2004
We run our room based system on a Dell workstation machine with dual 2.4
ghz processors, 1 gb RAM, a Matrox Parhelia AGP video card that supports
3 monitors/projectors and using the integrated sound chip running WinXP.
Osland, CD (Chris) wrote:
>>Behalf Of Deb Agarwal
>>I have heard several of you mention that you are running a single
>>machine AG node.
>>I am planning to upgrade the hardware for my node and want to
>>my room based on a single machine. Does anyone have specs suitable
>>for a single machine node running Windows XP or RedHat 9.0
>>that can transmit
>>at least 2 videos, operate 1 audio, drive 4 displays, and
>>keep up with
>>the video streaming
>>in to a well attended meeting in a venue? Lets say up to 30 arriving
>Here's a repeat of the info I sent out a few weeks ago,
>with the name of the audio card manufacturer corrected
>(I got it wrong in the original e-mail).
> twin 2.8 GHz Xeon on Supermicro motherboard (I think)
> 1 Gb memory
> Winnov Videum 4400 VO video capture (4 streams, one card)
> Matrox Parhelia 256 Mb display card (we only needed 2 main
> onboard 100 Mbit ethernet
>Spot the non-information about sound. Here's the story.
>I got Echo Audio cards (stereo, balanced I/O) cards but when we
>enabled them, they played back for about half a second and
>then produced a lovely blue screen. Turns out their cards
>don't work with Xeon processors - the memory access mechanism
>is subtly different from Pentiums, and the Echo Audio cards work
>with Pentiums and Athlons, but not Xeons.
>In a panic (days to go before VERY high profile demo - UK
>Minister for Science!) I found that the onboard AC97 audio
>chipset actually was full duplex, so added a balanced-unbalanced
>interface (we use Sonifex, but any will do) and a couple of
>stereo mini-jack to twin phono leads and we were away.
>I have now found that E-Mu 1212m cards do support Xeons
>(including twin Xeons) and so, as they are cheaper than the
>bal-unbal interface and save 1U rack space, will try those in my
>On the display front, we are about to try the Matrox QID which
>has, at long last, surfaced - 4 outputs from a single PCI-X or
>We haven't done any stress tests, but from experience with
>3 single processor 1400 MHz Athlons and much slower display
>card (Matrox G200 PCI) I would be very surprised if the above
>doesn't cruise along with 20-30 incoming video feeds.
>Hope that helps
>Chris Osland Office tel: +44 (0) 1235 446565
>Digital Media and Access Grid Medialab tel: +44 (0) 1235 446459
>BIT Department Access Grid room tel: +44 (0) 1235 445666
>e-mail: C.D.Osland at rl.ac.uk Fax: +44 (0) 1235 445597
>CCLRC Rutherford Appleton Laboratory (Bldg. R18)
>Chilton, DIDCOT, Oxon OX11 0QX, UK
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>>Thanks for any help,
>>Deb Agarwal e-mail:DAAgarwal at lbl.gov
>>MS50B-2239 phone :(510)486-7078
>>Lawrence Berkeley National Lab URL: http://www-itg.lbl.gov/~deba
>>Berkeley, CA 94720
Bob Riddle (bdr at internet2.edu) Technologist,Internet2
3025 Boardwalk, Suite 100 Ann Arbor, Michigan 48108
Business Phone: 734.913.4257 Fax Number: 734.913.4255
"Math illiteracy affects 7 out of every 5 people"
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