Gurcharan: Can you elaborate this point for us so we can fix it before going to 3.2 final?
We are running AG 3.1 b/c 3.2beta breaks the mpeg4 and extended services that we need.
On May 10, 2009, at 11:09 PM, Gurcharan S. Khanna wrote:
Cameron,
Yes, it was me. The larger project is the RIT Global Collaboration Grid, which envisions using the highest possible technology to create a single virtual space for all of RIT's sites.
See http://rc.rit.edu/collaborationgrid.html for an overview.
The current architecture for this distributed yet coordinated set of nodes is simply standard AG nodes. To reduce maintenance and enable others to contribute with minimum cost and headaches, I have been asked to move closer to an appliance model, where I would specify the hardware and software exactly so that it would be guaranteed to work first time, every time. While I have been reluctant to go in this direction, it's obviously the only way to get the buy-in I need to move quickly and credibly to deploy the collaboration grid. (Actually, I would like to go even further and develop a 'thin-client' ag node but that's another story...).
So, we just ordered parts for ten little computers which balanced small form factor with cost from NewEgg and GovConnection. Our original spec was to be able to send one DVTS stream and receive at least five, using the extendedvideoservices in the access grid. We tested the first one with this spec and it passed (except for the onboard GigE) so we ordered ten more but with a PCI GigE card. However, we really probably want to do some H.264/Mpeg4 as well but we need to run benchmarks for that still. Anticipating that we ordered five systems with a dual core processor and five with a quad core processor to see what the difference would be. The mpeg4 encoding has been quite intensive especially when you get up to 720 and 1080 resolutions so it's a real concern. We also required firewire ports for the DVTS. So far, we have only run WindowsXP but intend to try out a linux as well. We are running AG 3.1 b/c 3.2beta breaks the mpeg4 and extended services that we need.
Here are the student-built computer specs:
Motherboard, AMD 780G, Phenom FX, MATX, Max 8GB $82.00 DDR2, PCIEX16, PCIEX, 2PCI, GBE, Vid, Aud, SATA,RAID Asus Computer Intl.
Processor, Phenom II X4 940 Black Edition 3GHz, 6MB L3 $240.00 Cache, 1800MHz FSB, Box AMD
ATX Desktop Chassis, PSI300 PS, 4U, 1394, Black $60.00 In-win Developement
1GB PC2-6400 240-pin DDR2 SDRAM DIMM $11.25 (x4) Kingston Technology Corp.
Processor, Athlon 64 X2 5600+ 2.8GHz, 1MB L2 Cache, Box $73.00 AMD
Intel Pro 1000 / GT - OEM Single $27.00
80GB WD Cavier Blue SATA Internal HD 8MB Cache, $36.00 7200 RPM Western Digital
For audio (when needed) we are standardizing on Phoenix Duet Executive USB echo cancelling mics at $180 and for cameras, the cheapest firewire Sony, DCR-HC52 MiniDV Handycam® Camcorder $249.99 List Price. Output display devices will vary with location and could be LCD panels or projectors. Different locations will also affect the audio solution. We don't have an inexpensive solution for a good, single mic echo canceller for a non-tabletop venue.
I'd be happy to elaborate on any of this and why we chose it and where we're going. It's a somewhat moving target but we are trying to get something in place that will be adaptable as well.
-gurcharan
PS RIT Venue on the ANL server is where you can see where we're at at any point in time. -gsk
Purvis, Cameron wrote:
Hello, from Cameron at the University of Alabama!
I’m sorry if I have this mixed up: I believe that, in the AccessGrid Town Hall meeting Tuesday morning, that I heard about RIT building out small AccessGrid nodes based on inexpensive desktop computers. I couldn’t make out the name of the speaker well but I think it may have been you. The vision was to link several rooms together with standardized units all in a grid venue. That sounds like something that could be a very good demonstration of the technology here in Tuscaloosa, Alabama. It also sounds like something that would be fun to observe as the community starts to play with the technology.
If you guys are working on something like that – a sort of standardized design for small nodes – I’d love to be in touch with the right person to talk about that. This is something I’d like to replicate here, and would appreciate the chance to collaborate with RIT.
Thanks!
--
Cameron Purvis
University of Alabama Office of Information Technology, Research
[email protected] <mailto:[email protected]> (205) 348-4677
-- ------------------------- Gurcharan S. Khanna, Ph.D. Director of Research Computing Office of the Vice President for Research http://rc.rit.edu
Assistant Research Professor, Ph.D. Program Golisano College of Computing and Information Sciences http://people.rit.edu/gskpop
Director, Interactive Collaboration Environments Laboratory, Center for the Advancing the Study of Cyberinfrastructure http://icelab.rit.edu --- Rochester Institute of Technology 1 Lomb Memorial Drive Rochester, New York 14623-5603 Phone: 585-475-7504 ~ Cell: 585-451-8370 Email: [email protected]