[AG-TECH] Access Grid Launch Obstacle

Ivan R. Judson judson at mcs.anl.gov
Thu Mar 10 17:18:22 CST 2005


 

> -----Original Message-----
> From: owner-ag-tech at mcs.anl.gov 
> [mailto:owner-ag-tech at mcs.anl.gov] On Behalf Of philip pocock
> Sent: Thursday, March 10, 2005 5:03 PM
> To: ag-tech at mcs.anl.gov
> Subject: [AG-TECH] Access Grid Launch Obstacle
> 
> hello
> 
> we connect fine with vic and rat directly with mac osx to a 
> bridge in the uk. we can even send dv video over firewire to 
> other users at that bridge.
> 
> but...
> 
> using the accessgrid launcher software (requiring the 
> cumbersome us government certification! why?) we have managed 
> to connect to the venue:
> 
> https://vv2.mcs.anl.gov:9000/Venues/default
> 
> it opens rat and we can listen but our audio doesnt show up 
> in the talk level sliding scale
> 
> not one but 2! vic windows open:
> 1- called vic: Venue_Server_Lobby (with zero videos in it, 
> not even our own!) and...
> 2 - called "Video" (with our ZKM(Video) node showing up but 
> the image is grey! whereas with our direct vic connection to 
> the uk, our ZKM(Video) shows up and works fine on the same 
> machine not using the accessgrid launcher app?)
> 
> if we disregard this accessgrid launcher software, requiring 
> us government certification and bypassing its slowness and 
> using the open source software vic and rat directly from our 
> mac osx (linux-like) system, here is the big question:
> How can we connect to those listed in the Venue Client window 
> in the accessgrid launcher? How do we find or get found by 
> Venues listed with the accessgrid, or is the accessrid 
> strictly a us government approval system, not open to free 
> accessgrid agents like ours at the moment?
> 
> it is not that we wish to bypass any groups, on the contrary, 
> we wich to communicate with grid-quality video/audio, but we 
> are currently stuck at the point where the accessgrid 
> launcher opens 2 vic window, gives us no view of our own 
> video, or any others on the grid, and where the rat window 
> opens but does not measure our own sound input?
> 
> in the Venus Server Lobby, we are the only participant 
> present. the left column lists many lobbies, but when i 
> select one, the 2 current vic windows close automatically, as 
> well as the rat window, and the open-mash (the open source 
> name for vic) crashes my entire system, not always, but 
> sometimes, irregularly!?
> this does not happen with the simple non-accessgrid.launcher 
> connection system i learned from a wonderful accessgrid 
> client in the uk!
> 
> i hope someone can follow this and either tell us how to 
> connect to others without using the accessgrid launcher, or 
> how to solve the accessgrid launcher for multicast from our 
> fast connection here at zkm.

I think you're confused about how the system works. The certification you
are referring to has nothing to do with your site. It's the standard PKI
security infrastructure, you are requesting a certificate that is your
identity on the system.

The hurdle to get over that is nearly zero, if you choose to request an
anonymous certificate (it's issued instantly and you can continue using the
software immediately).

It sounds much more like you have a network problem, compounded by the
confusion about certificates (not certification), than anything else. Where
are you located? Have you asked for help from a local working institution?
I'm guessing zkm, is a reference to an institution in Germany (if my memory
is working), perhaps Michael Braitmeyer can help you, or someone from
Juelich?

--Ivan




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