This is just to tell everyone with whom I've had the pleasure of
working on the Access Grid, in the US and the UK, that I am taking
early retirement and my last working day at RAL will be December 23.
When we first set up the RAL node, one of the first of the UK eScience
nodes, I was already in a
My only experience of JMF was that it dramatically reduced
performance compared with hand coded interfaces - most things were
about a factor of 3 slower. In the AG context, if this is still
true, that could be a real bummer.
Cheers
Chris
_
.]
> -Original Message-
> From: Natalia Costas Lago [mailto:nata...@cesga.es]
> Sent: 25 April 2005 15:59
> To: Osland, CD (Chris)
> Cc: Ag-Tech Mailing List (E-mail)
> Subject: Re: [AG-TECH] Quad Capture card performance
>
>
>
> so...both provide you with 4
it.]
> -Original Message-
> From: Natalia Costas Lago [mailto:nata...@cesga.es]
> Sent: 25 April 2005 15:50
> To: Osland, CD (Chris)
> Subject: Re: [AG-TECH] Quad Capture card performance
>
>
>
> So... the 4 inputs... is just like a multiplexer?
Sounds a good idea and has the merit of a simple real-world
analogue. A couple of thoughts ...
Presumably anyone inside the meeting would be allowed to lock the
door.
Presumably the main complexity is not sorting out the mechanism
for vic and rat but all shared apps; the real-world analogue
of n
: 21 February 2005 15:56
To: Osland, CD (Chris)
Cc: ag-tech
Subject: Re: [AG-TECH] VIC performance
CPU is usually between 20 and 50% (VIC 1.1.3 always display around 20%.. and
VIC 1.1.5 displays around 50% CPU usage)..
I doesnt look like a resources issue to me
To me that would indicate that the processor, memory
and graphics card are NOT the problem.
Cheers
Chris
Chris Osland Office tel: +44 (0)
1235 446565
Digital Media and Access Grid
Natalia,
It's difficult to provide feedback without knowing a bit more.
The total video rate will depend on the processor speed,
graphics card, etc., but mostly on the network bandwidth
the display machine is seeing.
We had a single processor 1.4 GHz Athlon with a G200 (4 output)
display card, an
--Original Message-
> From: Monika Rabarison [mailto:monika.k.rabari...@ccaix.jsums.edu]
> Sent: 16 February 2005 17:14
> To: Osland, CD (Chris)
> Cc: ag-t...@mcs.anl.gov; Hill, NM (Nick)
> Subject: RE: [AG-TECH] "waiting for video" with unicast
>
>
> On Wed,
We found a similar problem, but then found that the incoming
video was attached to a randomly chosen 'outgoing' vic; between
all the vic's that were started, we could pick up all incoming
and outgoing streams. If I've got this wrong, Nick Hill should
be able to correct me.
Inelegant, but it works
> Trivial pursuit is not always known to outside US.
I thought it was started in the UK, so looked it up and
found I was wrong - it was 2, and then 4, Canadians!
It's certainly very popular in the UK.
Cheers
Chris
Chris Osland
I seem to remember that the Matrox QID card was
going to be released in AGP and PCI-Express forms; our
AGP versions are working fine, driving a console and
three projectors, all at 1280x1024 (into 1024x768 projectors!).
Cheers
Chris
__
John,
A few thoughts...
The choice between option a and the rest depends on the requirement,
not on the implementation!
Even in option b (lapel mic) the person with the mic needs to be
able to hear the far end; if this is via a loudspeaker, that means
the mic will hear it too and you will have e
I offered to set up a reference site which emitted a number of
audio test streams (white noise, pink noise cyclically looped, music,
speech, whale sounds (!)) some years back but the funding didn't
come through from the UK sources funding the rollout of AG
system at UK eScience centres. And I'm no
Natalia,
[We don't tend to use the NCSA scheduler. We used to use the
Argonne one and now usually use the UK one at Manchester. At
our site we have MS Outlook as the corporate diary system.]
Whichever scheduler you use, to the best of my knowledge
there is no elegant way of handling bookings -
Fred,
try contacting Nich Hill (see cc:) who has the relevant registry
patches for Windows XP SP2 + AG 2.3, if you can use Windows. He
doesn't have any info for Linux (any variety): although he's also
a Linux person, we're not using it for AG any longer.
Cheers
Chris
__
John,
It really depends on how many sources you will have. Usually
there are enough outputs on a Gentner/ClearOne - an XAP gives
you 12 - but you may run out of inputs. Again there are 12, of
which 8 can use the echo canceller (and other) features and the
remaining 4 can just be routed and faded
Here's a copy of Michael Miller's e-mail, for the guy who can't
find the NCSA venues server, in case that's useful.
Cheers
Chris
Chris Osland Office tel: +44
(0) 1235 446565
Digital
We're about to install not an AMX system but a Crestron and
I've agreed with the installers that they can use the other
interfaces on the XAP-800 and I'll use the serial port; I don't
believe there is any need to share the serial port.
Cheers
Chris
__
This is written in a bit of a hurry and without the software in front of me but
basically ...
Mute the feed to your speakers.
For each mic {
set the coarse gain as necessary (usually the -50 or is it -55 dB)
turn its meter on and adjust fine gain on the mic until loudish
speakin
Eric,
I'm intrigued that 'a few of' your Genelecs have developed this
problem. Genelecs are much used in broadcasting because of their
reliability and for several speakers, albeit active ones, to develop
such a fault is, I would assume, rather rare. If they're still
within guarantee get them bac
I totally agree; all-Windows, all-Linux, mixed: all work. I don't
know the status of AG on Macs these days because we don't use them.
Cheers
Chris
Chris Osland Office tel: +44
(0)
t
to anyone else,
but return this email to the sender and delete your copy of it.]
-Original Message-
From: Natalia Costas Lago [mailto:nata...@cesga.es]
Sent: 18 November 2004 17:49
To: Osland, CD (Chris)
Cc: ag-tech
Subject: Re: [AG-TECH] multinode?
mmm... r u
We've had problems because our Office ('97, I think) was too ancient
for the IgPix (?capitalization correct?) we were using. This may not
be relevant to you, but I'll just mention it anyway.
Cheers
Chris
Chris Osland
Following discussion with a few others on the list, I am about
to put together:
Iwill DK8X dual Opteron motherboard
memory slots 4+4, PCI-X, AGP 8x, AC'97 audio, Gb E'net,
Firewire (2x400), USB (4x2.0), SATA RAID(unused)
Two Opteron 246s or 248s
I think only people in the US will be able to answer - it
appears not to be marketted anywhere else (like the UK!)
Cheers
Chris
Chris Osland Office tel: +44
(0) 1235 446565
Digital
Anyone any experience (good or bad) of twin opterons being used as
basis for single computer, full room AG nodes? I guess the main issues
might be compatibility with Matrox display cards and (for us) Winnov
Videum 4400 VO capture card - we'd aim to use onboard AC'97-based
audio and onboard gigabit
I didn't think I'd be asking about Linux, but people here are
beginning to get to grips with Scientific Linux, which appears
to emanate from CERN, Fermilab and other such places - our close
collaborators on Particle Physics. As I understand it this is
a repackaged Red Hat Enterprise (but don't jum
People seem to have replied to Fred direct, rather than to the list,
but I'll just mention Elmo ceiling mount cameras: they have very
flexible (make that continuous) aperture adjustment (rather than just
the Backlight On/Off of the Sony D30/31/100 cameras, and, IMHO, are
much sharper. They accept
We are about to replace our ageing 3-computer main AG system with a
single computer solution. Two scenarios present themselves:
1. Build our own (DIY) (like last time) and run AG 2.3 + the goodies
2. Buy from inSors and (at present) run their modified AG 1
I don't believe that Venue Servers are
Just a shot in the dark, as I don't know the driver, but it
could be that some aspect of the system is not full duplex,
as raising one level is affecting another.
Cheers
Chris
Chris Osland
> Can a multisystem node use winXP as all three computers?
yes
> What is the purpose of the linux do I need it?
no
Chris
Chris Osland Office tel: +44 (0)
1235 446565
Digit
Marie-Noelle,
Access Grids can be expensive, but don't be put off by the
spec you have found: that is YEARS out of date.
1. You shouldn't be getting sticky windows with 5 or 6 participants,
unless you mean 5 or 6 nodes each with 4 feeds. Our old 3-computer
system got a bit sticky at 20 - 25 win
> Is the Rushmore significantly nicer than the G200 MMS?
Anything's nicer than the G200, IMHO! Good in its day, which was
some years ago.
> What's suitable for video capture?
Looking at our Linux box doing video capture under Linux on a
single processor Athlon XP1600, it took about 8-10% per
Don't know how Linux copes, but a pair of dual-head cards,
one in AGP and one PCI, or a triple and a dual/single, seems
a reasonable way to go to get performance. Maybe use the
tripe on AGP to drive projectors, and PCI for console. There are some
cards coming out in both AGP and PCI-X form (QID i
The main 'trick' is to set the background to black. Then, when
two images don't quite abut, or overlap, there is no double
intensity or gap in the background. Then it's just a matter of
normally arranging the windows so they don't span projectors.
Once you get into edge-blending (the term that de
at case, I am thinking about a
> single machine
> running XP. Any specific cards that I should use?
>
> Thanks,
>
> Monika
>
> On Thu, 23 Sep 2004, Osland, CD (Chris) wrote:
>
> > I'm wondering why you want to go for a 3 computer solution? Do you
&
I'm wondering why you want to go for a 3 computer solution? Do you
want to run different operating systems for different functions.
As far as I can tell from personal experience and feedback on the
list, single computer (twin Xeon or twin Athlon, 2.8 GHz or above)
systems can do everything. It's
> 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
> try running
> my room based on a single machine. Does anyone have specs suitable
> for a single machine node running
We use the same with 2x2.8 GHz Xeons, 1 Gb memory, 2x40 Gb disks,
Matrox Parhelia display card (one output to console, two to
AG displays) although we hope to move to QID card, onboard
audio (amazingly - no problems) interfaced through standard
balanced-unbalanced convertor, Winnov Videum 4400 VO.
Only for AG 2.1.2 under Windows XP, so far.
Chris
Chris Osland Office tel: +44 (0)
1235 446565
Digital Media and Access Grid Medialab tel: +44 (0)
1235 44
Matrox seem to have had a problem with the drivers. The QID
card should have been available Oct 03, then it was December,
then it was 1Q04, ... I understand that they are now on sale
with a reduced range of drivers (in terms of which multi-screen
layouts are supported) but it appears that the one
It certainly does work in 2.1.2 - we're using it! Not sure why
a similar registry edit shouldn't get it going in 2.2, but we
haven't got a 2.2 system to develop the registry edit for at present.
Cheers
Chris
Chris Osland
I hope this doesn't raise any hackles. Here goes...
I had a request for information today about Access Grid in the
context of what might be termed a mission-critical application:
realtime surgical advice in hospitals. Not a rehearsal! Live body
on the slab under the knife, surgeon wanting extra
John,
In a roughly similar situation we are installing both AG hardware
(i.e. computer and separate echo canceller) and 'conventional'
video conferencing codec. Sources will be presented to both systems
through distribution amps; outputs from the systems will be switched
to projectors/plasma scre
: 23 July 2004 12:32
> To: Osland, CD (Chris) ; ag-t...@mcs.anl.gov
> Subject: RE: [AG-TECH] PIGs
>
>
> The AGTk also works on a PIG.
>
> -Original Message-
> From: owner-ag-t...@mcs.anl.gov [mailto:owner-ag-t...@mcs.anl.gov] On
> Behalf Of Osland, CD (Chris)
&
Maybe I'm being thick, or forgetful, or both, but I can't find any
mention of PIG software on the AGTk pages. Is it all the same with
AG 2 - i.e. AG 2.1.2 or AG 2.2 can be used as PIG software? I seem
to remember that it was a different distribution in the days of AG 1.
Cheers - many thanks in a
Is it just me, or is the worldwide 'uptime' of multicast
actually going down at present? Or is this a UK-only
observation? Or am I paranoid and there are just more people
using AG, and therefore chatting on ag-tech, than before?
The problems I sense are that more suppliers are now in the
market
I know everyone has worked really hard on AG 2, but I'm still
under pressure NOT to move from AG1 while various server bits
seem to have a lot of outages. The last time I looked, we
were running 15 meetings a week from our main production
node, and people are really twitchy about moving to a syste
.
If you are not the intended recipient do not take any action on it or show
it to anyone else,
but return this email to the sender and delete your copy of it.]
> -Original Message-
> From: Ivan R. Judson [mailto:jud...@mcs.anl.gov]
> Sent: 21 June 2004 12:13
> To: 'Osland,
Just a comment from the outfield ...
I think this is the area that can allow or disallow multi-input
video capture cards (e.g. the Winnov Videum 4400 which we use)
to work - which Matt Thorpe solved with a patch to the registry
(I'm talking Windows XP here, of course). Just a request that
some m
.anl.gov]On
> Behalf Of Osland, CD (Chris)
> Sent: 16 June 2004 10:38
> To: 'David E. Bernholdt [bek] 574-3147'; ag-t...@mcs.anl.gov
> Cc: bernhold...@ornl.gov
> Subject: RE: [AG-TECH] All-Windows AG nodes?
>
>
> Don't know about multi-machine all Windows, but
Don't know about multi-machine all Windows, but single-machine
all Windows works fine. Ours are:
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
I'm replying to this before reading all subsequent mail, but can't
see any replies if the Subject: lines are consistent.
To the very best of my knowledge, the 'room node' scenario does not
mandate how many computers you use - different people have used
4 (the fourth being the control one for the e
Frank,
A very long shot, but I had a similar situation with an M-Audio
balanced audio card. After a great deal of digging and calls to
M-Audio, they admitted it wouldn't work with Xeon processors -
and I had a twin Xeon system. Nothing anywhere in the spec to say
this - it works fine with Pentiu
I can see where you're coming from, but good echo cancellers
still cost a lot (whichever sockets they use) and most people
would be happier to know that things like flourescent lights
aren't going to ruin the signals either side of the echo
canceller, and so use balanced audio connections. Short
c
Cindy,
Bad news if the registry hack doesn't also work for AG 2.2.
I'll forward this to Matt, who work out the hack, but we won't have
a new machine on which we can test out 2.2 for a few weeks.
Cheers
Chris
Chris Osland
Steve,
Maybe I'm alone in this, but I'm afraid my knowledge of
networking falls way short of allowing me to understand this note -
it seems to be targetted at network people, not AG people (very
different groups here at RAL).
Are the commands you suggest Windows, Linux or both?
What is a group a
s? I've had some
> work on XP,
> but none on OS X.
>
> Joe Monahan
> Engineering Distance Education
> Iowa State University
>
>
> On May 21, 2004, at 4:42 AM, Osland, CD (Chris) wrote:
>
> > Not a direct answer to you, but could you alternatively use
Just use the Phoenix connectors that come with the ClearOne to make up
Phoenix to XLR short leads (use male or female XLRs as required for inputs
or outputs). Then you can use any normal (i.e. XLR-based) gear with the
ClearOne and can use normal equipment on other gear afterwards. If you
use up t
Not a direct answer to you, but could you alternatively use a
FireWire camera (or camcorder). That's what I do on my laptop
(not for AG (yet!), but for other forms of VC).
Cheers
Chris
Chris Osland
Someone has just asked about the 'fix' to get the Videum 4400
working with VIC without inSors plugin or whatever. Here is
Matt Thorpe's e-mail in which he documented the registry fix
he developed.
Chris
Chris Osland
Nothing about your equipment, of itself, should cause any major
image quality deterioration. Of course, if the camera has been
used before and left pointed at a bright source for a long time,
say in a surveillance role, it could be the problem. Equally if
someone has set up the monitors for a par
I didn't think the D30 (NTSC / D-31 (PAL) ) was still made. It
has been replaced by the D-100. Neither D30/31 nor D-100 can be
successfully mounted camera-down on a ceiling, as they don't have
an image reverse feature. For that we use the Elmo PTC-250C, which
is reputed to obey the same serial p
Message-
> From: owner-ag-t...@mcs.anl.gov [mailto:owner-ag-t...@mcs.anl.gov]On
> Behalf Of Randy Groves
> Sent: 04 May 2004 11:16
> To: ag-t...@mcs.anl.gov
> Subject: RE: [AG-TECH] Quality of video in vic from Videum boards
>
>
> At 01:50 AM 5/4/2004, Osland, CD (Chris) wrote:
With - assuming four meters showing in the Performance monitor
mean that!
Cheers
Chris
Chris Osland Office tel: +44
(0) 1235 446565
Digital Media and Access Grid
> [HKEY_CURRENT_USER\Software\Winnov\Videum\vic.exe2]
> "Width"=dword:0160
> "Height"=dword:0120
> "Compression"=dword:0002
> "Source"=dword:0002
>
> [HKEY_CURRENT_USER\Software\Winnov\Videum\vic.exe3]
> "Width"=dwo
We're running a Winnov 4400 with two cameras (and have tested with
4) under Windows XP and are getting good reports of our video
quality from remote sites. I haven't looked for a way of getting
rid of the grey (gray!) surrounds yet, though.
Cheers
Chris
_
Thanks for mentioning me, but I was at fault - I WAS thinking
of silence suppression although the question was about echo
cancellation! I didn't know RAT had echo cancellation init!
Cheers
Chris
Chris Osland
>From memory you have to be careful to get the right name for your
machine in 'hosts' and such files; an alias won't do, and this often
caused people to fail in the way you've found.
If anyone else has a more authoritative answer believe them! I'm
a novice with respect to networks.
Cheers
Chris
It may just be a typo on your part, but RAT is the audio tool,
so echo cancellation is turned off in RAT, not VIC. We have AG2.1.2
running in single computer XP - just finished a demo to the UK's
Minister for Science, Lord Sainsbury (about 10 mins ago!).
To turn off echo cancellation, go to main
Matt Thorpe here at RAL seems to have found a solution to the problem
of configuring the Winnov Videum 4400 under Windows XP / AG 2.1.2
which does not require any inSors plugin. It is a moderately simple
edit to the registry in the VIC area, not the WINNOV area (as far as
I remember (I was frantic
Yup, Windows XP in a single machine - full AG 2.1.2 (not PIG).
For details, contact Matt Thorpe (see cc: above).
Cheers
Chris
Chris Osland Office tel: +44 (0)
1235 446565
Digital
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