COS495 - Instructions for Using the Display Wall
I - Uploading Files
- Once you are done with your image, save it in (non-progressive) JPEG
format. In Photoshop when you do "Save As..." and select
JPEG, you will be prompted with a "JPEG Options" dialog box; just
make sure that the "Progressive" option is NOT selected.
Also, as we already announced in class, the size of the display wall is
6000x3000 pixels so you should probably make sure your final image is of
that size.
- Save a copy of your image in your account (princeton or cs.princeton) so
that you can access it over the network.
- Walk over to Rm 318b (the display wall lab).
- You will need the access code for the lab to get in. If you do not
have the access code, send email to Amal at amal@cs.princeton.edu
(or ask one of your classmates).
- In the lab, you will need to use the PC right in front of you -- this is
the only one with a monitor that has a huge "Donated By Intel"
sticker on it. This is the PC that controls the display wall.
When you're seated at this PC, on the table on your right you will find a
"Display Wall Help" manual. Most likely you won't need to
use this, but it's there in case you need it.
- You can log on to any of the PCs in the lab using the username "vmmc"
and a password that you'll find scribbled on the cover of the "Display
Wall Help" manual, and also in the instructions inside the
manual. Usually username "vmmc" will already be logged on so
you won't need to login again.
- Once at the PC that controls the display wall, you need to upload your
files. You should upload your files into the directory
"cs495s02" -- the network drive U: is mapped to this directory
(cs495s02 on visfs). This folder is shared by the class and writable
by everyone, so please be careful not to delete (or accidentally overwrite)
any files in this folder. In the "cs495s02" folder, I
suggest that you create a subfolder (labeled with your username, perhaps) in
which to copy all your files.
- You can upload your files by running SSH Secure FTP (which you'll find on
the desktop) to get to your account. (If you have put your image
file(s) in your CS account, then you may alternatively map a network drive
to \\newfs\<your-username> and copy your files over). Remember
to put all your files in "cs495s02/<your-subfolder>".
II - Displaying Image
- There is a program called "Dwall Control" running on the
above-mentioned PC. You will need to use this to control the wall.
- If the display wall is blank/dark, then it may either be in Standby mode
or it may be Off. If it's in Standby mode, you should be able to hear
the (rather loud) hum of the machines from behind the wall. If the
wall seems "silent", then it's Off.
- If the wall is Off, in the "Dwall Control" application, from the
"Projectors" menu, select "On (power)" -- you will have
to wait a few minutes for all the projectors behind the wall to turn on.
- Otherwise, if the wall is in Standby mode, in the "Dwall
Control" application, from the "Projectors" menu, select
"Standby (on/off)" to bring it out of Standby mode. You will need
to wait a couple of minutes at this point.
- In the "Dwall Control" application, from the "Tasks"
menu, select "Start Wallscreen". (Don't select "Start
Wallscreen (Frist)" please!)
- Next, from the "Tasks" menu, select "Show
Image". This prompts you to select an image so you can browse to
the appropriate folder in U:\\cs495s02\
and select your image.
- <Stare at the huge image for a while...>
- When you are done looking at your image, from the "Tasks" menu,
select "Stop Wallscreen".
- Now, from the "Projectors" menu, select "Standby
(on/off)" to put the wall back in Standby mode.
- If it is after 5-6pm and you expect that you might be the last person
using the wall for the day, please turn the wall off. NOTE: After you
put the wall into Standby mode, you *must* wait 3-5 minutes (till the
projectors have cooled) before you can turn the wall off. To
turn the wall off, from the "Projectors" menu, select "Off
(power)".
If you have any questions, send Amal email (amal@cs.princeton.edu).
You may also find the "Display Wall Help" manual useful . If you run
into a serious problem with the wall (please don't!) the person in charge of the
wall is Grant Wallace (in Rm 312). Some of the screens in the wall do not
work from time to time, i.e. they just stay blank If this happens, just
ignore it -- we will try to have everything working perfectly for the in-class
presentations next Tuesday.