[nfbcs] Possible Computer Science Speaking Topics

[Curtis Chong]

Louis:

Thanks for this idea.  I will follow up and try to find a good contact to
talk about this.

Cordially,

Curtis Chong


-----Original Message-----
From: Louis Maher [mailto:ljmaher at swbell.net] 
Sent: Friday, March 01, 2013 4:19 AM
To: 'Curtis Chong'
Cc: NFB in Computer Science Mailing List
Subject: Possible Computer Science Speaking Topics

Curtis,

I have attached a question, and responses, that I send to the Orca Linux
screen reader list.  I have also pasted the document below my signature.  

Information on the Orca screen reader can be found at
(http://projects.gnome.org/orca/).

It seems that Orca is a very hands-on system that you have to assemble out
of various parts.  I suspect that since there is no money in Orca, it has
not  become a smoothly packaged product.

It would be interesting to find a speaker knowledgeable about Orca, since
most of the heavy science is still done on Linux.

Any suggestions for a speaker, or solution to my problems, would be greatly
appreciated.

Good luck on your job hunt.

Regards
Louis Maher
713-444-7838
ljmaher at swbell.net
---- 
From:	Louis Maher <ljmaher at swbell.net>
Sent:	Sunday, February 10, 2013 12:49 PM
To:	Orca List (orca-list at gnome.org)
Subject:	Orca Running on Remote Servers

Folks,

My company uses Red Hat 5.7 on Massively Parallel computers.  A few of the
nodes of the cluster of 
processors are login nodes.  These login nodes are used for code editing and
job submission.

People in our company access the cluster through VNC (virtual network
computing) which provides a 
graphical user interface (GUI) window running on Windows 7.

I access the cluster using the character-based SecureCRT windows program
which provides a SSH 
(secure shell) session into the cluster.  Once in the cluster, I use the
Linux screen program to get as many 
character- based windows as I want.  The character-based approach is
limited, and I do not have access 
to the GUI-based job setup and queuing systems.  Often we write plug-ins to
commercial software, and 
that commercial software brings its own powerful and inaccessible GUIs.

Questions:

If I had a laptop running Linux, is there a way to place Orca on the remote
server and give me a GUI 
interface into the remote cluster?  

Technically I could make my Linux laptop part of the cluster, but would the
job editing and job queuing 
programs need to be running on my laptop before I could access them?

We have several domains, each with its own cluster.  If I wanted to access
these other domains, would I 
have to have a laptop specifically dedicated to each domain?

Commercially available job-setup GUI's are extremely powerful for they
provide a means to connect 
several smaller plug-ins to make complex flows.  The output of the job
scheduling GUI is an extremely 
complex XML file.  I can make small changes in this file, but writing one of
these files from scratch is not 
practical.

So my base question is:
If I had a laptop running Linux, is there a way to place Orca on the remote
server and give me a GUI 
interface into remote computers?

I will have to use Red Hat 5.7 for my effort.




Regards
Louis Maher
713-444-7838
ljmaher at swbell.net


---  
From: orca-list <orca-list-bounces at gnome.org> on behalf of Christopher
Chaltain <chaltain at gmail.com> Sent: Sun 2/10/2013 2:53 PM 

I've never done it, but my understanding is that PulseAudio will send your
audio over the network, so this may be an option.

On 10/02/13 12:57, Bill Dengler wrote:
> I don't think VNC transfers audio.
> If it did then technically it should be possible.
> I don't think it does ; so do you know of an alternative?
> Bill
> On 02/10/2013 01:48 PM, Louis Maher wrote:
--- 
From: Bill Dengler <billkd314159 at gmail.com> Sent: Sun 2/10/2013 12:58 PM 
I don't think VNC transfers audio.
If it did then technically it should be possible.
I don't think it does ; so do you know of an alternative?
Bill
--- 


-- 
2/11/2013
alex.midence at gmail.com> wrote:
> Do you use a braille display?  I wonder if vnc would transfer braille.  

Under KVM there is a mechanism to forward braille to an instance of BRLTTY
running on the host. On the guest system, if I remember rightly, a Baum
braille display is emulated, then Qemu/KVM takes care of the communication
with the instance of BRLTTY that runs on the host, and which drives the real
braille device.

I hope I have this roughly right. I haven't tried it in practice because I
access guests via terminal sessions or ssh, but it should allow you to run
Orca on a guest system.

Brlapi has network support, I think, so you might be able to send the
traffic to another machine.

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