Re: [ilugd] Minutes of meeting (18th January 2004)

2004-02-03 Thread Sudev Barar
On Mon, 2004-01-19 at 19:42, vivek khurana wrote:
 Hi! Everyone
  Here are the minutes of january meeting of linux user
 group delhi, conducted at Faridabad Industry
 association. I had tried to be serious at the places
 where important things are discussed. So here are the
 minutes of meetings
Have updated the www.linux-delhi.org site with minutes and some press
clippings.
Ashwin...where are you? You also need to move the event (December meet)
from upcoming event to recent event so that the next upcoming event is
highlighted.
-- 
Sudev Barar

Learning Linux



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Re: [ilugd] Minutes of meeting (18th January 2004)

2004-01-20 Thread Supreet Sethi

 anyways, what is exciting is, that using thin-clients, several people
 could simultaneously work on such demanding tasks through a centralised
 high-powered server, which in turn could throw its back-end processing
 to a farm of renderers or grpahics processing nodes, if need be
 
 this part of ltsp really excites me.
 
 :-)
 LL
 
LTSP or NO LTSP. Xwindow protocol is a way of sending keypad and pointer
events to the node which is actually running the application. The major
advantage of such scenario is low-processing power clients and
underline highly effcient /underline usage of resources like
memory/processing power/secondary memory on underlineone/underline
node. 

What I do'nt understand where you got the idea of cluster or render farm
on backend. You can refer to an article in Network Computing about thin
client solutions few issues back. 


Xwindow protocol has no (free) version of load balancing mechenism. So
multiple X Application server may not be possible as far as my knowledge
goes.

There are commercial solutions with X protocol (load balanced), one can
take a look at that, but that means the cost benefit between running X
to something like citrix.



BTW there are better ways of doing render farm/ image processing using a
protocol called RENDERMAN from Pixar. I think you must have come across
that name. This we can further discuss off-list if you like


Supreet 



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Re: [ilugd] Minutes of meeting (18th January 2004)

2004-01-20 Thread Sudev Barar
On Tue, 2004-01-20 at 16:39, LinuxLingam wrote:

 anyways, what is exciting is, that using thin-clients, several people
 could simultaneously work on such demanding tasks through a centralised
 high-powered server, which in turn could throw its back-end processing
 to a farm of renderers or grpahics processing nodes, if need be
See the openmosix howto on the ltsp sitewant to implement such a
cluster?
-- 
Sudev Barar

Learning Linux

Address: D10 NH2, Faridabad 121001
Tel; +91-129-5021588


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Re: [ilugd] Minutes of meeting (18th January 2004)

2004-01-20 Thread Sudev Barar
On Tue, 2004-01-20 at 16:39, LinuxLingam wrote:
 On Tue, 2004-01-20 at 11:02, Supreet Sethi wrote:
Sorry but should have changed the topic / subject for a new thread.
-- 
Sudev Barar

Learning Linux

Address: D10 NH2, Faridabad 121001
Tel; +91-129-5021588


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Re: [ilugd] Minutes of meeting (18th January 2004)

2004-01-20 Thread LinuxLingam
On Tue, 2004-01-20 at 17:51, Supreet Sethi wrote:

 What I do'nt understand where you got the idea of cluster or render farm
 on backend. You can refer to an article in Network Computing about thin
 client solutions few issues back. 
[snip]

render farm on back-end to run distributed rastarization using stuff
like renderman, or check out blender3d.org for more info. also do note
that these days, hollywood movies use linux heavily.

ltsp makes it more exciting. rather than give high-end workstations to a
team of artists to create cells and stuff, let them all work
concurrently on a centralised server (either on the same file, or on
different files that make up a large project, using ltsp, and let the
ltsp server handle rendering and ray-tracing and stuff to have things
sped up

 
 
 BTW there are better ways of doing render farm/ image processing using a
 protocol called RENDERMAN from Pixar. I think you must have come across
 that name. This we can further discuss off-list if you like


:-)
LL


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Re: [ilugd] Minutes of meeting (18th January 2004)

2004-01-20 Thread Supreet Sethi
AFAIK giving artist a PC/MAC/(or any thin client solution) platform at
any cost does'nt really matter. The central compute server cost anyways
is too high in comparison. 

Example of costs:
a normal via c3 based PC with disk can be assembled at 10,000-15,000. 

A normal compute node from a cluster vendor would comes out at 
5,00,000 - 25,00,000. And for a motion picture you would require 10-100
of such machines.

Cost quotes come from:

eSys which is vendor of thin PC.
Cluster costs derived from HP, IBM sites (Power4, IA64). Racks cost a
seprate


Cost effectiveness is not a debateble point in case of LTSP being used
for studios.

So lets go on to other points then (for and against) diskless solutions 

Management- Administration and management cost definately is much lower
in case of LTSP or any thin client solution. But that also means, one
needs to standardize on certain applications, like choosing Gnome as
desktop solution, galeon as browser for example sake. 

Will a artist (graphic artist) allow somebody to control how
underlinehis/underline desktop would look like. If not, then central
management point also goes for a six.

Renderman protocol does not specify that it could only be used with
local application. One can directly call remote render farm from a
underline cheap and smart /underline host, and get a good
performance since most of the network traffic would only be renderman
calls. Which in case of LTSP would also include X protocol and NFS
request.



So anyway cost benefit which I am not to sure there is, would be offset
by the costly network infrastructre needed for accomodating X protocol,
NFS and Renderman request.


PS: The links you specifed are too preliminary in terms of details
regarding Renderman. For detailed specs of Renderman protocol, there are
various books on Amazon.

For cluster vendors who provide RenderFarms which are compatible to
RenderMAn protocol:
http://www.terrasoftsolutions.com/
Tough there are many others also. I am not doing advertisement for this
company

 Supreet


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Re: [ilugd] Minutes of meeting (18th January 2004)

2004-01-19 Thread Kishore Bhargava
 archaic operating systems. During his introduction
 Kishore 'treasurer' Bhargawa reached the venue. So he
 was the next one to be introduced. Kishore started by
 snip“boasting”/snip that he had being using linux
 even before Linus Trovalds and how he got linux kernel
 in yr 1992 in India. 

I did not say that Raj did!

 He advocated the redhat
 unstable fedora before taking his seat. The

Not really advovated, just a suggestion.

Overall it was fun even though thin attendance!

Cheers...Kishore
-- 
Last guys don't finish nice.
-- Stanley Kelley, on the cult of victory at all costs


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Re: [ilugd] Minutes of meeting (18th January 2004)

2004-01-19 Thread Supreet Sethi
Just in relation to (patent) color-depth formula by Raj Mathur.
Color in applications are based on colormap that the application chooses
or it inherits from Xwindow. These colormaps are really indexs
maintained by the video card for colormmaping. These colomaping
algorithms vary from video card to video card. And driver takes care of
the mapping.

So there is in most cases a direct relationship between color depth used
and the video memory required but that cannot in most cases be expressed
in single formula.

Another aspect of concern in terms of video memory is video caching.
Application can have a double buffered output. Some application like
ones which use OpenGL rely on the library for handling the double
buffering. In most gaming video card the library uses the video memory
rather the RAM for doing double buffering. That increase the requirement
for video RAM.

 Sudev showed that you need only
 2MB of video memory to run LTSP client. At this
 juncture RAJ came up with following formula to decide
 the video memory required
   (resolution * no. of bits of depth)/ 8
 Following the invention of formula and nomination for
 Raj for Nobel Prize in mathematics, sudev described
 how to setup LTSP server and clients and showed how
 policy manipulation on the server is reflected on each
 client.  After description, there was a live demo of
 LTSP client boot. The presentation continued with
 demonstration of export features of openoffice. This
 presentation ended with discussion of cost involved in
 setting up LTSP project.
 



Supreet


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