What is CLUSTER LINUX ?

my-unix-dream · 06-27-2004, 12:47 PM

what is cluster linux,who should use it ??
what for ?

i am just so curiously about it.

Tuttle · 06-27-2004, 01:07 PM

--- only they know :~*

msamair · 07-29-2004, 03:48 PM

Hello.
Actually cluster is used for parallel processing.
When a compnay cannot afford a micro ,or mainframe computer. Then They use clustring.
Mean they build a parallel application and a server makes threads of that and distributes them to nodes.The nodes process that threads and return result to server.So like this so many cheap PC's can make a micro computer.

Tuttle · 07-29-2004, 04:28 PM

thanks for the explanation, it's nice to know of stuff like that. how are the machines connected? normal ethernet?

msamair · 07-29-2004, 04:38 PM

So to connect two machine u can use cross cable which does not need a SWITCH.
But if you want to connect more than two machines .You must use a SWITCH.

First put LAN card on both machines
open termianl and write neat
Now click configure.
Then create NEW
Assign both PC static IP such as
1:
IP:192.168.1.1
Subnet mask:255.255.255.0

2:
IP:192.168.1.2
Subnet:255.255.255.0

then click ok.
Then Click ACTIVATE
now ping you other mahcine with command on termial
ping 192.168.1.2
Now your machines are connected.

Tuttle · 07-29-2004, 04:42 PM

wow, that has potential! do i need to download a whole distro or can i compile it into my slackware kernel?

edit: well er the kernel i mean. or can it be a standalone app?

msamair · 07-29-2004, 04:48 PM

What distribution
For ethernet.
I cannot understand you question

Tuttle · 07-29-2004, 04:58 PM

Quote:

Originally posted by msamair
So to connect two machine u can use cross cable which does not need a SWITCH.
But if you want to connect more than two machines .You must use a SWITCH.

First put LAN card on both machines
open termianl and write neat
Now click configure.
Then create NEW
Assign both PC static IP such as
1:
IP:192.168.1.1
Subnet mask:255.255.255.0

2:
IP:192.168.1.2
Subnet:255.255.255.0

then click ok.
Then Click ACTIVATE
now ping you other mahcine with command on termial
ping 192.168.1.2
Now your machines are connected.

Sorry I though "cluster linux" was a distribution!

i have no command called "neat" so is it a single app? or is it something specific to the tasks done by a large server?
my original thought was to make a linux box networked to lots of motherboards to increase the speed of that box.

msamair · 07-29-2004, 05:02 PM

Clustering is not a distrubution.
ITs a software.
And to make so many mother board working together.
You must have a strong knowledge of C or perl to make a parallel application

Tuttle · 07-29-2004, 05:08 PM

ah thanks, i have little or no programing skills. Sounds like a brilliant idea though.
thanks again for the info

rntm · 07-29-2004, 05:10 PM

I think he wants to put his two machines into one powermachine?
You'll need OpenMosix, get the right Version for your Kernel and install it into your /usr/src/linux-XXXXX then recompile your kernel with opemosix support and there you are. either put the kernel on both machines or use it on one and put a live-linux-cd like "chaos" into the other. I think this should work. I want to do that too, but need one more eth-card and cd-drive

Tuttle · 07-29-2004, 05:15 PM

nice one rntm, i have a spare mobo with hdd and eth, i see if i can get openmozix to work. will i need to recompile applications for them to take advantage of the extra processors?

rntm · 07-29-2004, 05:49 PM

As far as I know you don't need to do anything else. Some apps won't take cluster-advantage because they only run in a single thread(or process or whatever?) but they will go to the cpu which has the lowest load. But that still gives you the double-power

Those apps which take advantage of it spread into different processes and go to both processors. So afaik pmake - and compiling is the point where clusters make sense I think ^^.

If you're on slack you can do a 'less /usr/doc/Linux-HOWTOs/OpenMosix'

Tuttle · 07-29-2004, 06:08 PM

Thanks for that, booted the other mobo & ready to tinker! Won't be done tonight though, work tomorrow