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Old 01-04-2015, 09:30 PM   #1
sakisGcoder
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Question rocks cluster help


hello i'm a student of a high school and well our IT professor told us to do a project until the 1/2/2015 (day/month/year) [might get an expansion for such a project] so i and my friend instead of making a powerpoint for the polution or something like that decided to build a cluster rom.We are not willing to change the project's subject despite the fact that we can make such a presentation in half an hour.we have the following hardware:
rocks DVD 6.1.1 sand boa x86_64
8 (i3 2100 @ 3.1 GHz) nodes
an unmanaged TP-LINK TL-SF1008D 8 port switch [we don't need internet (external network) connection]do we?
so if i understand it right:
we connect every node to the switch
we format the head node typing build and following the instructions of the dvd
we open the terminal and type insert-ethers
we select compute and hit enter
then we boot the slaves with the dvd and do nothing it will do it all itself (except partitioning)
then we should see the nodes on the head nodes insert-ethers / compute window
and then we are done.?
Due to the holidays schools are down so i am trying this at my TP-LINK TL-SF1008D 8 port switch (not connected on a router) and 2 computers with P4s but everything else is diferent(totaly everything)just both of them have one NIC and a rocks 6.0 i386 DVD but something goes wrong.Probably the network configuration on the frontend.You might find this very simple, and alright i may have built the previous year a CNC and programmed it with a 2GL just from 3 electric motors but i still don't know much for networks.Please teach me how to calculate or find the values (public ip,public netmask,private ip,private netmask,dns,gateway) required for the setup of the cluster.I've spent months searching and the best i found was for some virtual machines https://www.youtube.com/watch?v=nulcp3JCVm0
and https://www.youtube.com/watch?v=_AkCPunTw_Q
can i use the numbers they used? (i don't think so) Please help us , we are in a hurry (we build also multicore programs [pi is ready] to stress the cluster after it is done)
thanks in advance.
I'm also new to the forum if i posted on the wrong section please move it where it belongs, i'm sorry if that happened.
 
Old 01-17-2015, 06:17 PM   #2
unSpawn
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Quote:
Originally Posted by sakisGcoder View Post
we don't need internet (external network) connection]do we?
No you don't. You can have a completely isolated cluster.


Quote:
Originally Posted by sakisGcoder View Post
so if i understand it right:
we connect every node to the switch
we format the head node typing build and following the instructions of the dvd
we open the terminal and type insert-ethers
we select compute and hit enter
then we boot the slaves with the dvd and do nothing it will do it all itself (except partitioning)
then we should see the nodes on the head nodes insert-ethers / compute window
and then we are done.?
As far as I've read it the Rocks documentation lists the steps quite similarly, yes.


Quote:
Originally Posted by sakisGcoder View Post
but something goes wrong. Probably the network configuration on the frontend.
I wouldn't try guessing but instead look for "odd" behaviour of compute nodes (like not being able to connect to the frontend node DHCPd) and then check errors in the frontend node log files.


Quote:
Originally Posted by sakisGcoder View Post
Please teach me how to calculate or find the values (public ip,public netmask,private ip,private netmask,dns,gateway) required for the setup of the cluster.
Since your switch makes up a LAN network you can configure it to use any IP address range like 10.0.0.0/8 or 192.168.0.0/16. The IP address of the switch then is your gateway address and if you must use DNS you'll have to configure ISC BIND (or equivalent) on the frontend node or make your compute nodes use a hosts file.


Quote:
Originally Posted by sakisGcoder View Post
can i use the numbers they used? (i don't think so)
No idea but I wouldn't.
 
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Old 02-10-2015, 06:50 AM   #3
sakisGcoder
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Registered: Jan 2015
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Distribution: kali,debian,playstation2 linux,trying rocks
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error in dhcp file fixed and works thanks
 
  


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