A cluster consists of a set of connected computers that work together so that they can be viewed as a single system.

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How to set up a productive and flexible Linux cluster?

I have 7 old computers that are a few years old. I want to cluster them together to create a linux cluster that will run general purpose software(not cluster specific). Is there any software that can ...
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3answers
2k views

How do I temporarily take a node out from SGE (Sun Grid Engine)?

I'm having some trouble with a specific node. Until I resolve it, I don't want any jobs to run on ii. How can I temporarily take this node out of the nodes "pool"?
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2answers
52 views

How to mount 7 desktop pc's into a 7u rack?

I am clustering 7 desktop computers and would like to put them in a rack. I have an 8U rack and 1U will be taken up by the ethernet switch. I will take out the optical drives. I plan on putting each ...
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26 views

Create a decentralized file server out of multiple desktops with Windows 7 OS

I have a bunch of desktops with Windows 7 OS and some unused hard disk space on each one that I would like to connect together and use as a big file server that can be seen by all the desktops. I want ...
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1answer
424 views

How to determine the physical location of data on a disc?

Does anybody know of a way to find out where, physically on a CD or DVD a given piece of data would be located? I am trying to watch a DVD at the moment, and am about half-way through, but it keeps ...
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22 views

recover deleted files in linux cluster

I just deleted some files that were very critical to my project on a linux cluster .I was wondering if there is a specific way to recover them. This is very critical and I would appreciate a detailed ...
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1answer
40 views

How to save job info (qstat) in SGE when submitting to qsub?

When submitting a job, I am able to provide qsub with the path for the standard output and the standard error. On the other side, while my job 12345 is running, I can access to extra info related to ...
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1answer
50 views

OS partition has 512 bytes clusters, should I convert to 4k?

I made a mistake and formatted the OS partition with 512 bytes cluster size, thinking that this will save a lot of space when storing small files (That was a long time ago, I didn't know that it will ...
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6answers
9k views

How to link processing power of old computers together?

Hey all, I'm sitting on 8 old computers of varied sorts that are more or less useless at this point for any other purpose really. Is there a way I could link their hardware or processing power or ...
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1answer
61 views

How do I display directories in colour on remote systems over ssh via Terminal?

When I do ls in Terminal.app, I see that directories on my local system are in colour. However, when I connect to a remote cluster via ssh, ls output is no longer coloured. Is there a way to have ls ...
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1answer
247 views

Create a GPFS Administrative account

i try to install GPFS on Windows Server 2008 R2, after successfully install GPFS i want to use the GPFS Command Prompt. But when i type in some Commands there comes a error: "mmstartup cannot execute ...
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2answers
52 views

CNAME to shared IP on a cluster

I'm trying to set a CNAME record (www) at ISP-A to forward to a subdomain at ISP-B. the domain/website at ISP-A works flawlessly at ISP-A, the website at the subdomain at ISP-B works also good. but ...
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1answer
73 views

virtual machine replication between two separated Hyper-v clusters

I have two identical hyper-v cluster configurations. Here is the configuration: 2 hyper-v servers in cluster with shared via fiber channel storage. There is a 10 Gbit ethernet between these ...
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0answers
31 views

How to maintain servers in general [closed]

I'm a programmer working at a tech company. I really want to learn how to properly maintain a small server cluster (say a dozen racks) which we have at work. I consider myself a power linux user, and ...
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2answers
52 views

Is there a way to build cluster machine that behaves like a single PC? [closed]

Is there some way to build a cluster from several desktops in such a way, that it can run an unprepared application and be seen as just a multicore CPU? I understand it will be a lot slower than ...
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46 views

How to setup openlava cluster environment without root?

I found the guide here: http://www.openlava.org/documentation/guide/getting_started.html and the thread here: https://groups.google.com/forum/#!topic/openlava-users/SCBPzOqoJ8U It says that openlava ...
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4answers
92 views

Manage a few Linux servers at once

I have a small cluster that consists of a few Linux nodes. There's a shared NFS, and I have the same user account with shared SSH keys on all nodes, but other than that each node has it's-own file ...
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47 views

AD RMS policy templates recieve a “no longer exists error” when they are there

Recently we added in a few new policy templates to AD RMS but when we try to apply them in FSRM they receive a no longer available error. When I try to apply the template to a folder structure I can ...
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24 views

ZSH and Passwordless access with SSH in a shared home environment

I have a small cluster with some nodes which share their home folder through NFS. I allow passwordless SSH access to the users with this script: if [[ -e $homeDirs/$username/.ssh/id_rsa.pub ]]; then ...
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0answers
85 views

Setting up an Ubuntu Linux scalable web video cluster

I'm in the process of setting up what I hope will be a robust and scalable video processing cluster for a website I'm creating. Currently, I am processing video uploads with FFMPEG on the same web ...
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0answers
258 views

Cannot copy over 7MB file to Samba cluster on Centos 6.5

I have followed these instructions (with lots of updates since it's old) to get working two nodes Samba cluster in my VirtualBox lab. It's almost done, but I experience strange issue and does not know ...
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2answers
288 views

Difference between Compute Node and Compute Cluster [closed]

I have to give a presentation on Super Computing and I came across this pdf http://yuva.cdac.in/YuvaII/YUVA_2%20leaflet.pdf. As mentioned in page 2 what is the difference between Computer Node and ...
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25 views

Fast removal of millions of files on a remote compute cluster [duplicate]

I would like to know what's the fastest way to remove massive number of files on a remote compute cluster (linux). I have 1000 folders to delete permanently - each containing about 200k files with ...
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64 views

Is there any HPL benchmark analogs for CPU/GPU clusters?

I'm building little CPU/GPU cluster for my home needs. Im using this cluster for CPU and CUDA computing. I have 3 PCs and each of it has 1 or 2 videocards and each of it has different CPUs. I need to ...
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217 views

Beowulf cluster possible?

I don't really know where to find people who have experience in building computer clusters, so I thought maybe someone from here might answer my question. Basically I have two machines at my ...
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1answer
49 views

How can I use computers with RJ-11 ports in an Ethernet network?

In my school are many really old computers with Pentium 3 processors and Windows 95. I'd like to make a cluster of them. Those computers have RJ-11 ports, not RJ-45 and I don't know if I can use an ...
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1answer
125 views

So I found and marked some bad clusters—now what?

I don't know exactly why, but hard drive failure happens to me quite often. This time around, three out of my eight drives failed almost at the same time (two HDDs and one SSD). I still don't know ...
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0answers
118 views

Can I build a cluster with Mac and Linux computers?

I do video editing on a Mac and I'd like to setup a cluster for distributed rendering. I don't really have the money to buy several Macs and make a cluster from those (besides, Xgrid is dead). How can ...
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2answers
731 views

Sharing RAM resources between 2 or more computers

I know there was a somewhat similar question before: How to share CPU or RAM? But, let me just specify it a little more... When Microsoft Windows requires more RAM capacity than available it uses a ...
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2answers
410 views

Installing Sun/Oracle Grid Engine on a single machine

I want to install a Grid Engine cluster entirely on my laptop, the "cluster" having only two nodes, one head node and one node for computing. The nodes should run within the same instance of the same ...
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2answers
99 views

Can i use multiple computers to run different programs with the same desktop environment?

Is it possible to connect a laptop to a desktop computer in a way that i can run programs on the laptop and see them with barely any lag on my desktop computer? I'm not looking for a separate remote ...
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33 views

Recycling service running in a cluster on Windows 2003 R2

In Win2003 R2, I have a two node cluster that has one resource which has a memory leak. I was thinking of setting up a batch file to recycle it using SC, NET, or better yet PSSERVICE (from ...
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4answers
1k views

Creating a home server cluster for data analysis

I've seen a couple of questions on here that are similar to what I'm thinking, but not quite. So, I figured I'd ask and see what falls out. Basically, I have 2 or 3 old, slower-ish laptops laying ...
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7answers
4k views

Building a home cluster - hardware and cost analysis [closed]

Does anyone know some links / books / anything you can think of, that describe the process of building a little home cluster (when I say home, it doesn't necessarily mean for keeping at home - just ...
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0answers
37 views

Quorum drive maintenance (cman)

We have 2 node cluster configuration (cman) with iSCSI quorum drive (qdiskd). Now there is need to make some maintenance on hardware running quorum drive (about 10-15 minutes). How we should ...
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1answer
52 views

Send files with scp while being logged on cluster interface

I have to do some work on a Torque cluster where I log on a User interface via ssh. I transfer files to my directory of the cluster and get files from the directory by using scp in my normal terminal ...
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1answer
28 views

How to know the PBS batch job submit time inside the script being excuted?

I'm using the PBS qsub to run a script on a cluster that must output a report file named with the batch job submit time. The batch job submit time is the time it joins the PBS batch job que. I ...
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1answer
173 views

How do you make multiple computers work on the same task? (hash cracking)

This is a question that's been plaguing me since I saw the following YouTube video: http://www.youtube.com/watch?v=TBXBB5sy5sA This man installed 20 video cards across 5 different rigs, all running ...
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1answer
237 views

Kerrighed cluster does not use all nodes when running OpenMP

I've been given access to a recently built cluster that uses Kerrighed. I'm the first user of this cluster, so setup and configuration problems may be a possibility. I'm also totally new to ...
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1answer
1k views

Hadoop installation on ubuntu

I installed Hadoop on ubuntu from the .deb package when I run start-all.sh I get this error I configured the core-site.xml for hdfs:localhost:9001 but i gives me the error. I think the problem in the ...
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1answer
123 views

Scheduler for sequential jobs on Linux

I am running some programs over a cluster and I would like to run them in a sequence, i.e when the first program terminates the second one starts and so on. This is so that my cluster does not exceed ...
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1answer
117 views

Configuring MPI on 2 nodes

I'm trying to create really simple "cluster" from 2 multicore computers using openmpi. My problem is that I can't find any tutorials on that matter. I don't want to use torque because it's not ...
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1answer
71 views

Shelves for super computing cluster [closed]

So I am currently running a small project with a few friends and we require a 2 Teraflop super computing cluster we have gathered all the money for this project mainly from donations and we need to ...
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2answers
947 views

ntpdate with crontab or ntpd?

(1)autostart one ntpd service in all cluster nodes and point the reference serve to one LAN server. (2)use crontab to ntpdate every certain minutes. In cluster environment, which will be a better ...
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1answer
271 views

PBS batch jobs - the qalter command

I've got a giant computation running on a Scientific Linux cluster. At present I have over 600 jobs parked in the queue, waiting for processor time, while a few are running. I'm trying to use the ...
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4answers
90 views

Distributed website server redundancy [closed]

Assume a website infrastructure is very complicated and is fully distributed (probably like most large web companies). Am I right in thinking that although there are all these extra web servers to ...
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1answer
320 views

Search NFS network volume from OS X client

I asked: How does a Mac OSX SL or Lion user search the cluster for a particular file (foo.txt) From the cluster, you would need to run some form of recursive lookup for the file desired. As an ...
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2answers
62 views

Power requirements for this build enough? [closed]

I am currently in the process of building a series of desktop base units to act as a cluster (running Linux). It will be running 24/7 mostly so i need something that lasts. Here are the specs: CPU: ...
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1answer
2k views

installing Grid Engine “cannot reach qmaster”

I want to install Grid Engine on my laptop. I am using Ubuntu 11.10 under VirtualBox 4.1.6. (The purpose of installing Grid Engine is not to compute anything, I just want a working Grid Engine ...
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1answer
116 views

update FAT32 file starting cluster number

I have a system that write files to a FAT32 partition but it frequently write the wrong starting cluster number for some files. I would like a software that is easy to use so I can just find the file ...