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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Open MPI: max processes on a single node

I am using openMPI (ver 1.6.2) on a CentOS 6.6 cluster. I am trying to find ways to increase no. of processes on a single node using OpenMPI. Each node on my cluster has 20 cores. I trying with a ...
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10 views

SMB Share on Hyper V Vms kills the network [on hold]

We have 4 Hyper V VM installations on 2 HP DL 380 G8 servers and have they are connected to HP NSA 2040 SAN Storage through 6 Gbps Fibre channel. The physical machines are clustered. Out of the 4, 2 ...
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12 views

Setup multi node cluster in ubuntu 12.04 using Cloudera?

I setup five virtual machines (Ubuntu 12.04 LTS ) using Virtual box, then I configured ssh password less authentications from master system to all slave systems. I have installed Cloudera CDH 5.3 in ...
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23 views

copy files and folders from cluster to desktop using PuTTY [duplicate]

I would like to copy files and subfolders from a cluster that runs pacman to a Windows desktop computer using PuTTY. First I would like to copy one specific file or subfolder as a test, for example ...
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11 views

Setting up a Microsoft Cluster in a virtual enviroument

I currently have three physical hosts (Host1, Host2, and Host3) that are running Win2K8 R2 and each using installed roles: File Services and Hyper-V and installed features: Failover Clustering). ...
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18 views

Is there a way to figure out the exact sector numbers of clusters “chkdsk” reports as bad?

Recently I run chkdsk after it finished it showed 4 clusters in size 4kb are bad, is there any way to know the sector numbers of them?
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1answer
8 views

Windows 2003 cluster not able to initiate

I am having trouble getting a service started in windows 2003. This is the cluster log, not able to deduce what is wrong either. Any help would be appreciated, tks. As it is with any log, it is ...
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1answer
17 views

When overwriting a file, how does this effect the filesystem NTFS?

Say a I have a secondary hard drive that has been defragged and optimized so that the data is a nice neat continuous block with no missing spaces/clusters. Like a solid brick wall. If I copy a file ...
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14 views

Create Cluster in Excel by different columns [duplicate]

I have 2 columns of data, and I want to automatically sort them in a cluster way, at Microsoft Excel. Column 1 Yes No Column 2 Platinum Gold Final Result: Yes Platinum Yes Gold No Platinum No ...
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60 views

Apache Spark cluster through a proxy?

This is more a speculative question to those with more networking / Apache Spark experience than me. My current setup: two 32GB, 4GHz Core i7 machines I'd love to tie into a Spark cluster. However, ...
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15 views

Submite multiple jobs simultaneously with qsub

I have a large number of jobs named sequentially as: job_01.txt job_02.txt job_03.txt ... job_20.txt Currently I just send each one separately using: qsub job_01.txt and so on for the rest. Is ...
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35 views

After installing slurm 14.11,there is not any script in /etc//init.d/

After installing the slurm 14.11,there should be a a slurm script in /etc/init.d/,but I did not find it in the directory,what's the reason?
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48 views

Hardware errors too frequent or expected?

We have a small linux/Xeon cluster at work, and lately several hosts have rebooted on their own. The maintenance team saw errors in /var/log/mcelog and replaced the memory in one host today. I decided ...
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1answer
55 views

Attach to the same tmux session from different nodes of a cluster

I'm working on a computing cluster which has several hundreds of nodes. A load-balancing scheme picks an idle node to login to when ssh-ing into the cluster. As a result, it is very unlikely to ...
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14 views

Cluster 2 physical PCs using Hyper-V 2012

I recently purchased 2 identical PCs for development purposes, we are running Hyper-V 2012 and I just wanted to know if there were any guides or similar that show how I could cluster both PCs ...
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21 views

Batch WinRAR Cluster Error

I've recently have had a problem with a small project of a batch cluster WinRAR cracker of numeric. I have a master file that controls all the variables for the clusters and have 8 clusters. I have ...
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1answer
21 views

generic remote process accelerator

is there a solution to accelerate a local process using remote PC CPUs (and/or GPU)? My ideal solution should: work without the need to rewrite the app to use a specific library; work on ...
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52 views

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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2answers
280 views

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

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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53 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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36 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
86 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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1answer
190 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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2answers
112 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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273 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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2answers
68 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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4answers
129 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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45 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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159 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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367 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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1answer
46 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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2answers
1k 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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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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320 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
54 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
207 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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151 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
2k 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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56 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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2answers
131 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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1answer
60 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
29 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
218 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
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
143 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
573 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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1answer
80 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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385 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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2answers
1k 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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281 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 ...