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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Is extra CPU on USB dongle possible? [on hold]

Is it theoretically possible to build a local cluster for distributed computing using any type of a dongle plugged into a USB or HDMI port, and connecting to the Linux console inside over SSH just ...
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1answer
59 views

How can I list all IPs when Consul Cluster DNS is queried?

I have a 5 node Consul Cluster. When I run the DNS command below, it lists only three IPs at a time randomly. How can I have all 5 IPs listed at the same time (randomly) as opposed to three at a time? ...
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2answers
431 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 ...
0
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2answers
18 views

two screen layer: reconection via ssh

my question is how to best manage two layers of "screen" sessions: In my institute we have a compute cluster for numerical simulation. To login on that cluster one has to go via a load balancer who ...
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0answers
8 views

Home directory defaults to different machine in cluster

I am relatively new to the Linux and I stumbled to the following issue. I have a cluster of four machines. I have Cloudera agent installed on them. I want to run Apache Spark task, in this task I have ...
4
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60 views

Diagnosing iSCSI bottleneck

I just got my hands on a few DL380 G5s, and I thought I would use them in my home lab to test out the creation of a Hyper-V cluster using an iSCSI storage setup. I have installed Server 2012 R2 on all ...
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1answer
70 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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2answers
79 views

3TB NTFS Volume Allocation Unit Size

Getting ready to deploy a 3TB to be used as shared backup and file storage for Windows 7/10 and Linux. I know I need to set it to GPT partition table, but what I'd the best cluster/allocation unit ...
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27 views

Extensible Linux Cluster Operating System

Assume I have a laptop(2 cores, 4G memory, 512G regular disk) running ubuntu and a desktop(4 cores, 16G memory, 512G ssd disk) with no operating system installed(i.e. a new suite of computing ...
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13 views

Accessing data on a cluster through ssh

I have compute access on a mac pro, and am planning to get storage access on a linux based cluster to which I can ssh into. Is it possible to use the mac pro for my compute needs, but keeping the ...
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2answers
72 views

Upgrading gcc for a specific user account

I work on a computing cluster running CentOS6/RHEL6 that I share with ~100 other users, overseen by a single IT admin. Recently, I started writing in C++, and some of my code depends on C++11. ...
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22 views

Creating a cluster on Ambari

I have installed ambari and the server is running - as can be seen by the screenshot. What is the procedure to then create a cluster? The documentation literally says "follow the onscreen ...
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25 views

How can I list all head node host names on a network?

We have multiple clusters available at work. I don't know the names of all of them. How can I get a list of all head nodes available?
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12 views

I have created an user in ubuntu cluster, cannot login to the other nodes using the same credentials

#ssh -v atmos3 ......................... ...... debug1: Trying private key: /home/sghimire/.ssh/id_rsa debug1: Trying private key: /home/sghimire/.ssh/id_dsa debug1: Trying private key: ...
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1answer
27 views

Virtual SAN not recognizing any disks

I'm trying to set up a virtual san but can't seem to add any disks. I made a cluster and added the hosts. Here's what I get when I go to disk management in the cluster: ...
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21 views

How do you create a sql 2014 cluster disk for a cluster across multiple hyper-v machines

I have an SQL 2014 cluster spread across multiple physical machines running Windows Server 2012 and Hyper-V. I'm attempting to install Skype for Business 2015. However the install script appears to ...
0
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2answers
41 views

File sharing between a cluster of linux machines

I have a cluster of 6 machines. The other day we had a power cut and the fully functioning cluster turned off. Now we have turned it back on its no longer functioning and the person who was knew what ...
1
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1answer
128 views

SSH Bash script for repeated commands on a network cluster

I have a network cluster of about 100 machines, a piece of software and a large list of different parameters for the software. I want to use the cluster to speed up the calculation, so each machine ...
1
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28 views

union-mount file system that actually deletes from all layers

Here's my use-case: I have roughly a dozen machines loosely clustered together, each with a few hundred GB partition that's currently not used. I would like to make a scratch partition so that users ...
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28 views

Cluster url fails for port 8080

I have configured a clustered with 2 servers. Server1 IP: 10.200.200.20 Server2 IP: 10.200.200.21 CLUSTER_IP : 10.200.200.24 Modular Disk storage array IP: 10.200.200.22,10.200.200.23 My application ...
2
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1answer
359 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, ...
2
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1answer
136 views

Setting up cluster with vagrant

I want to create a cluster of 4 CentOS VMs using Vagrant. I installed Vagrant and VirtualBox on my Widnows machine, downloaded the CentOS 64 box and created the cluster. Steps: Execute 'vagrant box ...
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1answer
1k views

ssh connection error “Permission denied (publickey)”

So I have been trying to build ssh connections between google cluster container containing 1 master node and 2 worker nodes. I have used ssh-keygen to generate key pairs for all three nodes, send the ...
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2answers
627 views

torque in Cluster [closed]

I am learning and have some questions about using PBS to submit jobs in a cluster. (1) If a job is parallelized by MPI and run by mpirun without using qsub, it cab be running on different nodes. So ...
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1answer
3k 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
142 views

Configuring a cluster

Our cluster is a linux cluster with Torque and Maui. I am reading tutorials online and find that the compilation is only on the head node, and after submitting the job by qsub, the other nodes are ...
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3k views

Jobs not running under Torque, installing Maui didn't help

So I just installed Torque on a small cluster we're setting up, and everything seemed to have gone quite smoothly. I have pbs_mon running on the compute nodes and pbs_server running on the head node, ...
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1answer
65 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
35 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
34 views

Does LSF io index report NFS io?

We use SONAS for our filesystem on our cluster and I have noticed that the load on SONAS does not necessarily correlate with the value of io on the cluster nodes when I run lsload -l. Is it possible ...
0
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1answer
566 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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3answers
4k 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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268 views

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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87 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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16 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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27 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
9 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
25 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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6answers
3k views

Good ways to restart all the computers in a remote cluster?

I have a cluster that I manage and from time to time I get emails from each node (and head node) begging to be restarted after an automatic upgrade. Currently, my best solution so far is a shell ...
2
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1answer
119 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 ...
3
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5answers
17k views

How to link processing power of old computers together?

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 whatever ...
2
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2answers
294 views

Safe to use a laptop as a non-stop number cruncher?

I have an Intel Core Duo laptop with 1GB RAM running Ubuntu Linux. I'd like to make it a node in a cluster and use it to crunch numbers non-stop (100% CPU work). Someone mentioned to me that in ...
2
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2answers
4k 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 ...
0
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1answer
25 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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64 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
691 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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81 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 ...
13
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1answer
916 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 ...