The cluster tag has no wiki summary.
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11 views
Torque: Execution of multiple programs in one job
I have to following problem: On the cluster I'm working, we use torque to submit jobs. The minimum number of processors one can get is 24 (since this is one node). Right now, I have some programs that ...
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0answers
7 views
running R through ESS (emacs) on remote host with LSF
The cluster I work on submits jobs (interactive and otherwise) to various nodes through LSF. When I run R, a job is submitted to the cluster (interactive) and I get the R console that is running on ...
-1
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0answers
33 views
Setting up computational cluster using infiniband fails [closed]
My task: I need to assemble computational cluster, consists of two nodes using infiniband technology.
When I try to start mpirun ... for two nodes, the process hangs. If i try to use flag ...
0
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1answer
48 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 ...
1
vote
1answer
146 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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0answers
32 views
how to draw chart with libreoffice or excel using java
I have 2 coordinates, x and y and I will use to perform clustering on (it's fcm, kmeans or another related algorithm). I want to draw chart in LibreOffice or Ms-Excel without third party APIs, I ...
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0answers
128 views
ldirectord Virtual IP
I am trying to configure an Apache2 web server cluster using Linux-HA (High Availablity).
The cluster will be consisting of:
One virtual interface (192.168.100.135)
Two Load balancers (Ubuntu 12.04 ...
0
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1answer
57 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 ...
12
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1answer
168 views
Determining 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 ...
1
vote
1answer
48 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 ...
0
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1answer
109 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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0answers
55 views
1tera flop cluster? [closed]
I want to buy a $40000 1 tera flop cluster to keep it in a room. What are the standard configurations?
Cluster is supposed to do molecular dynamics simulations on biological systems.
I'm proposed ...
3
votes
2answers
318 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 ...
0
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1answer
122 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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0answers
93 views
Job Deferred even though nodes are available [closed]
Every once in a while, I run into this frustrating scenario where jobs that I have submitted don't run, even though there are resources available. This time, I think the problem might be related to ...
1
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4answers
77 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 ...
0
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4answers
383 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 ...
0
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1answer
198 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
55 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: ...
1
vote
1answer
80 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 ...
0
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1answer
896 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 ...
0
votes
1answer
72 views
Specific difference between head-node and gate-way to a cluster
In the context of computer clusters what is the difference between the head-node of a cluster
and the gateway to the cluster?
Many people seem to use the terms interchangeably so I am quite ...
3
votes
1answer
257 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 ...
2
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1answer
168 views
Can computers be linked to work together?
If you bought 10 Raspberry Pi's, could they be linked together to work as one computer?
10 Raspberry Pi's, 2560 mb ram, $350
Or would it not work?
Usage: As a desktop PC. Not lab work etc.
1
vote
1answer
184 views
JGroups hangs at GMS: address is
On starting the Alfresco service it hangs at this line when, AIUI JGroups is attempting to join the cluster. Left for half an hour it didn't timeout and move on.
Any suggestions as to what might ...
3
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2answers
290 views
How do distributed filesystems differ from cluster filesystems?
How do distributed filesystems differ from cluster filesystems?
Is it just the wording that I am getting tripped up on? Are there any significant differences between the two.
3
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0answers
280 views
Installing new rolls on existing Rocks Cluster
I am on a supercomputer research team at a small university. We can't seem to find where the CUDA roll is installed on our Rocks cluster, and we're pretty sure it was never properly installed. We do ...
0
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1answer
74 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 ...
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0answers
165 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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0answers
1k 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, ...
2
votes
1answer
671 views
Create Beowulf Cluster using 2 laptops
I've been looking into the possibility of creating a Beowulf Cluster.
"Beowulf Clusters are scalable performance clusters based on commodity
hardware, on a private system network, with open ...
2
votes
1answer
199 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
votes
1answer
428 views
How to cluster two Ubuntu Linux Desktops to run a program?
Background: For some friends in a local academic institution, I wrote a Java program that simulates the growth of the crystal in a microcellular matrix as a concurrent program that implements 100,000 ...
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1answer
145 views
chaoshunter open-source alternative
Does anyone know of an open-source alternative to Chaos Hunter?
Mainly one that could use the full power of a grid-cluster.
0
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1answer
31 views
How to find out whether libav is built on MPI/LAM?
Just what the title states ; I expect to be doing a touch of audio cleanup/format switching. My plan is to try to do this with libav. Apparently such processing is fairly intensive; hence I would like ...
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2answers
113 views
Cluster advice - batch instructions
I'm setting up a small cluster of 20 machines that will have to run a batch command. The batch will have some instructions then run a Java program that will crunch data for about 2h then return the ...
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0answers
65 views
Is there a list of applications that may be executed on a cluster? [closed]
Just what the question says -
Is there an online list of applications that may be executed on a cluster?
E.g. BOINC, SETI@Home
2
votes
1answer
145 views
Simulink - running parallel simulations
Is it possible to run Simulink calculations in parallel mode on cluster? And if its possible then what actually Simulink do when number of processes that i need is more than cluster has nodes? Thank ...
2
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1answer
349 views
Clustering with Adobe software
i find myself working a lot with Premiere Pro, After Effect, Encoder and Encore, and i was thinking if there is a way to share the computational load to some computer on the same lan to speed up all ...
2
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6answers
4k 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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2answers
1k 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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0answers
175 views
linux cluster + want to unlock but from clusvcadm -l I get locked
I have linux cluster
when I do
clusvcadm -u
I get
Resource groups unlocked
but in order to verify I do
clusvcadm -S
but I get:
Resource groups locked
why?
in fact the linux is realy ...
2
votes
2answers
334 views
Can I restart a PC remotely if it is unreachable (down)?
We have a warewulf cluster of about 20 nodes being standard PC boxes (I believe ATX, 4-year old) w/o hard drives - they boot from master machine via LAN. Some of the nodes tend to crash and we ...
1
vote
2answers
627 views
Build a faster computer using old cpu? [closed]
I have a bunch of old CPUs lying around in my house...
Most of them are Pentium D or Pentium 4's...
Is there a simple way in which I can bunch them together and build a better computer?
Or anything I ...
1
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0answers
59 views
Can I set up PVM in such way that master doesn't start own tasks?
We have a Perceus cluster (Warewulf) consisting of 4-core master and a number of 4-core nodes. I can start PVM on the master and then add all nodes - it works fine. However, there are other guys who ...
4
votes
3answers
3k views
3-4 old computers = general purpose cluster?
I have 3 old computers lying around right now running a P2 at 800 MHz(?), Intel Mobile 1.6 GHz, AMD Athlon XP 2000+ at 1.66 GHz, and (might not use this) P4 at 2.7 GHz, all with 512 MB Ram, and am ...
3
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3answers
875 views
Is it feasible to build a home Plug PC cluster?
Is it possible to build a performant cluster for the home based on something like a plug pc:
http://www.marvell.com/platforms/plug_computer/
I realise the Marvell Plug PC is not very powerful but in ...
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5answers
252 views
Alternatives to blade servers for a home based cluster
I am running currently about 9 servers at home but they take up a lot of space and the cabling is driving me mad. Is there any alternative to blades for a home based cluster?
2
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5answers
2k 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 ...
3
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3answers
4k views
Hard disk with bad clusters
I have been trying to backup some files up to DVD recently, and the burn process failed saying the CRC check failed for certain files. I then tried to browse to these files in Windows Explorer my ...
