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Questions tagged [cluster]

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

193 questions
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2 answers

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 dying at a specific spot in the film, presumably…
Synetech
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14
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7 answers

Building a home cluster - hardware and cost analysis

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 means it's relatively cheap and small) for…
Rook
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10
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3 answers

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 re-login into a previous machine on subsequent calls to…
elemakil
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2 answers

Wait for one or all LSF jobs to complete

With Platform LSF, is there a command that will wait for either a specific job or all my submitted jobs to finish before returning? In other words, I am looking for the LSF equivalent of the wait built-in command in bash.
Vebjorn Ljosa
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7
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6 answers

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 together over wifi and use one as like a central…
TestinginProd
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7
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3 answers

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 considering clustering them together for…
TheLQ
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4 answers

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"?
David B
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5
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3 answers

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 swap-file to temporarily store the data there, this…
davee44
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remove slurm sacct command double entries: "extern"

Jobs currently running show two entries, one of them has an .extern suffix. Completed (or failed) jobs also have a third entry: .batch. Is there a way to remove (or not show these) from the sacct output? What are these entries?
DilithiumMatrix
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5
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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 three, and have created a couple of iSCSI…
Eds
  • 427
4
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2 answers

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. According to this webpage, C++11 is supported by gcc…
abcd
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4
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2 answers

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.
Kaitlyn Mcmordie
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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 have the iso of the roll. In searching on how to…
zr00
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4
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2 answers

Get the default cluster size for NTFS

I try to determine the default cluster size for NTFS. I check this table. The problem is when the size in the boundary, for example: 2 TB–16 TB: 4kb 16TB–32 TB: 8kb Then what will be the cluster size for 16TB? It is difficult to find a disk that…
alancc
  • 155
4
votes
3 answers

How to cancel a job that is on completing (CG) state?

I normally submitted some jobs using sbatch and canceled some of them after using scancel. However, they are in state CG and I cannot remove the jobs from my list. There is any way to get ride off those CG jobs? Sadly, I'm not the administrator of…
Iago Carvalho
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