Re: Need to build a cluster, advice required

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Thanks for the answer, I appreciate that. What if I have a transcode
program, that is actually designed to be parrallelised? *excuse the made up
word! But you get what I mean!*

On 04/09/07, Mark Mackey <[email protected]> wrote:
>
>  Hiya.
>
> I'm not completely sure that openMosix is what you want in this case. oM
> lets a cluster of computer look sort-of-like one big multiprocessor machine
> with lots of interprocessor latency. It provides multiprocessing capability
> on the level of enabling individual processes to migrate to different CPUs
> in the cluster. What it won't do for you is parallelise an existing
> non-parallel process.
>
> So, if you set up a 10-computer oM cluster, it won't let you transcode a
> DVD 10 times faster. It might in theory let you transcode 10 DVDs in
> parallel, but in practise transcoding is quite I/O intensive so you'd get
> much better throughput just running the machines individually and letting
> each one work on its own DVD.
>
> Mark.
>
> Mr Gabriel wrote:
>
> I need to build a cluster of which I'm going to use to transcode DVD
> content, into VCD content. I've searched for some howtos, but nothing. Any
> ideas, and pointers would be appreciated.
>
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>
>
> --
> Dr Mark Mackey
> Cresset BioMolecular Discovery
>
>

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Thanks for the answer, I appreciate that. What if I have a transcode program, that is actually designed to be parrallelised? *excuse the made up word! But you get what I mean!*<br><br><div><span class="gmail_quote">On 04/09/07, 
<b class="gmail_sendername">Mark Mackey</b> &lt;<a href="mailto:[email protected]">[email protected]</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">



  

<div bgcolor="#ffffff" text="#000000">
Hiya.<br>
<br>
I&#39;m not completely sure that openMosix is what you want in this case.
oM lets a cluster of computer look sort-of-like one big multiprocessor
machine with lots of interprocessor latency. It provides
multiprocessing capability on the level of enabling individual
processes to migrate to different CPUs in the cluster. What it won&#39;t do
for you is parallelise an existing non-parallel process.<br>
<br>
So, if you set up a 10-computer oM cluster, it won&#39;t let you transcode
a DVD 10 times faster. It might in theory let you transcode 10 DVDs in
parallel, but in practise transcoding is quite I/O intensive so you&#39;d
get much better throughput just running the machines individually and
letting each one work on its own DVD.<br>
<br>
Mark.<br>
<br>
Mr Gabriel wrote:
<blockquote cite="http://mid4c472b6f0709040610h4ab0567fvb7ac65ff9930b507-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org" type="cite"><span class="q">I need to build a cluster of which I&#39;m going to use to
transcode DVD content, into VCD content. I&#39;ve searched for some howtos,
but nothing. Any ideas, and pointers would be appreciated.<br>
  </span><pre><hr size="4" width="90%"><br>-------------------------------------------------------------------------<br>This SF.net email is sponsored by: Splunk Inc.<br>Still grepping through log files to find problems?  Stop.
<br>Now Search log events and configuration files using AJAX and a browser.<br>Download your FREE copy of Splunk now &gt;&gt;  <a href="http://get.splunk.com/" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
http://get.splunk.com/</a></pre>
  <pre><hr size="4" width="90%"><br>_______________________________________________<br>openMosix-general mailing list<br><a href="mailto:openMosix-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
openMosix-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org</a><br><a href="https://lists.sourceforge.net/lists/listinfo/openmosix-general" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">https://lists.sourceforge.net/lists/listinfo/openmosix-general
</a><br>  </pre>
</blockquote>
<br>
<pre cols="72">-- <br>Dr Mark Mackey<br>Cresset BioMolecular Discovery<br></pre>
</div>

</blockquote></div><br>

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