[Beowulf] Help: Raspberry Pi Cluster

Eric Lee openlinuxsource at gmail.com
Mon Dec 17 01:38:10 PST 2012


On 2012/12/17 12:30, Mark Hahn wrote:
>> Thanks for the information. I would like to set up RPi cluster for some
>> bioinformatics jobs like sequences alignment and sequences operations.
>
> you really need to look at where your code is spending its time.
> the seq stuff I see is quite IO-intensive, sometimes memory-intensive.
How do I know if the application is IO-intensive or memory-intensive? 
Any tools to measure that?
>
>> And I would use OGS(Open Grid Scheduler) as DRM to manage those nodes. I
>
> it hardly matters.  for non-shared clusters, full-on scheduers are 
> massive
> overkill.
>
>> do know that ARM processors cannot provide powerful FP computing so I'm
>
> let's be honest: they do not provide high values of any metric.
> they are relatively slow in any performance metric, low memory,
> normally combined with low-performance IO.  low power as well,
> of course, which is their reason-for-existence.
>
>> One more thing, I would like to know what field is proper for ARM
>> processors.
>
> uh, the field where they are being used: embedded mobile.  the point 
> is that mobile implies dramatic power sensitivity.  to some degree, 
> there are some datacenter-ish workloads that can use ARM effectively -
> certain kinds of large-scale web-related in-memory servers.  but it's 
> unclear
> how much of that is happening yet, since there are 
> infrastructure/packaging
> issues.



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