[R-sig-hpc] How to install R on a linux cluster.

[Markus Schmidberger]

The multicore package  was released in January 2009, we did the review 
in end of 2008 )-:
Multicore has a great performance. I hope to present some results at the 
UseR2009 conference. At the moment I use the super-computer HLRBII at 
the LRZ in Munich, Germany (>9000 processors). There I have a 510 core 
multi-processor machine. Unfortunately we have some strange 
OS-load-balancing problems with the combination of R, PBS and Intel 
Compiler and more than 50 processors. Attached some first results with 
60 nodes. Up to 50 nodes snow and multicore have the identical 
performance. If you have problems which require a lot of memory and they 
can share the memory, than multicore has the better performance (snow 
than requires a lot of communication).

Best
Markus

Damiano G. Preatoni schrieb:
> In un messaggio del Tuesday 21 April 2009, Dirk Eddelbuettel ha scritto:
>   
>> On 21 April 2009 at 10:25, Dirk Eddelbuettel wrote:
>> | and you have R with MPI and the snow wrapper package. Not a bad place to
>> | start as per the Schmidberger er al paper surveying parallel computing
>> | with Linux.
>>
>> That was meant to say:  "... surveying parallel computing with R." --
>> sorry.
>>     
>
> Great review. No mention of multicore, though.
> I'm starting setting up an 8-core from Oracle (ops, I meant Sun), and I was 
> wondering if there was really any advantage in multicore vs. snow/snowfall.
>
> Any hints are welcome, will digest back to list.
>
>   
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-- 
Dipl.-Tech. Math. Markus Schmidberger

Ludwig-Maximilians-Universität München
IBE - Institut für medizinische Informationsverarbeitung,
Biometrie und Epidemiologie
Marchioninistr. 15, D-81377 Muenchen
URL: http://www.ibe.med.uni-muenchen.de 
Mail: Markus.Schmidberger [at] ibe.med.uni-muenchen.de
Tel: +49 (089) 7095 - 4497

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