Re: [R] Parallel writes in R

[Uwe Ligges]

On 02.04.2012 21:35, Jonathan Greenberg wrote:

R-helpers:

I'm curious what support R has for parallel writes to a binary file?
If I want to use snow to have each node write different rows of a
flat binary file (possibly out of sequence), are there any
tricks/issues I should be aware of?


This is a very hard task, since you have to synchonice the nodes. 
Typically it is more advisable to collect the rows by the master and 
write the whole file from there.


Uwe Ligges




--j



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[R] Parallel writes in R

[Jonathan Greenberg]

R-helpers:

I'm curious what support R has for parallel writes to a binary file?
If I want to use snow to have each node write different rows of a
flat binary file (possibly out of sequence), are there any
tricks/issues I should be aware of?

--j

-- 
Jonathan A. Greenberg, PhD
Assistant Professor
Department of Geography
University of Illinois at Urbana-Champaign
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AIM: jgrn307, MSN: jgrn...@hotmail.com, Gchat: jgrn307, Skype: jgrn3007
http://www.geog.illinois.edu/people/JonathanGreenberg.html

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