[R] Allocate virtual memory on hard drive

Jie jimmycloud at gmail.com
Mon Mar 11 17:45:33 CET 2013


The vector contains 1.5*10^8 numeric elements. It takes about 3~4 GB in memory.
And I would like to find percentiles: 0%, 0.5%, 1%, ... 100%
I use 64 bit R and windows 7 with 24GB Ram.
Thank you.

Best,


On Mon, Mar 11, 2013 at 12:40 PM, jim holtman <jholtman at gmail.com> wrote:
> R runs with data in memory.  What type of system are you running on (32 or
> 64 bit)?  How big is your data; you did not provide much information about
> your problem.  Depending on what you what to 'sort', there might be other
> ways of doing it.  This gets back to my tag line: "Tell me what you want to
> do, not how you want to do it".
>
> On Mon, Mar 11, 2013 at 11:20 AM, Jie <jimmycloud at gmail.com> wrote:
>>
>> Dear All,
>>
>> I have a long sequence and want to find the quantile, or sort it first.
>> It seems sort() or quantile() reaches the memory limit.
>> Is there a way to allocate more memoy on SSD for R when startup, so
>> that R can use both RAM and hard drive space?
>> Thank you.
>>
>> Best wishes,
>> Jie
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
>
>
>
> --
> Jim Holtman
> Data Munger Guru
>
> What is the problem that you are trying to solve?
> Tell me what you want to do, not how you want to do it.



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