Re: [R] predicting memory usage

From: jim holtman <jholtman_at_gmail.com>
Date: Mon, 18 Feb 2008 12:58:21 -0500

If this is numeric, then for just storing one copy, you will require 86000 * 2500 * 8 = 1.7GB of memory. You should have 3-4X that if you want to analyze it, so you might need about 6GB of physical memory and a 64-bit version of R. Is there some other alternative? Do you need all the values at once, or can you use a database to access the portions you want?

On 2/18/08, Federico Calboli <f.calboli_at_imperial.ac.uk> wrote:
> Hi All,
>
> is there a way of predicting memory usage?
>
> I need to build an array of 86000 by 2500 numbers (or I might create
> a list of 2 by 2500 arrays 43000 long). How much memory should I
> expect to use/need?
>
> Cheers,
>
> Fede
>
> --
> Federico C. F. Calboli
> Department of Epidemiology and Public Health
> Imperial College, St. Mary's Campus
> Norfolk Place, London W2 1PG
>
> Tel +44 (0)20 75941602 Fax +44 (0)20 75943193
>
> f.calboli [.a.t] imperial.ac.uk
> f.calboli [.a.t] gmail.com
>
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>

-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

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Received on Mon 18 Feb 2008 - 18:00:54 GMT

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