From jeff.horner at vanderbilt.edu  Thu Feb 14 16:23:08 2008
From: jeff.horner at vanderbilt.edu (Jeffrey Horner)
Date: Thu, 14 Feb 2008 09:23:08 -0600
Subject: [Rd] Vector binding on harddisk
In-Reply-To: <47B45ABD.4010304@bank-banque-canada.ca>
References: <47B426BE.9010606@gmx.net> <47B45ABD.4010304@bank-banque-canada.ca>
Message-ID: <47B45CDC.2060803@vanderbilt.edu>

Paul Gilbert wrote on 02/14/2008 09:14 AM:
> 
> _ wrote:
>> Hi all,
>> Using big vectors (more than 4GB) is unfortunately not possible under 
>> Windows or other OS's if not enough RAM exists.
> 
> This is NOT true. It is not limited by RAM, but rather by RAM and swap 
> space.  With 500G hard disks at about $100, the more serious limitation 
> is a 32bit OS.  Speed is a different consideration, but I doubt that 
> taking over what the OS is suppose to do will be the real answer.

Umm... swap... yeah... My experience with any code that I write that 
needs to use swap is to reboot the machine and rewrite my code NOT to 
use swap.

Jeff

> 
> Paul
> 
>> Could it be possible to implement an a new data type in R, like a 
>> vector, but instead holding the information in memory, the data lies on 
>> an file. If data is accessed, the data type vector get the information 
>> automatically from the file.
>> There is a package out there (named ff) but the accessed boundary have 
>> to be declared by the user this is a disadvantage.
>>
>> Greetings.
>>
>> ______________________________________________
>> R-devel at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel
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[Rd] Vector binding on harddisk
Jeffrey Horner