Hola,

Este es un tema que aparece en las R-FAQ-for-Windows:

http://cran.at.r-project.org/bin/windows/base/rw-FAQ.html

Y en concreto dice lo siguiente:

"...
 2.9 There seems to be a limit on the memory it uses!

Indeed there is. It is set by the command-line flag --max-mem-size (see How
do I install R for
Windows?<http://cran.at.r-project.org/bin/windows/base/rw-FAQ.html#How-do-I-install-R-for-Windows_003f>)
and R defaults to the smaller of the amount of physical RAM in the machine
and 0.5GB less than the limit on user virtual memory for a process (most
often 2GB on a 32-bit build).

Use ?Memory and ?memory.size for information about memory usage. The limit
can be raised (if possible) by calling memory.limit within a running R
session.

The 32-bit executables Rgui.exe and Rterm.exe support up to 3GB of user
address space per process under suitably enabled versions of 32-bit Windows
(see http://www.microsoft.com/whdc/system/platform/server/PAE/PAEmem.mspx,
http://msdn.microsoft.com/en-us/library/bb613473%28VS.85%29.aspx; this is
not enabled by default). On such systems, the default for --max-mem-size is
the smaller of the amount of RAM and 2.5GB. On all but the earliest 64-bit
versions of Windows the user address space for a 32-bit process is 4GB, and
there the default for --max-mem-size is the smaller of the amount of RAM and
3.5GB.

For a 64-bit build, the default is the amount of RAM.
..."

Saludos,
Carlos Ortega
www.qualityexcellence.es
http://qualityexcellence.wordpress.com/ (*Nuevo Blog*)

2011/4/6 Víctor Rodríguez Galiano <luxorvrg@hotmail.com>

>
> Hola a todos,
>
> Tengo un equipo con windows 7 Home Premium 64 bits (8mb de RAM) y me
> gustaría saber como podría obtener el máximo rendimiento en R.
>
> He visto que hay dos o tres comandos: memory.size(max=TRUE) memory.limit =
> ...
>
> El caso es que si uso memory.size(max=TRUE) el maximo que me imprime por
> pantalla es bastante mayor en un equipo que tengo con windows xp a 32 bits
> que en el nuevo equipo que es bastante más potente.
>
>
>
>
> Saludos
>
>        [[alternative HTML version deleted]]
>
>
> _______________________________________________
> R-help-es mailing list
> R-help-es@r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-help-es
>
>

	[[alternative HTML version deleted]]

