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Re: st: Two wishes


From   SamL <saml@demog.berkeley.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Two wishes
Date   Tue, 23 May 2006 01:03:31 -0700 (PDT)

I've checked with top before.  It's RAM for me.  I didn't know stata did
that.  How do I get it to do it, or does it do it automatically?

Sam

On Tue, 23 May 2006, Neil Shephard wrote:

> On 5/23/06, SamL <saml@demog.berkeley.edu> wrote:
> > Going the other way, I wish stata would allow me to use disk as RAM, so
> > that the limit on the size of my (single) dataset would be my total
> > diskspace (some 200 GB counting the disks I have on the Unix cluster)
> > rather than the RAM on the largest machine in the cluster (only 12 GB).
> > Although I have no plans to use a 200 GB file, I have had need of more
> > than 12GB, and I have had to make tough choices (and some complex
> > time-consuming runs) to get it under 12GB--not to mention how popular this
> > makes me to all the other people in my cluster who need the same machine
> > at the same time.
> >
>
> Stata already does that, but such methods are inherently slow (as
> you've found) because of the massive difference in speed between I/O
> (Input/Output) on RAM (v. fast) compared to HD (v.slow).
>
> Check using the command 'top' to see if your analysis is really maxing
> out RAM or CPU.
>
> Neil
> --
> "Laziness is nothing more than the habit of resting before you get
> tired."  - Jules Renard
>
> ()  ascii ribbon campaign - against html mail
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>
> Email - nshephard@gmail.com / neilshep@cyllene.uwa.edu.au
> Website - http://slack.ser.man.ac.uk/
>
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