Message-ID: <Pine.OSF.3.96.1010730131320.25028A-100000@ija.csic.es>
Date: 2001-07-30T11:15:02Z
From: Agustin Lobo
Subject: Calculating CPU times for different RAM configuratio
In-Reply-To: <Pine.GSO.4.31.0107300753520.7015-100000@auk.stats>
Hi!
I have an slow process in R because
I'm using an laply() with a long list.
The process is very slow now, but I'm
using a very old machine with only 64k of
RAM. I want to buy a new machine but
I would like to calculate, at least as
an approximation, how long would
my process take for different RAM
configurations, so that I can take
a decision based on cost/speed information.
Could anyone tell me how I could estimate
the gain in CPU time for increasing RAM? I
understand that the key variable is the relative
size of the memory that has to be allocated vs.
the RAM: if all can be fit in RAM, then the process
will be very fast. Perhaps I should just calculate
the size of the memory that the process allocates?
Thanks
Agus
Dr. Agustin Lobo
Instituto de Ciencias de la Tierra (CSIC)
Lluis Sole Sabaris s/n
08028 Barcelona SPAIN
tel 34 93409 5410
fax 34 93411 0012
alobo at ija.csic.es
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