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Re: st: on 32/64-bit OS, CPU and Stata

From   [email protected] (Alan Riley)
To   [email protected]
Subject   Re: st: on 32/64-bit OS, CPU and Stata
Date   Thu, 28 Jul 2005 12:14:15 -0500

I have one more comment to make on the speed of a 32-bit version of
Stata running on a 64-bit box vs. a 64-bit version of Stata running
on that same box.

I just did a quick 'silly' speed comparison.  I generated two
variables containing 500,000 uniformly-distributed random numbers
each.  I then sorted each variable.  Finally I performed a linear
regression of one variable against the other.  I ran each
commands multiple times and took an average timing.

This was done on a box running 64-bit Windows with a 1.4 GHz
AMD Opteron 240 processor and 1 GB of RAM.

The timings for 32-bit Stata on this box were

    sort:  2.00 seconds
 regress:   .88 seconds

The timings for 64-bit Stata were

    sort:  1.65 seconds
 regress:   .80 seconds

These timings are just a quick example which backs up what we have
already observed in our testing of Stata on various platforms.  The
64-bit version of Stata outperforms the 32-bit version of Stata on a
64-bit box.  Users wishing to push the edge of both speed and memory
are served very well with the current crop of 64-bit machines
available to them running a 64-bit version of Stata.

([email protected])
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