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Re: st: Stata extremely slow on bsqreg and sqreg command


From   Stas Kolenikov <skolenik@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Stata extremely slow on bsqreg and sqreg command
Date   Sun, 5 Aug 2012 12:15:54 -0500

Dear fellow landscapers,

I need fine sand to plant a few flowers. I put a few 5 cm rocks into
my kitchen blender and started it on high grate. The blender seems to
buzz and vibrate, but I don't see any sand coming out of it, just
smoke.

I bet your model is still around replication number 10 or so. One way
to try to gauge how much time you need on your full data set is to
figure out how the problem scales. Run it with 100, 200, 500 and 1000
observations by 100, 200 and 400 replications (-set rmsg on- or use
-timer-); fit a power model log( time ) = a + b log( sample size) + c(
number of bootstrap replicates), and -predict- how things will look
like for 100,000 observations. I did something of that kind timing my
-confa- package in
http://stata-journal.com/article.html?article=st0169 (may be that's
something that the authors of computationally intensive packages
should do). When people ask me about -confa- and show me their syntax
with 50+ variables, I just [ palm face ] it.

PS. I have MP4 -glamm- running for the 6th day doing multiple
imputations on a model with two latent factors and a data set with 400
observations. And another -glamm- problem with 350,000 observations
running for the 12th day. Sometimes, you have to be patient.

On Sun, Aug 5, 2012 at 3:47 AM, Abekah Nkrumah <ankrumah@gmail.com> wrote:
> Dear Statalist,
>
> I will appreciate your help on this. I am running the sqreg and bsqreg
> command with 400 replications. I executed the command around 23:30 hrs
> Saturday and it is now 09:43 hrs Sunday and the command is still
> running. Please note: I have 160,000 observations (of course some of
> the observations will drop due to differences in observations per
> variable). I am using  Stata SE version 11 running on a Macbook Pro
> with 2.26 GHZ Intel core 2 duo and memory 2GB
>
> Is there anything I can do to get the command to run faster


-- 
---- Stas Kolenikov
-- http://stas.kolenikov.name
---- Senior Survey Statistician, Abt SRBI
-- Opinions stated in this email are mine only, and do not reflect the
position of my employer
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