Re: st: Re: The speed of the MFX command and Stata 9

[Thomas Corneli�en <cornelissen@mbox.iqw.uni-hannover.de>]

Friedrich,
my initial experience with -mfx- taking more than 39 hours after a -herprob- 
estimation was based on a model with 44 regressors and 87 000 observations, 
CPU speed 1,92 Ghz, and the following version of Stata 8:

. update query
Stata executable
   folder:               D:\Programme\Stata8\
   name of file:         wstata.exe
   currently installed:  23 Jan 2003
   latest available:     10 Jan 2005

Indeed, it does not look very updated. I am about to update it and I'll run 
the model again afterwards to see if there is a difference.
Thomas



---------  Friedrich H�bler wrote:

> I would like to hear more about your experience with -mfx-. When you
> say that the large model had not finished after 39 hours, are you
> talking about Stata 8.0 or Stata 8.2 with all the latest updates? I
> recall that the speed of -mfx- was increased significantly after the
> initial release of Stata 8.
--- Thomas Corneli�en wrote:
> I have made the experience that -mfx- has been considerably speeded
> up in Stata 9.
> My experience relies on -mfx- after the heteroscedastic probit
> model -hetprob-. For example, in one model Stata 8 took 3:24 hours
> for -mfx
> compute- after -hetprob-, while Stata 9 took 1 minute 24 seconds. A
> larger
> model hadn't finished after 39 hours in Stata 8, but it took only
> 10 minutes in Stata 9. 
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