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st: Re: linux stata slower than windows stata - why?

From   "Michael Blasnik" <[email protected]>
To   <[email protected]>
Subject   st: Re: linux stata slower than windows stata - why?
Date   Tue, 19 Jul 2005 09:43:40 -0400

There are probabaly tweks you can use to improve things in your Linux set-up, but I'd have to say that I'm only mildly suprised by your speed findings. Applications need to be designed specifically to take advantage of dual processors, and Stata is not. In single threaded tasks, dual processors tend to perform slightly slower than single processors. My surprise is that the move to 64bit doesn't appear to offset that speed penalty. Also, the additional RAM doesn't make things any faster if the dataset fits in ram on both machines.

Michael Blasnik
[email protected]

----- Original Message ----- From: "Joe West" <[email protected]>
To: <[email protected]>
Sent: Tuesday, July 19, 2005 4:13 AM
Subject: st: linux stata slower than windows stata - why?


I have just started using my new Linux machine which has a Dual AMD Opteron (2.2 GHz) with Serial ATA system with a 64-bit linux platform. I have 16GB of RAM installed. I am using stata 9. This has solved my problem of opening large files however on running identical do files on a 32-bit windows pc (which is able to address the 1.5GB of RAM) with stata 8 the linux machine runs the do file slower. For example 19 mins (linux machine) 12 mins (windows machine).

Is this expected? If not are there some tweaks I should be tweaking to improve the speed of my linux machine.



Dr Joe West
Specialist Registrar in Gastroenterology
Division of Epidemiology and Public Health
University of Nottingham, Medical School
Direct Line +44 (0)115 9709329
QMC extension 41329
Fax +44 (0)115 9709316
Bleep @ Nottingham City Hospital 80 7483
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