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Re: Re: PSPP not working

From: John Darrington
Subject: Re: Re: PSPP not working
Date: Mon, 26 Sep 2016 13:03:56 +0200
User-agent: Mutt/1.5.23 (2014-03-12)

A screenshot is probably not going to help.

What would be more interesting would be to know exactly what analysis
you are running.    I think you said that you were running a FREQUENCIES
analysis on one variable.


* How many cases in this dataset (approx) ?
* How many distinct values does that variable have (approx) ?

If for example you have a million cases, and this variable is a scalar
variable, then it'll have close to a million distinct values.  In which 
case it would not be a sensible analysis to run and I can indeed imagine
that it would take a lot of memory and time.

On the other hand, if the variable has only a small number of distinct
values and if the dataset is small, then perhaps you have a diffiernt problem.


On Mon, Sep 26, 2016 at 02:07:33PM +0530, Cecily Ray wrote:
     Dear Alan, Ann and Harry,
     Many thanks for your inputs on my issues of slow PSPP.
     I have used the Task Manager as suggested by Alan and
     found that often there is an alternation between PSPP
     and System Idle Manager using a high percentage of memory.
     This happens when PSPP is saying (Not Responding)
     My laptop has 4 GB of memory in two main memory slots, according
     to the product specification sheet.
     If I can get a chance later I will send a screenshot.
     Cecily Ray
     On Sat, Sep 24, 2016 at 7:47 PM, Harry Thijssen <address@hidden>
     > Hi Cecily
     > I don't think PSPP is to slow with big datasets. 500 Mb is not that big. 
     > just think you are not working with an optimal configuration.
     > The tests Alan suggested would have given more info about the problem so
     > people could give you an advice. May guess at the moment is that you 
     > use  a bigger workspace or have a problem with your tmp files on a slow
     > disk. The later is unlikely as I expect just 1 disk in your laptop.
     > Assuming you have a laptop with at least 4 Gb memory I would recommend
     > setting your workspace to 500 Mb or more. You can do this in the
     > syntaxeditor window with:
     > set WORKSPACE=524288.
     > You can check this with:
     > show ALL.
     > You find the syntax editor by going in PSPPIRE to the file tab and then
     > syntax.
     > If you could tell the exact file you downloaded for your work people 
     > try to find out what is going on and help you.  It would also be usefull 
     > you could post what happens if you change your workspace settings as
     > suggested above.
     > Have fun
     > <> Date: Sat, 24 Sep
     >> 2016 00:08:10 +0530
     >> From: Cecily Ray <address@hidden>
     >> To: Alan Mead <address@hidden>
     >> Cc: "address@hidden" <address@hidden>
     >> Subject: Re: PSPP not working
     >> Message-ID:
     >>         <address@hidden
     >> Content-Type: text/plain; charset="utf-8"
     >> Alan,
     >> Thank you for your helpful replies. I now understand that PSPP works 
     >> with smaller datasets than with the large one I am using. I think I will
     >> have
     >> to go for a trial version of SPSS.
     >> Cecily

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