user manual
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Chapter 12
Figure 12-1
System Options dialog box
Maximum memory. Select to impose a limit in megabyt es on SPSS Modeler’s memory usage. On
some platforms, SPSS Mod eler limits its process size to reduce the toll on compu ters with limited
resources or heavy loads. If you are dealing with large amounts of data, this may cause an “out of
memory” error. You can ease memory load by specifying a new threshold.
Use system locale. This option is selected by default and s et to English (United States). Desele ct
to speci f y a nother language fr om the list of available languages and locales.
Managing Memory
In addition to the Maximum memory setting specified in the Sys tem Options dialog box, there are
several ways you can optimize memory usage:
Set up a cache on any nonterminal node so that the data is read from the cache rather than
retrieved from the data sou r ce when you run the data stream. This will help decrease the
memory load fo r large data sets. For more information, see the topic Caching Options for
Nodes in Chapter 5 on p. 50.
Adjust the Maximum members for nominal fields option in the stream properties dialog box.
This option specifies a maximum numbe r of members for nominal fields after which the
measurem ent level of the field bec omes Typeless. For more information, see the topic Setting
general options for streams in Chapter 5 on p. 55.
Force IBM® SPSS® Modeler to free up memory by clicking in the lower right corne r of
the window where the memory that SPSS Modeler is using and the amount allocated are
display ed (xxMB / xxMB). Clicking this region turns it a d arker shade, after which me mory
allocation figures will drop. Once the region returns to its regul ar color, SPSS Modeler has
freed up all the memory possible.
Setting Default Directories
You can specify the defaul t directory used for file bro wsers and output by selec ting Set Directory or
Set Server Directory from the File menu.
Set Directory. You can use this option to set the working directory. The default working
directory is based on the i nstallation path of your version of IBM® SPSS® Modeler or from
the command line path used to launch SPSS Mod eler. In local mode, the working directory