The upper limit is determined by the amount of memory available and the
limitations of the 32-bit address space (about 250 million matrix
elements taking about 2 Gigabytes of memory).
Usually the available memory is the active constraint. This can be
increased by installing more memory, or increasing the size of virtual
memory (this is used automatically when physical memory runs out). Note,
however, that using virtual memory is very, very slow. Under Windows you
can see in the taskmanager how much memory is being used, but virtual
memory usage you can often just hear from the sudden increase in
harddisk activity.
Jurgen.
Matthieu Bunel wrote:
> Hi,
>
> I would like to know what the upper limit size of matrix in Ox ?
> and if it is possible to modify this threshod ?
> Thank you in advance
>
> Mat
>
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oxoxoxox 2nd OxMetrics user conference 26-27 August 2004
oxoxoxox Cass Business School, London
oxoxoxox www.cass.city.ac.uk/conferences/oxmetrics2004/
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Dr Jurgen A Doornik
Nuffield College, Oxford OX1 1NF, UK
tel. UK: +44-1865-278610 fax +44-1865-278621
http://www.nuff.ox.ac.uk/Users/Doornik/
http://www.oxmetrics.net
http://www.oxedit.com
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