[web2py] Memory error with numpy large array

[Kostas M]

I have an application which uses the function numpy.zeros to create a
very big array (~16500 x 16500) with the command:
data = numpy.zeros( (lgos,lgos), dtype=float)
This causes a MemoryError ticket in web2py. However when I run the
same function as a python module (outside web2py) it finishes without
any problem.
Any hints?
Are there any additional memory restrictions when modules run through
web2py that I should somehow consider?