Help me !!! No more memory available...WHY ???



Making a complex calculation with Mathematica
the program jams for lack of memory. Now neglecting the nature of the
calculation I wonder me because this happens. Mathematica says to use
the whole available virtual memory
My computer has 1 GB of Ram, Processor AMD 3400+ , Win XP 32 Bit.
I have tried to plan the virtual memory to a superior value to 4 GBs
hoping to resolve the problem. Looking however at the virtual memory
during the calculation is seen that at the most 2,3 GBs are used only.

I have tried then to realize the calculation installing Win XP 64 Bit
with file system Ntfs + Mathematica 5.2 (64 Bit)4 GB RAM, but the
problem is not resolved
The aforesaid calculation should not ask for considering the sum of
the data and the code more than 3 GBs
I have tried to instruct me on the problem but anywhere it is said
that with the 64 bit (operating system and application) I had to
resolve the problem..So it has not been !!!
I think that increasing the RAM I could resolve but I don't understand
the nature of the problem. How is the memory managed? As it is
possible to esteem previously if my hardaware+software allows the
calculation that I want to perform?

Thanks in advance

Rob
.

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