I have an early 2012 Macbook Pro with and Intel i7 processor and 16 gigs RAM running Windows 7 Professional 64-bit via Bootcamp. I work in Geographical Information Systems (GIS) as a programmer, so most of the applications I am running are 32-bit Applications, but tend to use a lot of resources (i.e. ArcGIS, SQL Server Express, Visual Studio, etc.).
I have been noticing that when I have multiple instances of either the same 32-bit application or different 32-bit applications and they are all working on hefty processing tasks, I am still only topping out at about 30% memory use.
I understand 32-bit applications are limited to less than 4gb RAM, but I assumed that one instance could use its own 4gb while another instance could use another 4gb to take full advantage of all the memory I have installed.
Can anyone explain how this works and how I can get my applications to take advantage of all my memory via running multiple instances?
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