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The full-package of IE3D is certainly running on Windows 32. The addressing capability of 32-bit computing is limited. A 32-bit OS can only access maximum 4 GB of RAM. Among the 4 GB, 2 GB addressing is for the program and the other 2 GB addressing is for the data on Windows 32. The maximum amount of memory allocated for the users for all running programs including the OS is 2 GB. When you are running a large IE3D simulation, you are suggested to close as many applications on your computer as possible to free some available data to IE3D. Even you may have 2 GB or more RAM installed, IE3D may not be able to grant so much memory when its requirement is getting close to 2 GB. It may fail at about 1.5 GB, 1.2 GB or even lower. Whether the memory is available is not controlled by IE3D but by the OS. When such thing happen, it may issue an error message "dynamic memory allocation failed!" or similar or even crash IE3D.
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