![]() You may first start to look for ways of increasing the stack-size of your program, but you will soon discover that the problem is more profound: a 32-bit program cannot access address spacing beyond 4Gb. When we installed a fortran compiler and the code::blocks IDE, the default fortran compiler generated 32-bit programs. This generally is not an issue, unless you need a large amount of memory, for example to store a temporary array with 400 3 double precision coordinates (as I did for a project I’m currently working on). On such systems, 32-bit programs will run fine, but 64-bit programs can make more efficient use of the underlying system. ![]() Current day computers generally have 64-bit processors, and most even have 64-bit operating systems.
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