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Using and Porting GNU Fortran

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14.6 Faster Programs

Aside from the usual gcc options, such as `-O', `-ffast-math', and so on, consider trying some of the following approaches to speed up your program (once you get it working).

14.6.1 Aligned Data  
14.6.2 Prefer Automatic Uninitialized Variables  
14.6.3 Avoid f2c Compatibility  
14.6.4 Use Submodel Options  


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