Compiler flags for athlon processors

Compiler flags for athlon processors

We have a linux cluster with athlon processors. I am trying to compile the NASA overflow code and would like to get as
much optimization as possible. Are there any compiler flags to improve the performance of the code other than -O3.

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For more complete information about compiler optimizations, see our Optimization Notice.

There are exceptions, but for Athlons which have P-III compatibility, the P-III options should work well (/QxK). You would need to profile, to determine where /O3 might be faster than /O2.

Sorry, the linux forum title was off my screen. The linux version of that option is -xK. A minute spent reading 'info ifc' or 'ifc -help' would be a valuable investment.

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