Regarding compiler options to maximize speed I may tweetcomment that -fast also turns on -xHost, and is best used when compiling
The ifort -fast and gfortran -O3 -march=native options can be used to increase speed. Gfortran -Ofast turns on -ffast-math and can give a
further 2x speedup in some cases, but it can also give incorrect
results and should be used with care. Use gfortran -Og to debug.
That is 274 characters. If there is something wrong, please let me know.By itself this is mostly OK, but for the ifort users I'll probably add a
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