We have four clusters composed of nodes of different vintage Intel Xeon processors.
Intel(R) xeon(R) CPU E5-2697
Intel(R) Xeon(R) E5-2690
Intel(R) Xeon(R) x5675
Intel(R) Xeon(R) e5530
We are using 16U3 versions of the Intel ifort compiler.
Are there compilation optimization parameters I should use, looking for ultimate performance, that would produce an executable best for each machine?
Or is there one set of optimization parameters that should just as good an executable that I could compile on any machine and execute on another (or all) machines? Again, we are looking for ultimate performance as opposed to portability as a prime concern.
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