Recommended Compiler Options for OpenFOAM on a HPC
I was wondering if anyone can suggest the compiler options to use with OpenFOAM-2.1.1 to squeeze out the maximum performance on a HPC. The HPC has Intel Xeon CPU E5-2670.
I initially compiled OF with:
My initial tests showed the one compiled with gcc was slightly faster when using the MotorBike Tute with simpleFoam.
Anyone have anything to share with regards to compiler performance with -O2/-O3 with gcc and/or intel or any other options (eg AVX)?
You can find some additional pointers on the comments and blog post here:
OpenFOAM with ICC - Intel's ICC is "allergic" to AMD CPUs
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