As mentioned in ET Call on 09/02/22.

I am compiling a subset of the latest release of the Einstein Toolkit with one of latest version available of Intel oneAPI (2021.5). I am attaching thornlist and optionfile.

I see warnings like this:

/home/sbozzolo/storage/codes/einstein_toolkit/Cactus/configs/sim/build/ML_BSSN/ML_BSSN_EvolutionInteriorSplitBy2.cc(49): warning #16219: Some OpenMP processing was skipped to constrain compile time. Consider overriding limits (-qoverride-limits).

which essentially informs me that the compiler cannot optimize the code within a time frame that is heuristically determined.

As a result, compilation takes a very long time (several tens of minutes). I have seen this on other supercomputers with compilers from 2019.

‌

(I don’t seem able to attach two files, so I am attaching only the option list. )

attachment:

generic-intel.cfg

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2595/modern-intel-compilers-struggle-to-compile