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Question Anybody knows most optimal icc flags for running on KNL? 

Forum: Multithreading
Date: 21 Jul, 2017
From: Mikhail <Mikhail>

I am trying to make some tests on KNL, building with icc 17.0 it seems to work, but what are the best optimization flags? I have already noticed that "-fimf-precision=low" gives:

G4VParticleChange::CheckSecondary : the Momentum direction is not u nit vector !! Difference: 1.74131e-09

printing out all the track parameters (despite verbosity set to 0).

It does not happen on Xeon with the same flags.

Do you know some magical set of flags for KNL to boost performance?

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1 Feedback: Re: Anybody knows most optimal icc flags for running on KNL?   (Andrea Dotti - 21 Jul, 2017)
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