[petsc-users] Building with MKL 10.3

[Preston, Eric - IS]

As the original poster, I can say I didn't give much thought to using the threaded vs. non-threaded MKL libraries, I was just sharing a solution to building with a different MKL variant (which should probably be incorporated into the config scripts.) However, the discussion it spawned was informative.  The main consideration there was not performance but compatibility with your other libraries. I know on windows, for instance, different run-time libraries are used in each case and all your components must be compiled with the same option. Thankfully, I'm not using windows for this project, so it might not make any difference.

Eric Preston


> Hello,
>    I am neither a regular Petsc user nor contributor so preemptive
>apologies if I am completely off the line here.
>
>I am not sure if the original poster had hyper-threading in mind when he
>asked about multi-threading, in case that was the idea, I don't think using
>petsc with MKL (HT) is going to give any benefit, I don't think MKL is
>really resource insensitive.
>
>Also I wonder what percentage of the code is actually blas/lapack intensive
>to make any significant dent in wall cock?
>
>of course +1 to everything else posed above.
>
>Cheers,
>
>C.S.N


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