[QE-users] QE 6.4 - slower with intel fftw? how to properly benchmark

[Paolo Giannozzi]

On Fri, Mar 1, 2019 at 11:14 AM Christoph Wolf <wolf.christoph at qns.science>
wrote:


> When compiling qe-6.4
>

well, not yet: qe-6.4-rc, standing for "release candidate"

I am not experienced with benchmarking so if my benchmark is garbage
>

it's not any more garbage than the average benchmark. I stopped trusting
benchmarks many years ago, when I got a 10% speed difference by adding or
removing a print (a single one in an entire run, I mean; XLF on a IBM
RS320H).

Paolo
-- 
Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
Phone +39-0432-558216, fax +39-0432-558222
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