To clarify: in my test gfortran ran 1.3 slower than ifort. / Regards John Rundgren
________________________________________ From: Wien <[email protected]> on behalf of Peter Blaha <[email protected]> Sent: Tuesday, December 6, 2016 12:20 PM To: A Mailing list for WIEN2k users Subject: Re: [Wien] WIEN2k and gfortran Thank you very much for the information. I have not used gfortran for long time. Just on question: I did not fully understand the last sentence: > In a test taking 2.5 h/iteration gfortran/ifort time was 1.3. A current > test got interesting when one of my disks containing ifort crashed. Does it say with gfortran/OpenBlas it takes 2.5h, with ifort/mkl 1.3h ? Or does it mean that the ratio of the two timings is 1.3, i,.e. gfortran runs 1.3 times slower than ifort ? Regards On 12/05/2016 11:54 AM, John Rundgren wrote: > Dear WIEN2k team, > > siteconfig and User's Guide can be updated concerning gfortran and BLAS: > > L Linker Flags: $(FOPT) -I /opt/OpenBLAS/include > -L/opt/OpenBLAS/lib > R R_LIB (LAPACK+BLAS): -lopenblas -lpthread -lgfortran > > OpenBLAS being available from the sites > > www.openblas.net and > https://github.com/xianyi/OpenBLAS/wiki/Installation-Guide > > In a test taking 2.5 h/iteration gfortran/ifort time was 1.3. A current > test got interesting when one of my disks containing ifort crashed. > > Regards, > John Rundgren > > > > > _______________________________________________ > Wien mailing list > [email protected] > http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien > SEARCH the MAILING-LIST at: > http://www.mail-archive.com/[email protected]/index.html > -- P.Blaha -------------------------------------------------------------------------- Peter BLAHA, Inst.f. Materials Chemistry, TU Vienna, A-1060 Vienna Phone: +43-1-58801-165300 FAX: +43-1-58801-165982 Email: [email protected] WIEN2k: http://www.wien2k.at WWW: http://www.imc.tuwien.ac.at/TC_Blaha -------------------------------------------------------------------------- _______________________________________________ Wien mailing list [email protected] http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/[email protected]/index.html _______________________________________________ Wien mailing list [email protected] http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/[email protected]/index.html
