https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106565
--- Comment #8 from Steve Kargl <sgk at troutmask dot apl.washington.edu> --- On Tue, Aug 09, 2022 at 05:51:51PM +0000, sgk at troutmask dot apl.washington.edu wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106565 > > --- Comment #6 from Steve Kargl <sgk at troutmask dot apl.washington.edu> --- > On Tue, Aug 09, 2022 at 05:14:16PM +0000, quanhua.liu at noaa dot gov wrote: > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106565 > > > > --- Comment #4 from Quanhua Liu <quanhua.liu at noaa dot gov> --- > > Using > > gfortran -O3 -fexternal-blas -L/..... -lblas testmatrixCal.f90 > > Which BLAS are you using? If you are using BLAS from > Netlib, then of course you'll likely get poor results > as the Netlib BLAS is not tuned. > Even netlib blas is ok. gfcx -o z -O3 -march=native a.f90 -fexternal-blas -lblas -fdump-tree-optimized && ./z 1.41149306 1615.08020 1.50036991 1615.08020
