Hi Bart, Thanks for the information. I'll try 'precise'. However, the developer of the program I need to compile (Siesta) explicitly says that '-no-ftz' should be used, so it certainly would be handy to be able to set that option.
Cheers, Loris Bart Oldeman <[email protected]> writes: > Hello Loris, > > unfortunately it's not so straightforward to easily override a few flags to > my knowledge (maybe somebody else knows?) > > but you can try > toolchainopts = {'usempi': True, 'precise': True} > which sets -fp-model precise, which may be what you want anyway if you care > about denormals. > > you can also use 'strict': True instead if you want even more FP safety. > > Cheers, > Bart > > On Tue, 19 Nov 2019 at 08:03, Loris Bennett <[email protected]> > wrote: > > Hi, > > I want to use the Intel compiler option '-no-ftz' and have set > > toolchainopts = {'usempi': True, 'optarch': 'm64 -xHost -prec-div > -prec-sqrt -qopt-prefetch -no-ftz'} > > However, in the log I see > > CFLAGS set to -O2 -m64 -xHost -prec-div -prec-sqrt -qopt-prefetch -no-ftz > -ftz -fp-speculation=safe -fp-model source > > Is this correct? Will the earlier option really win? My expectation > would be that the later option would take precedence? > > Cheers, > > Loris > > -- > Dr. Loris Bennett (Mr.) > ZEDAT, Freie Universität Berlin Email [email protected] -- Dr. Loris Bennett (Mr.) ZEDAT, Freie Universität Berlin Email [email protected]
