[petsc-users] One question on configuring / compiling PETSc

[Jacob Faibussowitsch]

You may also want to specify -mtune=<cpu-type>. It is usually redundant (-march implies -mtune), but depending on how old your compiler is/how new your hardware is your compiler may not properly classify your hardware and still tune for “generic”.

Best regards,

Jacob Faibussowitsch
(Jacob Fai - booss - oh - vitch)

> On Mar 17, 2022, at 13:37, Jed Brown <jed at jedbrown.org> wrote:
> 
> -march=native, which is also recognized by the new Intel compilers (icx), which are based on LLVM.
> 
> Ernesto Prudencio via petsc-users <petsc-users at mcs.anl.gov> writes:
> 
>> Hi all.
>> 
>> When compiling PETSc with INTEL compilers, we have been using the options "-Ofast -xHost". Is there an equivalent to -xHost for GNU compilers?
>> 
>> Thank you in advance,
>> 
>> Ernesto.
>> 
>> 
>> Schlumberger-Private