[petsc-users] Warning at the beginning of compiling

Edoardo alinovi edoardo.alinovi at gmail.com
Mon Mar 12 06:05:36 CDT 2018

Dear users,

what does this warning means?

 ***** WARNING: Using default FORTRAN optimization flags -g -O

                               You might consider manually setting
optimal optimization flags for your system with

FOPTFLAGS="optimization flags" see config/examples/arch-*-opt.py for

thank you very much,


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