> On Mon, 8 Sep 2008 00:29:40 -0700 (PDT), Fatemeh gmail.com>
> wrote in <23de88ca-360d-44d2-b1f2-da24b9216...@z66g2000hsc.googlegroups.com>:
>
>
>

>> I've written a code in fortran90. Since my sample is large, my code
>> runs slowly.
>> I need some flags in order to enter them to Makefile which can be able
>> to run the code with higher speed.
>> -----------------------------------------------------------------
>> this is my Makefile:
>> ----------------------------------
>> FC=ifort
>> NROBJS=nr.o nrtype.o parametros.o
>> MYOBJS= wfinside.o gauntutils.o leedutils.o
>> MYSUBFUN=DoubleFactorialDP.o FactorialDP.o Gaunt.o Legendre.o
>> SphericalHarmonicYZ.o SqrtFactorialDP.o ThreeJSymbol.o factorial.f90
>> bessel.o writefile.o intgral.o ComlexUnit.o
>> .SUFFIXES:
>> .SUFFIXES: .f90 .o

>

>> all: $(NROBJS) $(MYOBJS) $(MYSUBFUN) main-goodformat2.o
>> $(FC) $(NROBJS) $(MYOBJS) $(MYSUBFUN) main-goodformat2.o -o
>> wannier.exe

>

>> .f90.o:
>> $(FC) -c $<

>

>> nr.o: nr.f90 nrtype.o
>> nrtype.o: nrtype.f90

>
> ...
>

>> Would you please guide me if there is any flag for this purpose?
>> (I cannot write my code in Parallel. so I should find some flags!!!)
>> I'm anxiously looking forward your reply and guidelines.

>
> You don't appear to be using any optimisation. Try adding -O3 to
> your .f90.o: line. Type in 'ifort --help' to get a listing of some flags you
> can try. There's also a chance you can get better interprocedural optimisation
> by combining some of your source files together.
>
> --
> Ivan Reid, School of Engineering & Design, _____________ CMS Collaboration,
> Brunel University. Ivan.Reid@[brunel.ac.uk|cern.ch] Room 40-1-B12, CERN
> KotPT -- "for stupidity above and beyond the call of duty".